Netgear FVS336G Reference Guide

Download

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

NETGEAR, Inc.

350 East Plumeria Drive San Jose, CA 95134

202-10257-05 v1.0 January 2010

Technical Support

Please refer to the support information card that shipped with your product. By registering your product at

http://www.netgear.com/register, we can provide you with faster expert technical support and timely notices of

product and software upgrades. NETGEAR, INC. Support Information Phone: 1-888-NETGEAR, for US & Canada only. For other countries, see your Support information card. E-mail: support@netgear.com

North American NETGEAR website:

http://www.netgear.com

Trademarks

NETGEAR and the NETGEAR logo are registered trademarks and ProSafe is a trademark of NETGEAR, Inc. Microsoft, Windows, and Windows NT ar e registered trademarks of Microsoft Corporation. Other brand and product names are registered trademarks or trademarks of their respective holders.

Statement of Conditions

In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes to the products described in this document without notice.

NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit layout(s) described herein.

Federal Communications Commission (FCC) Compliance Notice: Radio Frequency Notice

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruct ions, may cause harmf ul interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

EU Regulatory Compliance Statement

The ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN is compliant with the following EU Council Directives: 89/336/EEC and LVD 73/23/EEC. Compliance is verified by testing to the following standards: EN55022 Class B, EN55024 and EN60950-1.

v1.0, January 2010

Bestätigung des Herstellers/Importeurs

Es wird hiermit bestätigt, daß das ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN gemäß der im BMPTAmtsblVfg 243/1991 und Vfg 46/1992 aufgeführten Bestimmungen entstört ist. Das vorschriftsmäßige Betreiben einiger Geräte (z.B. Testsender) kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die Anmerkungen in der Betriebsanleitung.

Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.

Certificate of the Manufacturer/Importer

It is hereby certified that the ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN has been suppressed in accordance with the conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example, test transmitters) in accordance with the regulations may, howe v er, be subject to certain restrictions. Please refer to the notes in the operating instructions.

Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and has been granted the right to test the series for compliance with the regulations.

Voluntary Control Council for Interference (VCCI) Statement

This equipment is in the second category (information equipment to be used in a residential area or an adjacent area thereto) and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas.

When used near a radio or TV receiver , it may become the cause of radio interference. Read instructions for correct handling.

Additional Copyrights

1. Redistributions of source code must retain the above copyright notice, this list of conditions, and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions, and the following disclaimer in the documentation and/or other materials provided with the distribution.

3. The copyright holder’s name must not be used to endorse or promote any products derived from this software without his specific prior written permission.

This software is provided “as is” with no express or implied warranties of correctness or fitness for purpose.

v1.0, January 2010

iii

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions, and the following disclaimer.

3. All advertising materials mentioning features or use of this software must display the following acknowledgment: “This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit (

4. The names “OpenSSL Toolkit” and “OpenSSL Project” must not be used to endorse or promote products derived from this software without prior written permission. For written permission, contact openssl-core@openssl.org.

5. Products derived from this software may not be called “OpenSSL” nor may “OpenSSL” appear in their names without prior written permission of the OpenSSL Project.

6. Redistributions of any form whatsoever must retain the following acknowledgment: “This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit (

THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT “AS IS,” AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. This product includes cryptographic software written by Eric Young (eay@cryptsoft.com). This product includes software written by Tim Hudson (tjh@cryptsoft.com).

License to copy and use this software is granted provided that it is identified as the “RSA Data Security, Inc. MD5 Message-Digest Algorithm” in all material mentioning or referencing this software or this function. License is also granted to make and use derivative works provided that such works are identified as “derived from the RSA Data Security, Inc. MD5 MessageDigest Algorithm” in all material mentioning or referencing the derived work. RSA Data Security, Inc. makes no representations concerning either the merchantability of this software or the suitability of this software for any particular purpose. It is provided “as is” without express or implied warranty of any kind. These notices must be retained in any copies of any part of this documentation and/or software.

http://www.openssl.org/).”

v1.0, January 2010

Redistribution and use in source and binary forms are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation, advertising materials, and other materials related to such distribution and use acknowledge that the software was developed by Carnegie Mellon University. The name of the University may not be used to endor se or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED “AS IS” AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Zlib zlib.h -- interface of the 'zlib' general purpose compression library version 1.1.4, March 11th,

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

Jean-loup Gailly: jloup@gzip.org; Mark Adler: madler@alu mni.caltech.edu The data format used by the zlib library is described by RFCs (Request for Comments) 1950 to 1952 in the files ftp://ds.internic.net/rfc/rfc1950.txt and rfc1952.txt (gzip format)

(zlib format), rfc1951.txt (deflate format)

Product and Publication Details

Model Number: FVS336G Publication Date: January 2010 Product Family: VPN Firewall Product Name: ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN Home or Business Product: Business Language: English Publication Part Number: 202-10257-05 Publication Version Number 1.0

v1.0, January 2010

ProSafe Dual WA N Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

About This Manual

Conventions, Formats, and Scope .................................................................................. xv

How to Print This Manual ................................................................................................xvi

Revision History ..................... ... ....................................... ... ... .... ... ... ................................xvi

Chapter 1 Introduction

Key Features ..................................................................................................................1-1

Dual WAN Ports for Increased Reliability or Outbound Load Balancing ..................1-2

Advanced VPN Support for Both IPsec and SSL .....................................................1-2

A Powerful, True Firewall with Content Filtering ......................................................1-3

Autosensing Ethernet Connections with Auto Uplink ...............................................1-3

Extensive Protocol Support ......................................................................................1-4

Easy Installation and Management ................................................................................1-4

Maintenance and Support ............................... ... ....................................... ... ... ... .... ........1-5

Package Contents ..........................................................................................................1-5

Front Panel Features ......................................................................................................1-6

Rear Panel Features ......................................................................................................1-7

Default IP Address, Login Name, and Password Location ........................... .................. 1-8

Qualified Web Browsers .................................................................................................1-8

Chapter 2 Connecting the FVS336G to the Internet

Understanding the Connection Steps .............................................................................2-1

Logging into the VPN Firewall .................. .... ... ... ... ... .... ... ....................................... ... ... ..2-2

Navigating the Menus .....................................................................................................2-4

Configuring the Internet Connections ........................................................... ..................2-4

Automatically Detecting and Connecting ............................ ... ... ... .... ... ... ... ...............2-5

Manually Configuring the Internet Connection ... .... ... ... ....................................... ... ..2-7

v1.0, January 2010

vii

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Configuring the WAN Mode (Required for Dual WAN) .... ....................................... ... ...2-11

Network Address Translation .................................................................................2-12

Classical Routing ...................................................................................................2-12

Configuring Auto-Rollover Mode ............................................................................2-13

Configuring Load Balancing ...................................................................................2-14

Configuring Dynamic DNS (Optional) ...........................................................................2-16

Configuring the Advanced WAN Options (Optional) ............................................... ...... 2-18

Additional WAN Related Configuration ..................................................................2-20

Chapter 3 LAN Configuration

Choosing the VPN Firewall DHCP Options ....................................................................3-1

Configuring the LAN Setup Options ...............................................................................3-2

Managing Groups and Hosts (LAN Groups) ...................................................................3-6

Viewing the LAN Groups Database .........................................................................3-7

Adding Devices to the LAN Groups Database ......................................................... 3-8

Changing Group Names in the LAN Groups Database ...........................................3-8

Configuring DHCP Address Reservation .................................................................3-9

Configuring Multi Home LAN IP Addresses ..................................................................3-10

Configuring Static Routes .............................................................................................3-11

Configuring Routing Information Protocol (RIP) ................. ... .... ... ... ... .... ... ... ... ... .... ... ...3-13

Chapter 4 Firewall Protection and Content Filtering

About Firewall Protection and Content Filtering .............................................................4-1

Using Rules to Block or Allow Specific Kinds of Traffic ..................................................4-2

About Services-Based Rules ...................................................................................4-3

Viewing the Rules ....................................................................................................4-8

Order of Precedence for Rules ................................................................................4-8

Setting the Default Outbound Policy ............................... .... ... ... ....... ... ... ... ... .... ... ... ..4-8

Creating a LAN WAN Outbound Services Rule .......................................................4-9

Creating a LAN WAN Inbound Services Rule ........................................................4-10

Modifying Rules ......................................................................................................4-11

Inbound Rules Examples .......................................................................................4-11

Outbound Rules Example ............................... ... .... ... ... ....................................... ...4-14

Configuring Other Firewall Features .............................................................................4-15

Attack Checks ....................... .... ... ... ....................................... ... ... .... ... ...................4-15

viii

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Configuring Session Limits .....................................................................................4-17

Managing the Application Level Gateway for SIP Sessions ..................................4-18

Creating Services, QoS Profiles, and Bandwidth Profiles ............................................4-19

Adding Customized Services .................................................................................4-19

Setting Quality of Service (QoS) Priorities ............................................................. 4-21

Creating Bandwidth Profiles ...... ... ... ... ....................................................................4-22

Setting a Schedule to Block or Allow Specific Traffic ................................. ... ... ... .... ... ...4-24

Blocking Internet Sites (Content Filtering) ....................................................................4-25

Configuring Source MAC Filtering ................................................................................4-28

Configuring IP/MAC Address Binding ...........................................................................4-30

Configuring Port Triggering ...........................................................................................4-31

E-Mail Notifications of Event Logs and Alerts ......................................... ......................4-33

Administrator Tips .........................................................................................................4-33

Chapter 5 Virtual Private Networking Using IPsec

Considerations for Dual WAN Port Systems ..................................................................5-1

Using the VPN Wizard for Client and Gateway Configurations ...................................... 5-3

Creating Gateway to Gateway VPN Tunnels with the Wizard .................................5-3

Creating a Client to Gateway VPN Tunnel ...............................................................5-6

Testing the Connections and Viewing Status Information ............................................. 5-12

NETGEAR VPN Client Status and Log Information ............................................... 5-12

VPN Firewall VPN Connection Status and Logs .... ... ... ... .... ... ...... .... ... ... ... ... .... ... ...5-14

Managing VPN Policies .. .... ... ... ... ....................................... ... .... ... ... .............................5-15

Configuring IKE Policies ............................... ....................................... ... ... ... .... ... ...5-16

Configuring VPN Policies .......................................................................................5-18

Configuring Extended Authentication (XAUTH) ............................................................5-19

Configuring XAUTH for VPN Clients ......................................................................5-20

User Database Configuration .... ... ... ....................................... ... ... .... ... ...................5-22

RADIUS Client Configuration .................................................................................5-22

Assigning IP Addresses to Remote Users (ModeConfig) .............................................5-24

Mode Config Operation ... ... ... .... ... ... ... .... ...................................... .... ... ... ... .............5-24

Configuring Mode Config Operation on the VPN Firewall ......................................5-25

Configuring the ProSafe VPN Client for ModeConfig ....................................... ......5-30

Configuring Keepalives and Dead Peer Detection .......................................................5-32

Configuring Keepalives ..........................................................................................5-32

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Configuring Dead Peer Detection ..........................................................................5-33

Configuring NetBIOS Bridging with VPN ......................................................................5-34

Chapter 6 Virtual Private Networking Using SSL

Understanding the Portal Options ...................................................................................6-1

Planning for SSL VPN ....................................................................................................6-2

Creating the Portal Layout ..............................................................................................6-3

Configuring Domains, Groups, and Users ......................................................................6-7

Configuring Applications for Port Forwarding ............................................ .....................6-7

Adding Servers ................................... ....................................... ... .... ... ... ..................6-8

Adding A New Host Name . ... .... ... ... ... .... ...................................... .... ... ... ... ...............6-9

Configuring the SSL VPN Client ...................................................................................6-10

Configuring the Client IP Address Range . ...... ... .... ... ... ... .... ... ... ... .... ... ... ... ... .... ......6-11

Adding Routes for VPN Tunnel Clients ........ ... ... .... ... ... ... .... ... ... ... ....... ... ... ... .... ... ...6-12

Replacing and Deleting Client Routes ...................................................................6-12

Using Network Resource Objects to Simplify Policies ..................................................6-13

Adding New Network Resources ..........................................................................6-13

Configuring User, Group, and Global Policies ..............................................................6-15

Viewing SSL VPN Policies .....................................................................................6-16

Adding an SSL VPN Policy ....................................................................................6-17

Chapter 7 Managing Users, Authentication, and Certificates

Adding Authentication Domains, Groups, and Users .....................................................7-1

Creating a Domain ............................. .... ... ... ... ....................................... ... ... .... ... ... ..7-1

Creating a Group .................................... ...................................... .... ... ... ... ...............7-5

Creating a New User Account ... ... ... ....................................... ... ... .... ... ... ..................7-6

Setting User Login Policies ............................. ... .... ... ....................................... ... ... ..7-7

Changing Passwords and Other User Settings ......................... ....... ...... ...... ....... .....7-9

Managing Certificates ...................... ... ... ... .... ... ....................................... ... ... ... ... .... ......7-11

Viewing and Loading CA Certificates .....................................................................7-12

Viewing Active Self Certificates ..............................................................................7-13

Obtaining a Self Certificate from a Certificate Authority ...................... ... ... ... .... ... ...7-14

Managing your Certificate Revocation List (CRL) .. ... ... ..........................................7-17

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Chapter 8 VPN Firewall and Network Management

Performance Management ....................................... .... ... ... ... ....................................... ..8-1

Bandwidth Capacity .................................................................. ... .... ... ... ..................8-1

Features That Reduce Traffic ...................................................................................8-2

Features That Increase Traffic .................................................................................8-5

Using QoS to Shift the Traffic Mix ............................................................................8-7

Tools for Traffic Management .......... ... .... ... ... ....................................... ... ... ... .... ... ..... 8-8

Changing Passwords and Administrator Settings .... .... ... ... ... .... ... ..................................8-8

Enabling Remote Management Access .......................................................................8-10

Using the Command Line Interface ..............................................................................8-12

Using an SNMP Manager .............................................................................................8-13

Managing the Configuration File ...................................................................................8-14

Configuring Date and Time Service ..............................................................................8-17

Chapter 9 Monitoring System Performance

Enabling the Traffic Meter ...............................................................................................9-1

Activating Notification of Events and Alerts ....................................................................9-4

Viewing the Logs ............................................................................................................9-6

Viewing VPN Firewall Configuration and System Status ................................................ 9-8

Monitoring VPN Firewall Statistics ......... ... .... ... ... ... ... .... ...................................... .... ... ... ..9-9

Monitoring the Status of WAN Ports .............................................................................9-10

Monitoring Attached Devices ........................................................................................9-11

Viewing the DHCP Log .................................................................................................9-12

Monitoring Active Users ................... ... ... ... ....................................... ... .... ... ... ... ... ..........9-13

Viewing Port Triggering Status .....................................................................................9-14

Monitoring VPN Tunnel Connection Status ........ ... ....... ... ... ... .... ... ... ... .... ... ... ... ... .... ... ...9-15

Viewing the VPN Logs ..................................................................................................9-16

Chapter 10 Troubleshooting

Basic Functions ............................................................................................................10-1

Power LED Not On .................................................................................................10-2

LEDs Never Turn Off ..............................................................................................10-2

LAN or WAN Port LEDs Not On .............................................................................10-2

Troubleshooting the Web Configuration Interface ........................................................10-3

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Troubleshooting the ISP Connection ............................................................................10-4

Troubleshooting a TCP/IP Network Using a Ping Utility ...............................................10-5

Testing the LAN Path to Your VPN Firewall ...........................................................10-5

Testing the Path from Your PC to a Remote Device ..............................................10-6

Restoring the Default Configuration and Password ............ ... .... ... ... ... ..........................10-7

Problems with Date and Time .......................................................................................10-7

Using the Diagnostics Utilities ......................................................................................10-8

Appendix A Default Settings and Technical Specifications

Appendix B Network Planning for Dual WAN Ports

What You Will Need to Do Before You Begin ................................................................ B-1

Cabling and Computer Hardware Requirements .................................................... B-3

Computer Network Configuration Requirements ...................................... ... .... ... ... . B-3

Internet Configuration Requirements ...................................................................... B-3

Where Do I Get the Internet Configuration Parameters? ........................................ B-4

Internet Connection Information Form .................................................................... B-4

Overview of the Planning Process ................................................................................. B-5

Inbound Traffic ........................................................................................................ B-5

Virtual Private Networks (VPNs) ............................................................................. B-6

The Roll-over Case for Firewalls With Dual WAN Ports .......................................... B-6

The Load Balancing Case for Firewalls With Dual WAN Ports ............................... B-7

Inbound Traffic ............................................................................................................... B-7

Inbound Traffic to Single WAN Port (Reference Case) ........................................... B-7

Inbound Traffic to Dual WAN Port Systems ............................................................ B-8

Virtual Private Networks (VPNs) .................................................................................... B-9

VPN Road Warrior (Client-to-Gateway) .................................................................B-11

VPN Gateway-to-Gateway ........... ...... .... ... ... ... ... .... ... ... ... .... ... ... ... .... ... ... ...... .... ... .. B-13

VPN Telecommuter (Client-to-Gateway Through a NAT Router) .......................... B-16

Appendix C Two Factor Authentication

Why do I need Two-Factor Authentication? ...................................................................C-1

What are the benefits of Two-Factor Authentication? ............................................. C-1

What is Two-Factor Authentication ......................................................................... C-2

NETGEAR Two-Factor Authentication Solutions ....................................................... .... C-2

xii

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Appendix D Related Documents

Index

v1.0, January 2010

xiii

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

xiv

v1.0, January 2010

About This Manual

The NETGEAR® ProSafe™ Dual WAN Gigabit Firewall with SSL & IPsec VPN Reference Manual describes how to install, configure and troubleshoot a ProSafe Dual WAN Gigabit

Firewall with SSL & IPsec VPN. The information in this manual is intended for readers with intermediate computer and networking skills.

Conventions, Formats, and Scope

The conventions, formats, and scope of this manual are described in the following paragraphs:

• Typographical Conventions. This manual uses the following typographical conventions:

Italic Emphasis, books, CDs, file and server names, extensions

Bold User input, IP addresses, GUI screen text

Fixed Command prompt, CLI text, code

italic URL links

• Formats. This manual uses the following formats to highlight special messages:

Note: This format is used to highlight information of importance or special interest.

Tip: This format is used to highlight a procedure that will save time or resources.

Warning: Ignoring this type of note may result in a malfunction or damage to the

equipment.

Danger: This is a safety warning. Failure to take heed of this notice may result in

personal injury or death.

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

• Scope. This manual is written for the VPN firewall according to these specifications:

Product Version ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN Manual Publication Date January 2010

For more information about network, Internet, firewall, and VPN technologies, see the links to the NETGEAR website in Appendix D, “Related Documents.”

Note: Product updates are available on the NETGEAR, Inc. website at

http://kb.netgear.com/app/home.

How to Print This Manual

T o print this manual, your computer must have the free Adobe Acrobat reader installed in order to view and print PDF files. The Acrobat reader is available on the Adobe websit e at

http://www.adobe.com.

Tip: If your printer supports printing two pages on a single sheet of paper, you can save

paper and printer ink by selecting this feature.

Revision History

Part Number

202-10257-01 1.0 October

202-10257-02 1.1 November

202-10257-03 1.2 June 2008 Updated to align with router firmware update.

xvi

Version Number

Date Description

First publication

2007

Text corrections

2007

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

202-10257-04 1.3 March

2009

202-10257-05 1.0 January

2010

Added these corrections and topics for the March 2009 firmware maintenance release:

• WIKID 2 factor authentication

• SIP AGL support

• DHCP Relay support

• Updated VPN configuration procedure topics

• Updated the Certificate management topic

• Corrected the firewall scheduling topic Added the following new features for the January 2010 firmware

maintenance release:

• Connection reset and delay options on the WAN ISP Settings screen (see “Manually Configuring the Internet Connection”).

• Support for DNS 3322 in the Dynamic DNS submenu (see

“Configuring Dynamic DNS (Optional)”).

• Support for an address range for inbound LAN rules on the Add LAN WAN Inbound Service screen (see “Inbound Rules (Port

Forwarding)” and “Creating a LAN WAN Inbound Services Rule”).

• Support for new log options such as Resolved DNS Names and VPN on the Firewall Logs & E-mail screen (see “Activating

Notification of Events and Alerts”).

In addition, made the following substantial changes to the book:

• Resized many screen captures for better viewing.

• Made various corrections.

• Made global stylistic changes for consistency and clarity.

• Added technical support information to page ii.

• Updated the bottom label image (Figure 1-3).

• Updated the qualified Web browsers in the “Qualified Web

Browsers” and “Computer Network Configuration Requirements”

sections.

• Updated the WAN1 ISP Settings screen (Figure 2-3) and the ISP Type options in the

Connection” section.

• Updated the Dynamic DNS Configuration screen (Figure 2-12) and the DDNS providers in the “Configuring Dynamic DNS

(Optional)” section.

• Reorganized Chapter 4, “Firewall Protection and Content

Filtering.”

• Updated the LAN Setup screen (Figure 3-1). Added DHCP Relay information, LDAP information, and the Enable ARP Broadcast paragraph to the “Configuring the LAN Setup Options” section.

• Updated the Add LAN WAN Inbound Service screen (Figure 4-3), related screens in the “Inbound Rules Examples” section, and the Inbound Rules table (Table 4-2) to show that a range of IP addresses can be selected for the Send to LAN Server field.

• Updated the “Modifying Rules” section.

“Manually Configuring the Internet

v1.0, January 2010

xvii

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

202-10257-05 (continued)

1.0 January 2010

(continued)

• Updated the “Attack Checks” section and screen (Figure 4-8) to show that you can specify an IP address that is allowed to respond to a ping.

• Added the “Managing the Application Level Gateway for SIP

Sessions” section.

• Updated the “Creating Bandwidth Profiles” section, including

Figure 4-13 and Figure 4-14.

• Added the IKE Policies screen (Figure 5-20 and Figure 5-26) to respectively the “The IKE Policies Screen” section and the

“Configuring an IKE Policy for Mode Config Operation” section.

• Added the Add IKE Policy screen (Figure 5-22) to “Configuring

XAUTH for VPN Clients” section.

• Updated the VPN-SSL Policies screen (Figure 6-8 and

Figure 6-9) to show the Related Policies Table and added a Note

to the “Viewing SSL VPN Policies” section.

• Revised the “Creating a Domain” secti on, added the Authentication Protocols and Methods table (Table 7-1), and revised the Domains screen (Figure 7-1).

• Revised the “Changing Passwords and Other User Settings” section and replaced the Local Authentication screen with the Edit User screen (Figure 7-9).

• Removed the “RADIUS Server External Authentication” section (with its External Authentication screen) that has been superseded by the “RADIUS Client Configuration” section and the “Creating a Domain” section.

• Revised and corrected the “Performance Management” section.

• Updated the “Enabling Remote Management Access” section and the Remote Management screen (Figure 8-3) to show the extended secure HTTP management options.

• Updated the Firewall Logs & E-mail screen (Figure 9-2) to show the new log options and revised Table 9-1.

• Added the (firewall) Logs screen (Figure 9-3).

• Revised and corrected the Router Status information in

Table 9-3.

• Added the “Monitoring VPN Firewall Statistics” section.

• Made screen reference corrections in Chapter 10,

“Troubleshooting.”

• Updated Appe

ndix D, “Related Documents.”

xviii

v1.0, January 2010

Chapter 1

Introduction

The ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G connects your local area network (LAN) to the Internet through one or two external broadband access devices such as cable modems or DSL modems. Dual wide area network (WAN) ports allow you to increase throughput to the Internet by using both ports together, or to maintain a backup connection in case of failure of your primary Internet connection.

As a complete security solution, the FVS336G incorporates a powerful and flexible firewall to safeguard your network, while providing advanced IPsec and SSL VPN technologies for secure and simple remote connections.

The use of Gigabit Ethernet LAN and WAN ports ensures extremely high data transfer speeds The FVS336G is a plug-and-play device that can be installed and configured within minutes. This chapter contains the following sections:

• “Key Features” on this page

• “Package Contents” on page 1-5

• “Front Panel Features” on page 1-6

• “Rear Panel Features” on page 1-7

• “Default IP Address, Login Name, and Password Location” on page 1-8

• “Qualified Web Browsers” on page 1-8

Key Features

The FVS336G provides the following key features:

• Dual 10/100/1000 Mbps Gigabit Ethernet WAN ports for load balancing or failover p rotection of your Internet connection, providing increased system reliability or increased throughput.

• Built-in four-port 10/100/1000 Mbps Gigabit Ethernet LAN switch for extremely fast data transfer between local network resources.

• Advanced IPsec and SSL VPN support.

• Advanced stateful packet inspection (SPI) firewall with multi-NAT support.

1-1

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

• Easy, web-based setup for installation and management.

• Front panel LEDs for easy monitoring of status and activity.

• Flash memory for firmware upgrade.

• Internal universal switching power supply.

Dual WAN Ports for Increased Reliability or Outbound Load Balancing

The FVS336G has two broadband WAN ports. The second WAN port allows you to connect a second broadband Internet line that can be configured on a mutually-exclusive basis to:

• Provide backup and rollover if one line is inoperable, ensuring you are never disconnected.

• Load balance, or use both Internet lines simultaneously for outgoing traffic. The FVS336G balances users between the two lines for maximum bandwidth efficiency.

See “Network Planning for Dual WAN Ports” on page B-1 for the planning factors to consider when implementing the following capabilities with dual WAN port gateways:

• Single or multiple exposed hosts.

• V irtual private networks.

Advanced VPN Support for Both IPsec and SSL

The FVS336G supports IPsec and SSL virtual private network (VPN) connections.

• IPsec VPN delivers full network access between a central office and branch offices, or between a central office and telecommuters. Remote access by telecommuters requires the installation of VPN client software on the remote computer.

– IPsec VPN with broad protocol support for secure connection to other IPsec gateways and

clients.

– Bundled with the single-user license of the NETGEAR ProSafe VPN Client software

(VPN01L)

– Supports 25 concurrent IPsec VPN tunnels.

• SSL VPN provides remote access for mobile users to selected corporate resources without requiring a pre-installed VPN client on their computers.

– Uses the familiar Secure Sockets Layer (SSL) protocol, commonly used for e-commerce

transactions, to provide client-free access with customizable user portals and support for a wide variety of user repositories.

1-2 Introduction

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

– Browser based, platform-independent, remote access through a number of popular

browsers, such as Microsoft Internet Explorer or Apple Safari.

– Provides granular access to corporate resources based upon user type or group

membership.

– Supports 10 concurrent SSL VPN sessions.

A Powerful, True Firewall with Content Filtering

Unlike simple Internet sharing NAT routers, the FVS336G is a true firewall, using stateful packet inspection (SPI) to defend against hacker attacks. Its firewall features include:

• Automatically detects and thwarts denial of service (DoS) attacks such as Ping of Death and SYN Flood.

• Blocks unwanted traffic from the Internet to your LAN.

• Blocks access from your LAN to Internet locations or services that you specify as off-limits.

• Prevents objectionable content from reaching your PCs. You can control access to Internet content by screening for Web services, Web addresses, and keywords within Web addresses. You can configure the FVS336G to log and report attempts to access objectionable Internet sites.

• Permits scheduling of firewall policies by day and time.

• Logs security events such as blocked incoming traffic, port scans, attacks, and administrator logins. Y ou can configure the FVS336G to e-mail the log to you at specified intervals. You can also configure the FVS336G to send immediate alert messages to your e-mail address or e-mail pager whenever a significant event occurs.

Autosensing Ethernet Connections with Auto Uplink

With its internal 4-po rt 10/100/1000 Mbps switch and dual 10/100/1000 WAN ports, the FVS336 G can connect to either a 10 Mbps standard Ethernet network, a 100 Mbps Fast Ethernet network, or a 1000 Mbps Gigabit Ethernet network. The four LAN and two WAN interfaces are autosensing and capable of full-duplex or half-duplex operation.

The FVS336G incorporates Auto Uplink sense whether the Ethernet cable plugged into the port should have a “normal” connection such as to a PC or an “uplink” connection such as to a switch or hub. That port will then configure itself to the correct configuration. This feature eliminates the need to worry about crossover cables, as Auto Uplink will accommodate either type of cable to make the right connection.

Introduction 1-3

technology. Each Ethernet port will automatically

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Extensive Protocol Support

The FVS336G supports the Transmission Control Protocol/Internet Protocol (TCP/IP) and Routing Information Protocol

Configuration Requirements” on page B-3.

• IP Address Sharing by NAT. The FVS336G allows many networked PCs to share an Internet account using only a single IP address, which may be statically or dynamically assigned by your Internet service provider (ISP). This technique, known as NAT, allows the use of an inexpensive single-user ISP account.

• Automatic Configuration of Attached PCs by DHCP. The FVS336G dynamically assigns network configuration information, including IP, gateway, and domain name server (DNS) addresses, to attached PCs on the LAN using the Dynamic Host Configuration Protocol (DHCP). This feature greatly simplifies configuration of PCs on your local network.

• DNS Proxy. When DHCP is enabled and no DNS addresses are specified, the FVS336G provides its own address as a DNS server to the attached PCs. The FVS336G obtains actual DNS addresses from the ISP during connection setup and forwards DNS requests from the LAN.

• PPP over Ethernet (PPPoE). PPPoE is a protocol for connecting remote hosts to the Internet over a DSL connection by simulating a dial-up connection. This feature eliminates the need to run a login program such as EnterNet or WinPOET on your PC.

• Quality of Service (QoS). Support for traffic prioritization.

(RIP). For further information about TCP/IP, refer to “Internet

Easy Installation and Management

You can install, configure, and operate the FVS336G within minutes after connecting it to the network. The following features simplify installation and management tasks:

• Browser-Based Management. Browser-based configuration allows you to easily configure your FVS336G from almost any type of personal computer, such as Windows, Macintosh, or Linux. Online help documentation is built into the browser-based Web Management Interface.

• Auto Detection of ISP. The FVS336G automatically senses the type of Internet connection, asking you only for the information required for your type of ISP account.

• VPN Wizard. The FVS336G includes the NETGEAR VPN Wizard to easily configure IPsec VPN tunnels according to the recommendations of the Virtual Private Network Consortium (VPNC) to ensure the IPsec VPN tunnels are interoperable with other VPNC-compliant VPN routers and clients.

1-4 Introduction

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

• SNMP. The FVS336G supports the Simple Network Management Protocol (SNMP) to let you monitor and manage log resources from an SNMP-compliant system manager. The SNMP system configuration lets you change the system variables for MIB2.

• Diagnostic Functions. The FVS336G incorporates built-in diagnostic functions such as Ping, Trace Route, DNS lookup, and remote reboot.

• Remote Management. The FVS336G allows you to login to the Web Management Interface from a remote location on the Internet. For security, you can limit remote management access to a specified remote IP address or range of addresses.

• Visual monitoring. The FVS336G’s front panel LEDs provide an easy way to monitor its status and activity.

Maintenance and Support

NETGEAR offers the following features to help you maximize your use of the FVS336G:

• Flash memory for firmware upgrade.

• Technical support seven days a week, 24 hours a day, according to the terms identified in the Warranty and Support information card provided with your product.

Package Contents

The product package should contain the following items:

• ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G appliance.

• One AC power cable.

• Rubber feet.

• One Category 5 (Cat5) Ethernet cable.

• Installation Guide, FVS336G ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN.

• Resource CD, including: – Application Notes and other helpful information. – ProSafe VPN Client Software—one user license.

• Warranty and Support Information Card.

Introduction 1-5

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

If any of the parts are incorrect, missing, or damaged, contact your NETGEAR dealer. Keep the carton, including the original packing materials, in case you need to return the FVS336G for repair.

Front Panel Features

The FVS336G front panel shown below includes four groups of status indicator light-emitting diodes (LEDs), including Power and Test, WAN1, WAN2, and the LAN lights:

Figure 1-1

The function of each LED is described in the following table:

Table 1-1. LED Descriptions

Object Activity Description PWR

(Power)

TEST

WAN Ports

ACTIVE

SPEED

On (Green) Power is supplied to the FVS336G. Off Power is not supplied to the FVS336G. On (Amber) Test mode: The system is initializing or the initialization has failed. Blinking (Amber) Writing to Flash memory (during upgrading or resetting to defaults). Off The system has booted successfully.

On (Green) The WAN port has a valid Internet connection. On (Amber) The Internet connection is down or not being used because the WAN port

is in standby for failover. Off The WAN port is either not enabled or has no link. On (Green) The WAN port is operating at 1,000 Mbps. On (Amber) The WAN port is operating at 100 Mbps. Off The WAN port is operating at 10 Mbps.

1-6 Introduction

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Table 1-1. LED Descriptions (continued)

Object Activity Description

LINK/ACT (Link and Activity)

LAN Ports

SPEED

LINK/ACT (Link and Activity)

On (Green) The WAN port has detected a link with a connected Ethernet device. Blinking (Green) Data is being transmitted or received by the WAN port. Off The WAN port has no link.

On (Green) The LAN port is operating at 1,000 Mbps. On (Amber) The LAN port is operating at 100 Mbps. Off The LAN port is operating at 10 Mbps. On (Green) The LAN port has detected a link with a connected Ethernet device. Blinking (Green) Data is being transmitted or received by the LAN port. Off The LAN port has no link.

Rear Panel Features

The rear panel of the FVS336G includes Gigabit Ethernet LAN and WAN connections, a cable lock receptacle, power and reset switches, and an AC power connection.

Figure 1-2

Viewed from left to right, the rear panel contains the following elements:

• Factory Defaults button: Using a sharp object, press and hold this button for about ten seconds until the front panel TEST light flashes to reset the FVS336G to factory default settings. All configuration settings will be lost and the default password will be restored.

• LAN Ethernet ports: Four switched N-way automatic speed negotiating, Auto MDI/MDIX, Gigabit Ethernet ports with RJ-45 connectors.

• WAN Ethernet ports: T wo independent N-way automatic speed negotiating, Auto MDI/MDIX, Gigabit Ethernet ports with RJ-45 connectors.

• Cable security lock receptacle.

Introduction 1-7

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

IP Address

User Name

Password

• AC power receptacle: Universal AC input (100-240 VAC, 50-60 Hz).

• On/off power switch.

Default IP Address, Login Name, and Password Location

Check the label on the bottom of the FVS336G’s enclosure if you need a reminder of the following factory default information:

Figure 1-3

Qualified Web Browsers

To configure the FVS336G, you must use a Web browser such as Microsoft Internet Explorer 6 or higher, Mozilla Firefox 3 or higher, or Apple Safari 3 or higher with JavaScript, cookies, and you must have SSL enabled.

Although these Web browsers are qualified for use with the FVS336G’s Web Management Interface for configuring the FVS336G, SSL VPN users should choose a browser that supports JavaScript, Java, cookies, SSL, and ActiveX to take advantage of the full suite of applications. Note that Java is only required for the SSL VPN portal, not the Web Management Interface.

1-8 Introduction

v1.0, January 2010

Chapter 2

Connecting the FVS336G to the Internet

The initial Internet configuration of the ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G, hereafter referred to as the VPN firewall, is described in this chapter.

This chapter contains the following sections:

• “Understanding the Connection Steps” on this page

• “Logging into the VPN Firewall” on page 2-2

• “Navigating the Menus” on page 2-4

• “Configuring the Internet Connections” on page 2-4

• “Configuring the WAN Mode (Required for Dual WAN)” on page 2-11

• “Configuring Dynamic DNS (Optional)” on page 2-16

• “Configuring the Advanced WAN Options (Optional)” on page 2-18

Understanding the Connection Steps

Typically, six steps are required to complete the basic Internet connection of your VPN firewall.

1. Connect the VPN firewall physically to your network. Connect the cables and restart your network according to the instructions in the installation guide. See the Installation Guide, FVS336G ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN for complete steps. A PDF of the Installation Guide is on the NETGEAR website at: http://kbserver.netgear.com.

2. Log in to the VPN Firewall. After logging in, you are ready to set up and configure your VPN firewall. You can also change your password and enable remote management at this time. See “Logging into the VPN Firewall” on page 2-2.

3. Configure the Internet connections to your ISP(s). During this phase, you will connect to your ISPs. See “Configuring the Internet Connections” on page 2-4.

4. Configure the WAN mode (required for dual WAN operatio n). Select either dedicated (single WAN) mode, auto-rollover mode, or load balancing mode. For load balancing, you can also select any necessary protocol bindings. See “Configuring the WAN Mode (Required for

Dual WAN)” on page 2-11.

2-1

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

5. Configure dynamic DNS on the WAN ports (optional). Configure your fully qualified domain names during this phase (if required). See “Configuring Dynamic DNS (Optional)” on

page 2-16.

6. Configure the WAN options (optional). Optionally, you can enable each WAN port to respond to a ping, and you can change the factory default MTU size and port speed. However , these are advanced features and changing them is not usually required. See “Configuring the

Advanced WAN Options (Optional)” on page 2-18.

Each of these tasks is detailed separately in this chapter. The configuration of firewall and VPN features is described in later chapters.

Logging into the VPN Firewall

To connect to the VPN firewall, your computer needs to be configured to obtain an IP address automatically from the VPN firewall by DHCP. For instructions on how to configure your computer for DHCP, refer to the “Preparing Y our Network” document that you can access from the link in Appendix D, “Related Documents.”

To connect and log in to the VPN firewall follow these steps:

1. Start any of the qualified browsers, as detailed in “Qualified Web Browsers” on page 1-8.

2. Enter https://192.168.1.1 in the address field. The Manager login features appear in the

browser.

Figure 2-1

3. In the User field, type admin

4. In the Password field, type password

Note that both entries are in lower case letters.

2-2 Connecting the FVS336G to the Internet

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

5. Click Login. The Web Configuration Manager appears, displaying the Router Status screen:

Figure 2-2

Connecting the FVS336G to the Internet 2-3

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Navigating the Menus

The Web Configuration Manager menus are organized in a layered structure of main categories and submenus:

• Main menu. The horizontal orange bar near the top of the page is the main menu, containing the primary configuration categories. Clicking on a primary category changes the contents of the submenu bar.

• Submenu. The horizontal grey bar immediately below the main menu is the submenu, containing subcategories of the currently selected primary category.

• Tab. Immediately below the submenu bar, at the top of the menu active window, are one or more tabs, further subdividing the currently selected subcategory if necessary.

• Option arrow . To the right of the tabs on some menus are one or more blue dots with an arrow in the center . Clicking an option arrow brings up either a popup window or an ad vanced option menu.

Tip: In the instructions in this guide, we may refer to a menu using the notation

primary | subcategory, such as Network Configuration | WAN Settings. In this example, Network is the selected primary category (in the main menu) and WAN Settings is the selected subcategory (in the submenu).

You can now proceed to the first configuration task, configuring the VPN firewall’s Internet connections.

Configuring the Internet Connections

To set up your VPN firewall for secure Internet connections, you configure WAN ports 1 and 2. The Web Configuration Manager offers two connection configuration options:

• Automatic detection and configuration of the network connection.

• Manual configuration of the network connection.

Each option is detailed in the sections following.

2-4 Connecting the FVS336G to the Internet

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Automatically Detecting and Connecting

To automatically configure the WAN ports for connection to the Internet:

Figure 2-3

1. Select Network Configuration > WAN Settings from the menu. The WAN Settings tabs appear, with the WAN1 ISP Settings screen in view.

2. Click Auto Detect at the bottom of the menu. Auto Detect will probe the WAN port for a range of connection methods and suggest one that your ISP appears to support.

Note: When you click Auto Detect while the WAN port already has a connection,

you might lose the connection because the VPN firewall will enter its detection mode.

Connecting the FVS336G to the Internet 2-5

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Figure 2-4

a. If Auto Detect is successful, a status bar at the top of the screen will display the results. b. If Auto Detect senses a connection method that requires input from you, it will prompt you

for the information. All methods with their required settings are detailed in the following table.

Table 2-1. Internet connection methods

Connection Method Data Required

DHCP (Dynamic IP) No data is required. PPPoE Login (Username, Password);

Account Name, Domain Name (sometimes required).

PPTP Login (Username, Password),

Local IP address, and PPTP Server IP address; Account Name (sometimes required).

Fixed (Static) IP Static IP address, Subnet, and Gateway IP; DNS Server IP addresses.

c. If Auto Detect does not find a connection, you will be prompted to (1) check the physical

connection between your VPN firewall and the cable or DSL line, or to (2) check your VPN firewall’s MAC address (For more information, see “Configuring the WAN Mode

(Required for Dual WAN)” on page 2-11 and “Troubleshooting the ISP Connection” on page 10-4).

3. To verify the connection, click the WAN Status option arrow at the top right of the screen. A popup window appears, displaying the connection status of WAN port 1 (see Figure 2-5 on

page 2-7).

2-6 Connecting the FVS336G to the Internet

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Figure 2-5

The WAN Status window should show a valid IP address and gateway. If the configuration was not successful, go to “Manually Configuring the Internet Connection” on page 2-7 following this section, or see “Troubleshooting the ISP Connection” on page 10-4.

Note: If the configuration process was successful, you are connected to the Internet

through WAN port 1. If you intend to use the dual WAN capabilities of the VPN firewall, continue with the configuration process for WAN port 2.

4. Click the WAN2 ISP Settings tab.

5. Repeat the previous steps to automatically detect and configure the WAN2 Internet

connection.

6. Open the WAN Status window and verify a successful connection

If your WAN ISP configuration was successful, you can go to “Configuring the WAN Mode

(Required for Dual WAN)” on page 2-11.

If one or both automatic WAN ISP configurations failed, you can attempt a manual configuration as described in the following section, or see “Troubleshooting the ISP Connection” on page 10-4.

Manually Configuring the Internet Connection

Unless your ISP automatically assigns your configuration automatically via DHCP, you will need to obtain configuration parameters from your ISP in order to manually establish an Internet connection. The necessary parameters for various connection types are listed in Table 2-1 on

page 2-6.

Connecting the FVS336G to the Internet 2-7

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

To manually configure the WAN1 ISP settings:

1. Select Network Configuration > WAN Settings from the menu. The WAN Settings tabs appear, with the WAN1 ISP Settings screen in view.

2. In the ISP Login options, choose one of these options:

Figure 2-6

• If your ISP requires an initial login to establish an Internet connection, click Yes (this is

the default).

• If a login is not required, click No and ignore the Login and Password fields.

3. If you clicked Yes, enter the ISP-provided Login and Password information.

4. In the ISP Type options, select the type of ISP connection you use from the three listed

options. By default, “Other (PPPoE)” is selected, as shown below.

Figure 2-7

(If your connection is PPPoE or PPTP, your ISP will require an initial login.)

5. If you have installed login software such as WinPoET or Ethernet, then your connection type is PPPoE. If your ISP uses PPPoE as a login protocol:

a. Select Other (PPPoE).

2-8 Connecting the FVS336G to the Internet

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

b. Configure the following fields:

• Account Name. Valid account name for the PPPoE connection.

• Domain Name. Name of your ISP’s domain or your domain name if your ISP has

assigned one. In most cases, you may leave this field blank.

• Idle Timeout. Select Keep Connected, to keep the connection always on. To logout after the connection is idle for a period of time, click Idle Time and in the timeout field enter the number of minutes to wait before disconnecting.

• Connection Reset. Select this checkbox to to specify a time when the PPPoE WAN connection is reset, that is, the connection is disconnected momentarily and then reestablished. Enter the hour and minutes in the Disconnect Time fields to specify when the connection should be disconnected. Enter the seconds in the Delay field to specify the period after which the connection should be re-established.

6. If your ISP is Austria Telecom or any other ISP that uses PPTP as a login protocol: a. Select PPTP. b. Configure the following fields:

• Account Name (also known as Host Name or System Name). Enter the valid account

name for the PPTP connection (usually your e-mail name as assigned by your ISP). Some ISPs require entering your full e-mail address here.

• Domain Name. Your domain name or workgroup name assigned by your ISP , or your

ISPs domain name. You may leave this field blank.

• Idle Timeout. Check the Keep Connected radio button to keep the connection always on. To logout after the connection is idle for a period of time, click Idle Time and enter the number of minutes to wait before disconnecting in the timeout field. This is useful if your ISP charges you based on the amount of time you have logged in.

• My IP Address. IP address assigned by the ISP to make the connection with the ISP server.

• Server IP Address. IP address of the PPTP server.

Connecting the FVS336G to the Internet 2-9

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

7. Review the Internet (IP) Address options.

Figure 2-8

8. If your ISP has not assigned a static IP address, click Get dynamically from ISP. The ISP will

automatically assign an IP address to the VPN firewall using DHCP network protocol. The IP address and subnet mask fields will be inactivated. As an option, you can select the following checkboxes:

• Client Identifier. Select this checkbox if your ISP requires the Client Identifier

information to assign an IP address using DHCP.

• Vendor Class Identifier. Select this checkbox if your ISP requires the Vendor Class

Identifier information to assign an IP address using DHCP.

The ISP will automatically assign an IP address to the VPN firewall using DHCP network protocol.

9. If your ISP has assigned a fixed (static) IP address, select Use Static IP Address, and

configure the following fields:

• IP Address. Enter the Static IP address assigned to you, that identifies the VPN firewall to

your ISP.

• Subnet Mask. Enter the mask provided by the ISP or your network administrator.

• Gateway IP Address. Enter the IP address of the ISP’s gateway, provided by the ISP or

your network administrator.

2-10 Connecting the FVS336G to the Internet

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

10. Review the Domain Name Server (DNS) server options.

Figure 2-9

• If your ISP has not assigned any Domain Name Servers (DNS) addresses, click Get dynamically from ISP.

• If your ISP (or your IT department) has assigned DNS addresses, click Use these DNS Servers and enter the DNS server IP addresses provided to you in the fields.

11. Click Apply to save any changes to the WAN1 ISP Settings. (Or click Reset to discard any

changes and revert to the previous settings.)

12. Click Test to evaluate your entries.

The VPN firewall will attempt to connect to the NETGEAR website. If a successful connection is made, NETGEAR’s website appears.

13. If you intend to use a dual WAN mode, click the WAN2 ISP Settings tab and configure the

WAN2 ISP settings using the same steps as WAN1.

Configuring the WAN Mode (Required for Dual WAN)

The dual WAN ports of the ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN can be configured on a mutually exclusive basis for either auto-rollover (for increased system reliability) or load balancing (for maximum bandwidth efficiency), or one port can be disabled.

• Auto-Rollover Mode. The selected WAN interface is made primary and the other is the

rollover link. As long as the primary link is up, all traffic is sent over the primary link. Once the primary WAN interface goes down, the rollover link is brought up to send the traffic. Traffic will automatically roll back to the original primary link once the original primary link is back up and running again. If you want to use a redundant ISP link for backup purposes, select the WAN port that will act as the primary link for this mode. Ensure that the backup WAN port has also been configured and that you configure in the WAN Failure Detection Method section of the WAN Mode screen to support Auto-Rollover.

Connecting the FVS336G to the Internet 2 -11

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

• Load Balancing Mode. The VPN firewall distributes the outbound traffic equally among the

WAN interfaces that are functional.

Note: Scenarios could arise when load balancing needs to be bypassed for certain

traffic or applications. If certain traffic needs to travel on a specific WAN interface, configure protocol binding rules for that WAN interface. The rule should match the desired traffic.

• Single WAN Port Mode. The selected WAN interface is made primary and the other is

disabled.

Whichever WAN mode you choose, you must also choose either NAT or classical routing, as explained in the following sections.

Network Address Translation

Network Address Translation (NAT) allows all PCs on your LAN to share a single public Internet IP address. From the Internet, there is only a single device (the VPN firewall) and a single IP address. PCs on your LAN can use any private IP address range, and these IP addresses are not visible from the Internet.

• The VPN firewall uses NAT to select the correct PC (on your LAN) to receive any incoming data.

• If you only have a single public Internet IP address, you MUST use NAT. (the default setting).

• If your ISP has provided you with multiple public IP addresses, you can use one address as the primary shared address for Internet access by your PCs, and you can map incoming traffic on the other public IP addresses to specific PCs on your LAN. This one-to-one inbound mapping is configured using an inbound firewall rule.

Classical Routing

In classical routing mode, the VPN firewall performs routing, but without NAT. To gain Internet access, each PC on your LAN must have a valid static Internet IP address.

If your ISP has allocated a number of static IP addresses to you, and you have assigned one of these addresses to each PC, you can choose classical routing. Or, you can use classical routing for routing private IP addresses within a campus environment. To learn the status of the WAN ports, you can view the Router Status screen (see “Viewing VPN Firewall Configuration and System

Status” on page 9-8) or look at the LEDs on the front panel (see “Front Panel Features” on page 1-

6).

2-12 Connecting the FVS336G to the Internet

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Configuring Auto-Rollover Mode

To use a redundant ISP link for backup purposes, ensure that the backup WAN port has already been configured. Then select the WAN port that will act as the primary link for this mode and configure the WAN Failure Detection Method to support Auto-Rollover.

When the VPN firewall is configured in Auto-Rollover mode, it uses the selected WAN Failure Detection Method to check the connection of the primary link at regular intervals to detect its routing status. Link failure is detected in one of the following ways:

• By sending DNS queries to a DNS server, or

• By sending a Ping request to an IP address, or

• None (no failure detection is performed).

From each WAN interface, DNS queries or Ping requests are sent to the specified IP address. If replies are not received, after a specified number of retries, the corresponding WAN interface is considered down.

To configure the dual WAN ports for Auto-Rollover:

1. Select Network Configuration > WAN Settings from the menu, and click the WAN Mode tab. The WAN Mode screen is displayed

Figure 2-10

Connecting the FVS336G to the Internet 2 -13

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

2. In the Port Mode section, select Auto-Rollover Using WAN port.

3. From the pull-down menu, choose which WAN port will act as the primary link for this mode.

4. In the WAN Failure Detection Method section, select one of the following detection failure

methods:

• DNS lookup using ISP DNS Servers. DNS queries are sent to the DNS server configured

on the WAN ISP screens (see “Configuring the Internet Connections” on page 2-4).

• DNS lookup using this DNS Server. Enter a public DNS server. DNS queries are sent to

this server through the WAN interface being monitored.

• Ping to this IP addresses. Enter a public IP address that will not reject the Ping request

and will not consider Ping traffic to be abusive. Queries are sent to this server through the WAN interface being monitored.

5. Enter a Retry Interval in seconds. The DNS query or Ping is sent periodically after every test period. The default test period is 30 seconds.

6. Enter the Failover after count. The WAN interface is considered down after the configured number of queries have failed to elicit a reply. The rollover link is brought up after this. The Failover default is 4 failures.

The default time to roll over after the primary WAN interface fails is 2 minutes (a 30-second minimum test period for a minimum of 4 tests).

7. Click Apply to save your settings.

Once a rollover occurs, an alert will be generated (see “E-Mail Notifications of Event Logs and

Alerts” on page 4-33). When the VPN firewall detects that the failed primary WAN interface has

been restored, it will automatically rollover again to the primary WAN interface. Alternatively, you can manually force traffic back on the original primary WAN interface by reapplying the Auto-Rollover settings on the WAN Mode screen.

Configuring Load Balancing

To use multiple ISP links simultaneously, select Load Balancing. In Load Balancing mode, either WAN port will carry any outbound protocol unless protocol binding is configured. When a protocol is bound to a particular WAN port, all outgoing traffic of that protocol will be directed to the bound WAN port. For example, if the HTTPS protocol is bound to WAN 1 an d the FTP protocol is bound to WAN2, then the VPN firewall will automatically route all outbound HTTPS traffic from the computers on the LAN through the WAN1 port. All outbound FTP traffic will be routed through the WAN2 port.

2-14 Connecting the FVS336G to the Internet

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Protocol binding

Protocol binding addresses two issues:

• Segregation of traffic between links that are not of the same speed. High volume traffic can be routed through the WAN port connected to a high speed link and low volume traffic can be routed through the WAN port connected to the low speed link.

• Continuity of source IP address for secure connections. Some services, particularly HTTPS, will cease responding when a client’s source IP address changes shortly after a session has been established.

To configure the dual WAN ports for load balancing with protocol binding:

1. Select Network >WAN Settings from the menu, and click the WAN Mode tab.

2. In the Port Mode section, select Load Balancing.

3. Click view protocol bindings (if required). The W AN1 Protocol Bindin gs screen is disp layed.

Figure 2-11

Enter the following data in the Add Protocol Binding section on screen: a. Service. From the pull-down menu, choose the desired service or application to be

covered by this rule. If the desired service or application does not appear in the list, you must define it using the Services screen (see “Adding Customized Services” on page 4-

19).

b. Source Network. These settings determine which computers on your network are affected

by this rule. Select the desired options:

• Any. All PCs and devices on your LAN.

Connecting the FVS336G to the Internet 2 -15

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

• Single address. Enter the required address and the rule will be applied to that

particular PC.

• Address range. If this option is selected, you must enter the start and finish fields.

• Group 1-Group 8. If this option is selected, the devices assigned to this group will be affected. (You may also assign a customized name to the group. See Edit Group

Names on the Groups and Hosts screen in the LAN Groups submenu.)

c. Dest ination Network. These settings determine which Internet locations are covered by

the rule, based on their IP address. Select the desired option:

• Any. All Internet IP address are covered by this rule.

• Single address. Enter the required address in the start field.

• Address range. If this option is selected, you must enter the start and finish fields.

4. Click Add to save this rule.

The new Protocol Binding Rule will be enabled and added to the Protocol Binding Table for the WAN1 port.

5. Open the WAN2 Protocol Bindings tab and repeat the previous steps to set protocol bindings

for the WAN2 port.

Configuring Dynamic DNS (Optional)

Dynamic DNS (DDNS) is an Internet service that allows routers with varying public IP addresses to be located using Internet domain names. To use DDNS, you must setup an account with a DDNS provider such as DynDNS.org, TZO.com, Oray .net, or 3322.or g. (Links to DynDNS, TZO, Oray, and 3322 are provided for your convenience on the Dynamic DNS Configuration screen.) The VPN firewall firmware includes software that notifies dynamic DNS servers of changes in the WAN IP address, so that the services running on this network can be accessed by others on the Internet.

If your network has a permanently assigned IP address, you can register a domain name and ha ve that name linked with your IP address by public Domain Name Servers (DNS). However, if your Internet account uses a dynamically assigned IP address, you will not know in advance what your IP address will be, and the address can change frequently—hence, the need for a commercial DDNS service, which allows you to register an extension to its domain, and restores DNS requests for the resulting FQDN to your frequently-changing IP address.

After you have configured your account information in the VPN firewall, whenever your ISP-assigned IP address changes, your VPN firewall will automatically contact your DDNS service provider, log in to your account, and register your new IP address.

2-16 Connecting the FVS336G to the Internet

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

You may need to use a fully qualified domain name (FQDN):

• For auto-rollover mode, you will need a FQDN to implement features such as exposed hosts and virtual private networks regardless of whether you have a fixed or dynamic IP address.

• For load balancing mode, you may still need a FQDN either for convenience or if you have a dynamic IP address.

Note: If your ISP assigns a private WAN IP address such as 192.168.x.x or 10.x.x.x, the

dynamic DNS service will not work because private addresses will not be routed on the Internet.

To configure dynamic DNS:

1. Select Network Configuration > Dynamic DNS from the menu and click the Dynamic DNS Configuration tab. The Dynamic DNS Configuration screen is displayed.

Figure 2-12

Connecting the FVS336G to the Internet 2 -17

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

The Current WAN Mode section reports the currently configured WAN mode. (For example, Single Port WAN1, Load Balancing or Auto Rollover.) Only those options that match the configured WAN Mode will be accessible.

2. Select the tab for the DDNS service provider you will use.

3. Click the information or registration link in the upper right corner for registration information.

Figure 2-13:

4. Access the website of the DDNS service provider and register for an account (for example, for dyndns.org, go to http://www.dyndns.org).

5. For each WAN port, click the Yes radio button for Change DNS to <your desired DDNS service> and configure the active fields:

a. Enter the account information for the service you have chosen (for example, user name,

password, key, or domain).

b. If your DDNS provider allows the use of wild cards in resolving your URL, you may

select the Use wildcards checkbox to activate this feature. For example, the wildcard feature will cause

yourhost.dyndns.org

*.yourhost.dyndns.org to be aliased to the same IP address as

c. If your WAN IP address does not change often, you may need to force a periodic update to

the DDNS service to prevent your account from expiring. If it appears, you can select the

Update every 30 days checkbox to enable a periodic update.

6. Click Apply to save your configuration.

Configuring the Advanced WAN Options (Optional)

To configure the Advanced WAN options:

1. Select Network Configuration > WAN Settings from the menu. The WAN1 ISP Settings screen is displayed.

2. Click the Advanced link to the right of the tabs. The WAN1 Advanced Options screen is displayed (see Figure 2-14 on page 2-19).

2-18 Connecting the FVS336G to the Internet

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Figure 2-14

3. Edit the default information you want to change. a. MTU Size. The normal MTU (Maximum Transmit Unit) value for most Ethernet

networks is 1500 Bytes, or 1492 Bytes for PPPoE connections. For some ISPs, you may need to reduce the MTU. This is rarely required, and should not be done unless you are sure it is necessary for your ISP connection.

b. Port Speed. In most cases, your VPN firewall can automatically determine the connection

speed of the WAN port. If you cannot establish an Internet connection and the WAN Link or Speed LED blinks continuously, you may need to manually select the port speed. AutoSense is the default.

If you know that the Ethernet port on your broadband modem supports 100BaseT, select 100BaseT Half_Duplex; otherwise, select 10BaseT Half_Duplex. Use the half-duplex settings unless you are sure you need full duplex.

c. Router's MAC Address. Each computer or router on your network has a unique 32-bit

local Ethernet address. This is also referred to as the computer's MAC (Media Access Control) address. The default is Use default address. However, if your ISP requires MAC authentication, then select either of these options:

• Use this Computer's MAC address to have the VPN firewall use the MAC address of the computer you are now using, or

• Use This MAC Address to manually type in the MAC address that your ISP expects.

The format for the MAC address is 01:23:45:67:89:AB (numbers 0-9 and either uppercase or lowercase letters A-F). If you select Use This MAC Address and then type in a MAC address, your entry will be overwritten.

4. Click Apply to save your changes.

Connecting the FVS336G to the Internet 2 -19

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Additional WAN Related Configuration

• If you want the ability to manage the VPN firewall remotely, enable remote management at this time (see “Enabling Remote Management Access” on page 8-10). If you enable remote management, we strongly recommend that you change your password (see “Changing

Passwords and Administrator Settings” on page 8-8).

• At this point, you can set up the traffic meter for each WAN. See “Enabling the Traffic Meter”

on page 9- 1.

2-20 Connecting the FVS336G to the Internet

v1.0, January 2010

Chapter 3

LAN Configuration

This chapter describes how to configure the advanced LAN features of your ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G.

This chapter contains the following sections

• “Choosing the VPN Firewall DHCP Options” on this page

• “Configuring the LAN Setup Options” on page 3-2

• “Managing Groups and Hosts (LAN Groups)” on page 3-6

• “Configuring Multi Home LAN IP Addresses” on page 3-10

• “Configuring Static Routes” on page 3-11

• “Configuring Routing Information Protocol (RIP)” on page 3-13

Choosing the VPN Firewall DHCP Options

By default, the VPN firewall will function as a DHCP (Dynamic Host Configuration Protocol) server, allowing it to assign IP, DNS server, WINS Server, and default gateway addresses to all computers connected to the VPN firewall’s LAN. The assigned default ga teway address is the LAN address of the VPN firewall. IP addresses will be assigned to the attached PCs from a pool of addresses that you must specify. Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN.

For most applications, the default DHCP and TCP/IP settings of the VPN firewall are satisfactory. See the link to “TCP/IP Networking Basics” in Appendix D, “Related Documents” for information about how to assign IP addresses for your network.

If another device on your network will be the DHCP server, or if you will manually configure the network settings of all of your computers, clear the Enable DHCP server radio box by selecting the Disable DHCP Server radio box. Otherwise, leave it checked.

Specify the pool of IP addresses to be assigned by setting the starting IP address and ending IP address. These addresses should be part of the same IP address subnet as the VPN firewall’s LAN IP address. Using the default addressing scheme, you should define a range between 192.168.1.2 and 192.168.1.100, although you may wish to save part of the range for devices with fixed addresses.

3-1

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

The VPN firewall will deliver the following parameters to any LAN device that requests DHCP:

• An IP address from the range you have defined.

• Subnet mask.

• Gateway IP address (the VPN firewall’s LAN IP address).

• Primary DNS server (the VPN firewall’s LAN IP address).

• WINS server (if you entered a WINS server address on the DHCP section of the LAN Setup screen).

• Lease time (date obtained and duration of lease).

DHCP Relay options allow you to make the VPN firewall a dhcp relay agent. The DHCP Relay Agent makes it possible for DHCP broadcast messages to be sent over routers that do not support forwarding of these types of messages. The DHCP Relay Agent is therefore the routing protocol that enables DHCP clients to obtain IP addresses from a DHCP server on a remote subnet, or which is not located on the local subnet. If you have no configured DHCP Relay Agent, your clients would only be able to obtain IP addresses from the DHCP server which is on the same subnet. T o enable clients to obtain IP addresses from a DHCP server on a remote subnet, you have to configure the DHCP Relay Agent on the subnet that contains the remote clients, so that it can relay DHCP broadcast messages to your DHCP server.

When the DNS Proxy option is enabled, the VPN firewall will act as a proxy for all DNS requests and communicate with the ISP’s DNS servers (as configured in the WAN settings screen). All DHCP clients will receive the Primary/Secondary DNS IP along with the IP address where the DNS Proxy is running, that is, the VPN firewall’s LAN IP address. When disabled, all DHCP clients will receive the DNS IP addresses of the ISP excluding the DNS Proxy IP address. The feature is particularly useful in Auto Rollover mode. For example, if the DNS servers for each connection are different, then a link failure may render the DNS servers inaccessible. However, when the DNS proxy is enabled, then clients can make requests to the VPN firewall and the VPN firewall, in turn, sends those requests to the DNS servers of the active connection.

Configuring the LAN Setup Options

The LAN Setup screen allows configuration of LAN IP services such as DHCP and allows you to configure a secondary or “multi-home” LAN IP setup in the LAN. The default values are suitable for most users and situations. Disable the DNS Proxy if you are using a dual WAN configuration with route diversity and failover. These are advanced settings most usually configured by a network administrator.

3-2 LAN Configuration

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Note: If you enable the DNS Relay feature, you will not use the VPN firewall as a DHCP

server but rather as a DHCP relay agent for a DHCP server somewhere else on your network.

1. Go to Network Configuration > LAN Setup to display the LAN Setup screen.

Figure 3-1

2. In the LAN TCP/IP Setup section, configure the following settings:

• IP Address. The LAN address of your VPN firewall (factory default: 192.168.1.1).

LAN Configuration 3-3

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Note: If you change the LAN IP address of the VPN firewall while connected

through the browser, you will be disconnected. You must then open a new connection to the new IP address and log in again. For example, if you change the default IP address 192.168.1.1 to 10.0.0.1, you must now enter https://10.0.0.1 in your browser to reconnect to the Web Configuration Manager.

• IP Subnet Mask. The subnet mask specifies the network number portion of an IP address.

Your VPN firewall will automatically calculate the subnet mask based on the IP address that you assign. Unless you are implementing subnetting, use 255.255.255.0 as the subnet mask.

3. In the DHCP section, select Disable DHCP Server, Enable DHCP Server, or DHCP Relay. By default, the VPN firewall will function as a DHCP server, providing TCP/IP configuration settings for all computers connected to the VPN firewall's LAN. If another device on your network will be the DHCP server, or if you will manually configure all devices, click Disable DHCP Server. If the VPN firewall will function as a DHCP relay agent, select DHCP Relay and enter the IP address of the DHCP relay gateway in the Relay Gateway field.

If the DHCP server is enabled, enter the following parameters:

• Domain Name. (Optional) The DHCP will assign the entered domain to DHCP clients.

• Starting IP Address. Specifies the first of the contiguous addresses in the IP address pool.

Any new DHCP client joining the LAN will be assigned an IP address between this address and the Ending IP Address. The IP address 192.168.1.2 is the default start address.

• Ending IP Address. Specifies the last of the contiguous addresses in the IP address pool.

The IP address 192.168.1.100 is the default ending address.

Note: The starting and ending DHCP addresses should be in the same subnet as

the LAN IP address of the VPN firewall (the IP address configured in the LAN TCP/IP Setup section of the LAN Setup screen).

• Primary DNS Server. (Optional) If an IP address is specified, the VPN firewall will

provide this address as the primary DNS server IP address. If no address is specified, the VPN firewall will provide its own LAN IP address as the primary DNS server IP address.

• Secondary DNS Server. (Optional) If an IP address is specified, the VPN firewall will

provide this address as the secondary DNS server IP address.

3-4 LAN Configuration

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

• WINS Server. (Optional) Specifies the IP address of a local Windows NetBIOS Server if

one is present in your network.

• Lease Time. This specifies the duration for which IP addresses will be leased to clients. If you will use a Lightweight Directory Access Protocol (LDAP) authentication server for

network-validated domain-based authentication, select Enable LDAP Information to enable the DHCP server to provide LDAP server information. Enter the following parameters:

• LDAP Server. Specifies the name or the IP address of the device that hosts the LDAP

server.

• Search Base. Specifies the distinguished name (dn) at which to start the search, specified

as a sequence of relative distinguished names (rdn), connected with commas and without any blank spaces. For most users, the search base is a variation of the domain name. For example, if your domain is yourcompany.com, your search base dn might be as follows: dc=yourcompany,dc=com.

• port. Specifies the port number that the LDAP server is using. Leave this field blank for

the default port.

4. In the Advanced Settings section, configure the following settings:

• Enable DNS Proxy. If the DNS proxy is enabled (which is the default setting), the DHCP

server will provide the VPN firewall’s LAN IP address as the DNS server for address name resolution. If this box is unchecked, the DHCP server will provide the ISP’s DNS server IP addresses. The VPN firewall will still service DNS requests sent to its LAN IP address unless you disable DNS Proxy in the VPN firewall settings (see “Attack Checks”

on page 4- 15).

• Enable ARP Broadcast. If ARP broadcast is enabled (which is the default setting), the

Address Resolution Protocol (ARP) is broadcasted on the LAN so that IP addresses can be mapped to physical addresses (that is, MAC addresses).

5. Click Apply to save your settings.

Note: Once you have completed the LAN setup, all outbound traffic is allowed and

all inbound traffic is discarded. To change these default traffic rules, refer to

Chapter 4, “Firewall Protection and Content Filtering.”

LAN Configuration 3-5

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Managing Groups and Hosts (LAN Groups)

The Known PCs and Devices table on the LAN Groups screen contains a list of all known PCs and network devices that are assigned dynamic IP addresses by the VPN firewall, or have been discovered by other means. Collectively, these entries make up the LAN Groups Database.

The LAN Groups Database is updated by these methods:

• DHCP Client Requests. By default, the DHCP server in this VPN firewall is enabled, and will accept and respond to DHCP client requests from PCs and other network devices. These requests also generate an entry in the LAN Groups Database. Because of this, leaving the DHCP server feature (on the LAN screen) enabled is strongly recommended.

• Scanning the Network. The local network is scanned using ARP requests. The ARP scan will detect active devices that are not DHCP clients. However, sometimes the name of the PC or device cannot be accurately determined, and will appear in the database as Unknown.

• Manual Entry. You can manually enter information about a network device.

Some advantages of the LAN Groups Database are:

• Generally, you do not need to enter either IP address or MAC addresses. Instead, you can just select the desired PC or device.

• No need to reserve an IP address for a PC in the DHCP server. All IP address assignments made by the DHCP server will be maintained until the PC or device is removed from the database, either by expiry (inactive for a long time) or by you.

• No need to use a fixed IP on PCs. Because the address allocated by the DHCP server will never change, you don't need to assign a fixed IP to a PC to ensure it always has the same IP address.

• MAC level control over PCs. The LAN Groups Database uses the MAC address to identify each PC or device. So changing a PC’s IP address does not affect any restrictions on that PC.

• Group and individual control over PCs. – You can assign PCs to Groups and apply restrictions to each Group using the Firewall

Rules screen (see “Using Rules to Block or Allow Specific Kinds of Traffic” on page 4-2).

– You can also select the Groups to be covered by the Block Sites feature (see “Blocking

Internet Sites (Content Filtering)” on page 4-25).

– If necessary, you can also create Firewall Rules to apply to a single PC (see “Configuring

Source MAC Filtering” on page 4-28). Because the MAC address is used to identify each

PC, users cannot avoid these restrictions by changing their IP address.

3-6 LAN Configuration

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

• A computer is identified by its MAC address—not its IP address. Hence, changing a computer’s IP address does not affect any restrictions applied to that PC.

Viewing the LAN Group s Database

To view the LAN Groups Database, follow these steps:

1. Select Network Configuration > LAN Settings from the menu. The LAN Setup screen is displayed.

2. Click the LAN Groups tab. The LAN Groups screen is displayed.

Figure 3-2

The Known PCs and Devices table lists the entries in the LAN Groups Database. For each computer or device, the following fields are displayed:

• Name. The name of the PC or device. For computers that do not support the NetBIOS protocol, this will be listed as “Unknown” (you can edit the entry manually to add a meaningful name). If the computer was assigned an IP address by the DHCP server, then the Name will be appended by an asterisk.

• IP Address. The current IP address of the computer. For DHCP clients of the VPN firewall, this IP address will not change. If a computer is assigned a static IP addresses, you will need to update this entry manually if the IP address on the computer has been changed.

• MAC Address. The MAC address of the PC’s network interface.

• Group. Each PC or device can be assigned to a single group. By default, a computer is assigned to Group 1, unless a different group is chosen from the Group pull-down menu.

• Action. Allows modification of the selected entry by clicking Edit.

LAN Configuration 3-7

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Adding Devices to the LAN Groups Database

To add devices manually to the LAN Groups Database, follow these steps:

1. In the Add Known PCs and Devices section, make the following entries:

• Name. Enter the name of the PC or device.

• IP Address Type. From the pull-down menu, choose how this device receives its IP

address. The choices are: – Fixed (Set on PC). The IP address is statically assigned on the computer. – Reserved (DHCP Client). Directs the VPN firewall’s DHCP server to always assign

the specified IP address to this client during the DHCP negotiation (see “Configuring

DHCP Address Reservation” on page 3-9).

Note: When assigning a reserved IP address to a client, the IP address selected

must be outside the range of addresses allocated to the DHCP server pool.

• IP Address. Enter the IP address that this computer or device is assigned in the IP

Address field. If the IP Address Type is Reserved (DHCP Client), the VPN firewall will reserve the IP address for the associated MAC address.

• MAC Address. Enter the MAC address of the computer’s network interface in the MAC

Address field. The MAC address format is six colon-separated pairs of hexadecimal characters (0-9 and A-F), such as 01:23:45:67:89:AB.

• Group. From the pull-down menu, select the LAN Group to which the computer will be

assigned. (Group 1 is the default group.)

2. Click Add. The device will be added to the Known PCs and Devices table.

3. (Optional) To enable DHCP Address Reservation after the entry is in the table, select the

checkbox for the new table entry and click Save Binding to bind the IP address to the MAC address for DHCP assignment.

Changing Group Names in the LAN Groups Database

By default, the LAN Groups are named Group1 through Group8. You can rename these group names to be more descriptive, such as Engineering or Marketing.

3-8 LAN Configuration

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

To edit the names of any of the eight available groups:

1. From the LAN Groups tab, click the Edit Group Names link to the right of the tabs. The Network Database Group Names screen appears.

Figure 3-3

2. Select the radio button next to any group name to make that name active for editing.

3. Type a new name in the field.

4. Select and edit other group names if desired.

5. Click Apply to save your settings.

Configuring DHCP Address Reservation

When you specify a reserved IP address for a device on the LAN (based on the MAC address of the device), that computer or device will always receive the same IP address each time it accesses the VPN firewall’s DHCP server. Reserved IP addresses should be assigned to servers or access points that require permanent IP address settings. The Reserved IP address that you select must be outside of the DHCP Server pool.

To reserve an IP address, manually enter the device on the LAN Groups screen, specifying Reserved (DHCP Client), as described in “Adding Devices to the LAN Groups Database” on

page 3-8.

Note: The reserved address will not be assigned until the next time the PC contacts the

VPN firewall’s DHCP server. Reboot the PC or access its IP configuration and force a DHCP release and renew.

LAN Configuration 3-9

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Configuring Multi Home LAN IP Addresses

If you have computers on your LAN using different IP address ranges (for example, 172.16.2.0 or

10.0.0.0), you can add “aliases” to the LAN port, giving computers on those networks access to the

Internet through the VPN firewall. This allows the VPN firewall to act as a gateway to additional logical subnets on your LAN. You can assign the VPN firewall an IP address on each additional logical subnet.

To add a secondary LAN IP address:

1. Select Network Configuration > LAN Settings from the menu, and click the LAN Multihoming tab. The LAN Multi-homing screen is displayed.

Figure 3-4

The Available Secondary LAN IPs table lists the secondary LAN IP addresses added to the VPN firewall.

• IP Address. The “alias,” an additional IP address hosted by the LAN port of the VPN

firewall. This address will be the gateway for computers on the secondary subnet.

• Subnet Mask. The IPv4 subnet mask that defines the range of the secondary subnet.

2. In the Add Secondary LAN IP Address section, enter the additional IP address and subnet mask to be assigned to the LAN port of the VPN firewall.

3-10 LAN Configuration

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

3. Click Add. The new Secondary LAN IP address will appear in the A vailable Secondary LAN IPs table.

Note: IP addresses on these secondary subnets cannot be configured in the DHCP

server. The hosts on the secondary subnets must be manually configured with IP addresses, gateway IP addresses, and DNS server IP addresses.

Tip: The secondary LAN IP address will be assigned to the LAN interface of the

VPN firewall and can be used as a gateway by computers on the secondary subnet.

Configuring Static Routes

Static Routes provide additional routing information to your VPN firewall. Under normal circumstances, the VPN firewall has adequate routing information after it has been configured for Internet access, and you do not need to configure additional static routes. You should configure static routes only for unusual cases such as multiple firewalls or multiple IP subnets located on your network.

To add or edit a static route:

1. Select Network Configuration > Routing from the menu. The Routing screen is displayed.

Figure 3-5

LAN Configuration 3-11

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

2. Click Add. The Add Static Route screen is displayed.

Figure 3-6

3. Enter a route name for this static route in the Route Name field (for identification and management).

4. Select Active to make this route effective.

5. Select Private if you want to limit access to the LAN only. The static route will not be

advertised in RIP.

6. Enter the Destination IP Address to the host or network to which the route leads.

7. Enter the IP Subnet Mask for this destination. If the destination is a single host, enter

255.255.255.255.

8. Enter the Interface which is the physical network interface (WAN1, WAN2, or LAN) through which this route is accessible.

9. Enter the Gateway IP Address through which the destination host or network can be reached (must be a device on the same LAN segment as the VPN firewall).

10. Enter the Metric priority for this route. If multiple routes to the same destination exit, the route with the lowest metric is chosen (value must be between 1 and 15).

11. Click Apply to save your settings. The new static route will be added to the Static Routes table.

3-12 LAN Configuration

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Configuring Routing Information Protocol (RIP)

RIP (Routing Information Protocol, RFC 2453) is an Interior Gateway Protocol (IGP) that is commonly used in internal networks (LANs). It allows a router to exchange its routing information automatically with other routers, and allows it to dynamically adjust its routing tables and adapt to changes in the network. RIP is disabled by default.

To configure RIP parameters:

1. Select Network Configuration > Routing from the menu.

2. Click the RIP Configuration link to the right of the tab. The RIP Configuration screen is

displayed.

Figure 3-7

3. From the RIP Direction pull-down menu, choose the direction in which the VPN firewall will send and receive RIP packets. The choices are:

• None. The VPN firewall neither broadcasts its route table nor does it accept any RIP

packets from other routers. This effectively disables RIP.

LAN Configuration 3-13

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

• Both. The VPN firewall broadcasts its routing table and also processes RIP information

received from other routers.

• Out Only. The VPN firewall broadcasts its routing table periodically but does not accept

RIP information from other routers.

• In Only. The VPN firewall accepts RIP information from other routers, but does not

broadcast its routing table.

4. From the RIP Version pull-down menu, choose the version from the following options:

• Disabled. The default section disables RIP versions.

• RIP-1. A classful routing that does not include subnet information. This is the most

commonly supported version.

• RIP-2. Supports subnet information. Both RIP-2B and RIP-2M send the routing data in

RIP-2 format: – RIP-2B. Sends the routing data in RIP-2 format and uses subnet broadcasting.

– RIP-2M. Sends the routing data in RIP-2 format and uses multicasting.

5. Authentication for RIP2B/2M required? If you selected RIP-2B or RIP-2M, check the Yes radio box to enable authentication, and enter the MD-5 keys to authenticate between devices in the First Key Parameters and Second Key Parameters sections on the screen.

6. Click Apply to save your settings.

3-14 LAN Configuration

v1.0, January 2010

Chapter 4

Firewall Protection and Content Filtering

This chapter describes how to use the content filtering features of the ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G to protect your network.

This chapter contains the following sections:

• “About Firewall Protection and Content Filtering” on this page

• “Using Rules to Block or Allow Specific Kinds of Traffic” on page 4-2

• “Configuring Other Firewall Features” on page 4-15

• “Creating Services, QoS Profiles, and Bandwidth Profiles” on page 4-19

• “Setting a Schedule to Block or Allow Specific Traffic” on page 4-24

• “Blocking Internet Sites (Content Filtering)” on page 4-25

• “Configuring Source MAC Filtering” on page 4-28

• “Configuring IP/MAC Address Binding” on page 4-30

• “Configuring Port Triggering” on pa ge 4-31

• “Managing the Application Level Gateway for SIP Sessions” on page 4-18

• “E-Mail Notifications of Event Logs and Alerts” on page 4-33

• “Administrator Tips” on page 4-33

About Firewall Protection and Content Filtering

The VPN firewall provides you with Web content filtering options, plus browsing activity reporting and instant alerts via e-mail. Network administrators can establish restricted access policies based on time-of-day, Web addresses and Web address keywords. You can also block Internet access by applications and services, such as chat or games.

A firewall is a special category of router that protects one network (the “trusted” network, such as your LAN) from another (the untrusted network, such as the Internet), while allowing communication between the two. You can further segment keyword blocking to certain known groups (see “Managing Groups and Hosts (LAN Groups)” on page 3-6 to set up LAN Groups).

4-1

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

A firewall incorporates the functions of a NAT (Network Address Translation) router, while adding features for dealing with a hacker intrusion or attack, and for controlling the types of traffic that can flow between the two networks. Unlike simple Internet sharing NAT routers, a firewall uses a process called stateful packet inspection to protect your network from attacks and intrusions. NAT performs a very limited stateful inspection in that it considers whether the incoming packet is in response to an outgoing request, but true Stateful Packet Inspection goes far beyond NAT.

Using Rules to Block or Allow Specific Kinds of Traffic

This section includes the following topics:

• “About Services-Based Rules” on page 4-3

• “Viewing the Rules” on page 4-8

• “Order of Precedence for Rules” on page 4-8

• “Setting the Default Outbound Policy” on page 4-8

• “Creating a LAN WAN Outbound Services Rule” on page 4-9

• “Creating a LAN WAN Inbound Services Rule” on page 4-10

• “Modifying Rules” on page 4-11

• “Inbound Rules Examples” on page 4-11

• “Outbound Rules Example” on page 4-14

Firewall rules are used to block or allow specific traffic passing through from one side to the other. Inbound rules (WAN to LAN) restrict access by outsiders to private resources, selectively allowing only specific outside users to access specific resources. Outbound rules (LAN to WAN) determine what outside resources local users can have access to.

A firewall has two default rules, one for inbound traffic and one for outbound traffic. The default rules of the VPN firewall are:

• Inbound. Block all access from outside except responses to requests from the LAN side.

• Outbound. Allow all access from the LAN side to the outside.

User-defined firewall rules for blocking or allowing traffic on the VPN firewall can be applied to inbound or outbound traffic.

4-2 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

About Services-Based Rules

The rules to block traffic are based on the traffic’s category of service.

• Outbound Rules (service blocking). Outbound traffic is normally allowed unless the VPN firewall is configured to disallow it.

• Inbound Rules (port forwarding). Inbound traffic is normally blocked by the VPN firewall unless the traffic is in response to a request from the LAN side. The VPN firewall can be configured to allow this otherwise blocked traffic.

• Customized Services. Additional services can be added to the list of services in the factory default list. These added services can then have rules defined for them to either allow or block that traffic (see “Adding Customized Services” on page 4-19).

• Quality of Service (QoS) priorities. Each service at its own native priority that impacts its quality of performance and tolerance for jitter or delays. You can change this QoS priority if desired to change the traffic mix through the system (see “Setting Quality of Service (QoS)

Priorities” on page 4-21).

Outbound Rules (Service Blocking)

The VPN firewall allows you to block the use of certain Internet services by PCs on your network. This is called service blocking or port filtering.

The default policy can be changed to block all outbo und traffic and enable only specific servi ces to pass through the VPN firewall. The following Outbound Rules table lists the configured rules for outgoing traffic. An outbound rule is defined by the following fields:

Table 4-1. Outbound Rules

Item Description

Service Select the desired service or appli c ation to be covered by this rule. If the desired service

or application does not appear in the table, you must define it using the Services screen (see “Adding Customized Services” on page 4-19).

Action Select the desired action for outgoing connections covered by this rule:

• BLOCK always

• BLOCK by schedule, otherwise Allow

• ALLOW always

• ALLOW by schedule, otherwise Block Note: Any outbound traffic that is not blocked by rules you create will be allowed by the default rule. ALLOW rules are only useful if the traffic is already covered by a BLOCK rule. That is, you wish to allow a subset of traffic that is currently blocked by another rule.

Firewall Protection and Content Filtering 4-3

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Table 4-1. Outbound Rules (continued)

Item Description

Select Schedule Select the desired time schedule (Schedule1, Schedule2, or Schedule3) that will be used

by this rule.

• This pull-down menu gets activated only when “BLOCK by schedule, otherwise Allow” or “ALLOW by schedule, otherwise Block” is selected as Action.

• Use schedule screen to configure the time schedules (see “Setting a Schedule to Block

or Allow Specific Traffic” on page 4-24).

LAN Users Specifies which computers on your network are affected by this rule. Select the desired

options:

• Any – All PCs and devices on your LAN.

• Single address – Enter the required address and the rule will be applied to that particular PC.

• Address range – If this option is selected, you must enter the start and finish fields.

• Groups – Select the Group to which this rule will apply. Use the LAN Groups screen (under Network Configuration) to assign PCs to Groups. See “Managing Groups and

Hosts (LAN Groups)” on page 3-6.

WAN Users Specifies which Internet locations are covered by the rule, based on their IP address.

Select the desired option:

• Any – All Internet IP address are covered by this rule.

• Single address – Enter the required address in the start field.

• Address range – If this option is selected, you must enter the start and end fields.

QoS Priority Specifies the priority of a service which, in turn, determines the quality of that service for

the traffic passing through the VPN firewall. By default, the priority shown is that of th e selected service. The user can change it accordingly. If the user does not make a selection (leaves it as Normal-Service), then the native priority of the service will be applied to the policy. See “Setting Quality of Service (QoS) Priorities” on page 4-21.

Log This determines whether packets covered by this rule are logged. Select the desired

action:

• Always – always log traffic considered by this rule, whether it matches or not. This is useful when debugging your rules.

• Never – never log traffic considered by this rule, whether it matches or not.

Bandwidth Profile

NAT IP Specifies whether the source IP address of the outgoing packets should be the WAN

NAT Single IP Is On (interface)

Specifies the name of a bandwidth limiting profile. Using a bandwidth profile, bandwidth consumed by different connections can be limited. If multiple connections correspond to the same firewall rule, they will share the same bandwidth limiting. See “Creating

Bandwidth Profiles” on page 4-22.

interface address or a specified address, which should belong to the WAN subnet. Specifies to which WAN interface the NAT IP address belongs. All outgoing packets will

be routed through the specified WAN interface only.

4-4 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Note: See “Configuring Source MAC Filtering” on page 4-28 for yet another way to

block outbound traffic from selected PCs that would otherwise be allowed by the VPN firewall.

Inbound Rules (Port Forwarding)

When the VPN firewall uses Network Address Translation (NAT), your network presents only one IP address to the Internet and outside users cannot directly address any of your local computers. However, by defining an inbound rule you can make a local server (for example, a Web server or game server) visible and available to the Internet. The rule tells the VPN firewall to direct inbound traffic for a particular service to one local server based on the destination port number. This is al so known as port forwarding.

Whether or not DHCP is enabled, how the PCs will access the server’s LAN address impacts the inbound rules. For example:

• If your external IP address is assigned dynamically by your ISP (DHCP enabled), the IP address may change periodically as the DHCP lease expires. Consider using dynamic DNS so that external users can always find your network (see “Configuring Dynamic DNS (Optional)”

on page 2- 16).

• If the IP address of the local server PC is assigned by DHCP, it may change when the PC is rebooted. To avoid this, use the Reserved IP address feature to keep the PC’s IP address constant (see “Configuring DHCP Address Reservation” on page 3-9).

• Local PCs must access the local server using the server’s local LAN address. Attempts by local PCs to access the server using the external WAN IP address will fail.

Note: See “Configuring Port Triggering” on page 4-31 for yet another way to allow

certain types of inbound traffic that would otherwise be blocked by the VPN firewall.

Firewall Protection and Content Filtering 4-5

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Table 4-2. Inbound Rules

Item Description

Service Select the desired service or appli c ation to be covered by this rule. If the desired service

or application does not appear in the table, you must define it using the Services screen (see “Adding Customized Services” on page 4-19).

Action Select the desired action for packets covered by this rule:

• BLOCK always

• BLOCK by schedule, otherwise Allow

• ALLOW always

• ALLOW by schedule, otherwise Block Note: Any inbound traffic which is not allowed by rules you create will be blocked by the Default rule.

Select Schedule Select the desired time schedule (Schedule1, Schedule2, or Schedule3) that will be used

by this rule (see “Setting a Schedule to Block or Allow Specific Traffic” on page 4-24).

• This pull-down menu gets activated only when “BLOCK by schedule, otherwise Allow” or “ALLOW by schedule, otherwise Block” is selected as Action.

• Use schedule screen to configure the time schedules.

Send to LAN Server

Translate to Port Number

WAN Destination IP Address

LAN users This field appears only with NAT routing (not classical routing). Specifies which computers

WAN Users Specifies which Internet locations are covered by the rule, based on their IP addresses.

This field appears only with NAT routing (not classical routing). This LAN address or range of LAN addresses determines which computer or computers on your network are hosting this service rule. (You can also translate these addresses to a port number.)

Check this box and enter a port number to assign the LAN Server to a different service port number. Inbound traffic to the service port will have the destination port number modified to the port number configured here.

Specifies the destination IP address applicable to incoming traffic. This is the public IP address that will map to the internal LAN server; it can either be the address of the WAN1 or WAN2 ports or another public IP address

on your network are affected by this rule. Select the desired options:

• Any – All PCs and devices on your LAN.

• Single address – Enter the required address and the rule will be applied to that particular PC.

• Address range – If this option is selected, you must enter the start and finish fields.

• Groups – Select the Group to which this rule will apply. Use the LAN Groups screen (under Network Configuration) to assign PCs to Groups. See “Managing Groups and

Hosts (LAN Groups)” on page 3-6.

Select the desired option:

• Any – All Internet IP address are covered by this rule.

• Single address – Enter the required address in the start field.

• Address range – If this option is selected, you must enter the start and end fields.

4-6 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Table 4-2. Inbound Rules (continued)

Item Description

Log Specifies whether packets covered by this rule are logged. Select the desired action:

• Always – Always log traffic considered by this rule, whether it matches or not. This is useful when debugging your rules.

• Never – Never log traffic considered by this rule, whether it matches or not.

Bandwidth Profile

Bandwidth Limiting determines the way in which the data is sent to/from your host. The purpose of bandwidth limiting is to provide a solution for limiting the outgoing/incoming traffic, thus preventing the LAN users for consuming all the bandwidth of our internet link. Bandwidth Limiting for outbound traffic will be done on the available WAN interface in the single port and Auto-Failover modes. The limiting will be done on the user-specified interface in Load Balancing mode. The bandwidth limiting for inbound traffic will be done on the LAN interface for all WAN modes. See “Creating Bandwidth Profiles” on page 4-22.

Note: Some residential broadband ISP accounts do not allow you to run any server

processes (such as a Web or FTP server) from your location. Your ISP may periodically check for servers and may suspend your account if it discovers any active services at your location. If you are unsure, refer to the Acceptable Use Policy of your ISP.

Remember that allowing inbound services opens holes in your VPN firewall. Enable only those ports that are necessary for your network. We also recommend enabling the server’s application security and configuring user password or privilege levels, if provided.

Firewall Protection and Content Filtering 4-7

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Viewing the Rules

To view the firewall rules: Select Security > Firewall from the menu. The LAN WAN Rules screen is displayed (Figure 4-1 shows some examples).

Figure 4-1

Order of Precedence for Rules

As you define new rules, they are added to the tables in the LAN WAN Rules screen as the last item in the table, as shown in Figure 4-1. For any traffic attempting to pass through the VPN firewall, the packet information is subjected to the rules in the order shown in the Outbound Services and Inbound Services rules tables, beginning at the top and proceeding to the bottom, before applying the default rule. In some cases, the order of precedence of two or more rules may be important in determining the disposition of a packet. For example, you should place the most strict rules at the top (those with the most specific services or addresses). The Up and Down buttons allow you to relocate a defined rule to a new position in the table.

Setting the Default Outbound Policy

The Default Outbound Policy is to allow all traffic to the Internet to pass through. Firewall rules can then be applied to block specific types of traffic from going out from the LAN to the Internet (Outbound). The default policy of Allow Always can be changed to block all outbound traffic which then allows you to enable only specific services to pass through the VPN firewall.

4-8 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

To change the default outbound policy, follow these steps:

1. Go to the LAN WAN Rules screen, shown in Figure 4-1 on page 4-8.

2. Change the Default Outbound Policy by selecting Block Always from the pull-down menu.

3. Click Apply.

Creating a LAN WAN Outbound Services Rule

An outbound rule will block or allow the selected application from an internal IP LAN address to an external WAN IP address according to the schedule created on the Schedule screen. You can also tailor these rules to your specific needs (see “Administrator Tips” on page 4-33).

Note: This feature is for advanced administrators only! Incorrect configuration will cause

serious problems.

To create a new outbound service rule in the LAN WAN Rules screen:

1. Click Add under the Outbound Services table. The Add LAN WAN Outbound Service screen

is displayed.

Figure 4-2

Firewall Protection and Content Filtering 4-9

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

2. Configure the parameters based on the descriptions in Table 4-1 on page 4-3.

3. Click Apply to save your changes and reset the fields on this screen. The new rule will be

listed on the Outbound Services table.

Creating a LAN WAN Inbound Services Rule

This Inbound Services table lists all existing rules for inbound traf fic. If you have not defined any rules, no rules will be listed. By default, all inbound traffic is blocked. Remember that allowing inbound services opens holes in your VPN firewall. Only enable those ports that are necessary for your network.

To create a new inbound service rule in the LAN WAN Rules screen:

1. Click Add under the Inbound Services table. The Add LAN WAN Inbound Service screen is

displayed.

Figure 4-3

2. Configure the parameters based on the descriptions in Table 4-2 on page 4-6.

3. Click Apply to save your changes and reset the fields on this screen. The new rule will be listed in the Inbound Services table.

4-10 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Modifying Rules

To make changes to an existing outbound or inbound service rule on the the LAN WAN Rules screen, in the Action column to the right of to the rule, click on of the following table buttons:

• edit. Allows you to make any changes to the rule definition of an existing rule. Depending on your selection, either the Edit LAN WAN Outbound Service screen (identical to Figure 4-2 on

page 4-9) or Edit LAN WAN Inbound Service screen (identical to Figure 4-3 on page 4-10) is

displayed, containing the data for the selected rule.

• up. Moves the rule up one position in the table rank.

• down. Moves the rule down one position in the table rank.

To enable, disable, or delete one or more rules:

1. Select the checkbox to the left of the rule that you want to delete or disable or click the select all table button to select all rules.

2. Click one of the following table buttons:

• enable. Enables the rule or rules. The “!” status icon changes from a grey circle to a green

circle, indicating that the rule is or rules are enabled. (By default, when a rule is added to the table, it is automatically enabled.)

• disable. Disables the rule or rules. The “!” status icon changes from a green circle to a

grey circle, indicating that the rule is or rules are disabled.

• delete. Deletes the rule or rules.

Inbound Rules Examples

LAN WAN Inbound Rule: Hosting a Local Public Web Server

If you host a public W e b server on your local network, you can define a rule to allow inbound Web (HTTP) requests from any outside IP address to the IP address of your Web server at any time of day. In the example shown in Figu re 4-4 on page 4-12 , unrestricted access is provided from the Internet to the local Web server at LAN IP address 192.168.1.99.

Firewall Protection and Content Filtering 4-11

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Figure 4-4

LAN WAN Inbound Rule: Allowing Videoconference from Restricted Addresses

If you want to allow incoming videoconferencing to be initiated from a restricted range of outside IP addresses, such as from a branch office, you can create an inbound rule. In the example shown in Figure 4-5, CU-SeeMe connections are allowed to a local host only from a specified range of external IP addresses. Connections are blocked during the period specified by Schedule 1.

Figure 4-5

4-12 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

LAN WAN Inbound Rule: Setting Up One-to-One NAT Mapping

If you arrange with your ISP to have more than one public IP address for your use, you can use the additional public IP addresses to map to servers on your LAN. One of these public IP addresses will be used as the primary IP address of the VPN firewall. This address will be used to provide Internet access to your LAN PCs through NAT. The other addresses are available to map to your servers.

In the example shown in Figure 4-6, we have configured multi-NAT to support multiple public IP addresses on one WAN interface. The inbound rule instructs the VPN firewall to host an additional public IP address (10.1.0.5) and to associate this address with the Web server on the LAN (at 192.168.1.1). We also instruct the VPN firewall to translate the incoming HTTP port number (port 80) to a different port number (port 8080).

Figure 4-6

The following addressing scheme is used in this example:

• VPN firewall FVS336G – WAN1 primary public IP address: 10.1.0.1 – WAN1 additional public IP address: 10.1.0.5 – LAN IP address 192.168.1.1

• Web server PC on the VPN firewall’s LAN – LAN IP address: 192.168.1.11 – Port number for Web service : 8080

Firewall Protection and Content Filtering 4-13

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

To test the connection from a PC on the WAN side, type http://10.1.0.5. The home page of the Web server should appear.

LAN WAN Inbound Rule: Specifying an Exposed Host

Specifying an exposed host allows you to set up a computer or server that is available to anyone on the Internet for services that you have not yet defined.

To expose one of the PCs on your LAN as this host:

1. Create an inbound rule that allows all protocols.

2. Place the new rule below all other inbound rules.

Note: For security, NETGEAR strongly recommends that you avoid creating an exposed

host. When a computer on your LAN is designated as the exposed host, it loses much of the protection of the firewall and is exposed to many exploits from the Internet. If compromised, the computer can be used to attack your network.

Outbound Rules Example

Outbound rules let you prevent users from using applications such as Instant Messenger, Real Audio, or other non-essential services.

LAN WAN Outbound Rule: Blocking Instant Messenger

To block Inst ant Messenger usage by employees during working hours, you can create an outbound rule to block that application from any internal IP address to any external address according to the schedule that you have created on the Schedule screen. See the example shown in

Figure 4-7 on page 4-1 5.

You can also have the VPN firewall log any attempt to use Instant Messenger during that blocked period.

4-14 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Figure 4-7

Configuring Other Firewall Features

You can configure attack checks, set session limits, and manage the Application Level Gateway (ALG) for SIP sessions.

Attack Checks

The Attack Checks screen allows you to specify whether or not the VPN firewall should be protected against common attacks in the LAN and WAN networks. To enable the appropriate Attack Checks for your environment:

1. Select Security > Firewall from the menu and click Attack Checks to display the Attack Checks screen (see Figure 4-8 on page 4-16).

2. Check the boxes for the Attack Checks you wish to monitor. The various types of attack checks are listed and defined below.

3. Click Apply to save your settings.

Firewall Protection and Content Filtering 4-15

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Figure 4-8

The various types of attack checks listed on the Attack Checks screen are:

• WAN Security Checks

– Respond To Ping On Internet Ports. By default, the VPN firewall responds to an ICMP

Echo (ping) packet coming from the Internet or WAN side. Responding to a ping can be a useful diagnostic tool when there are connectivity problems. If the ping option is enabled, you can allow either any IP address or a specific IP address only to respond to a ping. You can disable the ping option to prevent hackers from easily discovering the VPN firewall via a ping.

– Enable Stealth Mode. In stealth mode, the VPN firewall will not respond to port scans

from the WAN or Internet, which makes it less susceptible to discovery and attacks.

– Block TCP Flood. A SYN flood is a form of denial of service attack in which an attacker

sends a succession of SYN requests to a target system. When the system responds, the attacker does not complete the connection, thus saturating the server with half-open connections. No legitimate connections can then be made.

When blocking is enabled, the VPN firewall will limit the lifetime of partial connections and will be protected from a SYN flood attack.

4-16 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

• LAN Security Checks.

– Block UDP flood. A UDP flood is a form of denial of service attack in which the

attacking machine sends a large number of UDP packets to random ports to the victim host. As a result, the victim host will check for the application listening at that port, see that no application is listening at that port, and reply with an ICMP Destination Unreachable packet.

When the victimized system is flooded, it is forced to send many ICMP packets, eventually making it unreachable by other clients. The attacker may also spoof the IP address of the UDP packets, ensuring that the excessive ICMP return packets do not reach him, making the attacker’s network location anonymous.

If flood checking is enabled, the VPN firewall will not accept more than 20 simultaneous, active UDP connections from a single computer on the LAN.

– Disable Ping Reply on LAN Ports. To prevent the VPN firewall from responding to ping

requests from the LAN, click this checkbox.

• VPN Pass through. When the VPN firewall is in NAT mode, all packets going to the Remote VPN Gateway are first filtered through NAT and then encrypted per the VPN policy.

If a VPN client or gateway on the LAN side of the VPN firewall wants to connect to another VPN endpoint on the WAN, with the VPN firewall between the two VPN end points, all encrypted packets will be sent to the VPN firewall. Since the VPN firewall filters the encrypted packets through NAT, the packets become invalid.

IPSec, PPTP, and L2TP represent different types of VPN tunnels that can pass through the VPN firewall. T o allow the VPN traffic to pass through without filtering, enable those options for the type of tunnel(s) that will pass through the VPN firewall.

Configuring Session Limits

To prevent one user or group from using excessive system resources, you can limit the total number of IP sessions allowed through the VPN firewall for an individual or group. You can specify the maximum number of sessions by either a percentage of maximum sessions or an absolute number of maximum sessions. Session limiting is disabled by default.

Firewall Protection and Content Filtering 4-17

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

To configure session limits:

1. Select Security > Firewall > Session Limit to display the Session Limit screen.

Figure 4-9

2. Click Yes to enable Session Limits.

3. From the pull-down menu, select whether you will limit sessions by percentage or by absolute

number. The percentage is computed based on the total connection capacity of the device. When setting a limit based on absolute number, note that some protocols (for example, FTP and RSTP) create two sessions per connection.

4. Click Apply.

To monitor session limiting, return to this screen periodically and check the display of Total Number of Packets Dropped due to Session Limit, which indicates that session limits have been reached.

Managing the Application Level Gateway for SIP Sessions

The Application Level Gateway (ALG) facilitates multimedia sessions such as voice over IP (VoIP) sessions that use the Session Initiation Protocol (SIP) across the firewall and provides support for multiple SIP clients. ALG support for SIP is disabled by default.

4-18 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

To enable ALG for SIP:

1. Select Security > Firewall > Advanced to display the Advanced screen.

Figure 4-10

2. Select the Enable SIP ALG checkbox.

3. Click Apply to save your settings.

Creating Services, QoS Profiles, and Bandwidth Profiles

When you create inbound and outbound firewall rules, you use firewall objects such as services, QoS profiles, bandwidth profiles, and schedules to narrow down the firewall rules:

• Services. A service narrows down the firewall rule to an application and a port number. For information about adding services, see “Adding Customized Services” on page 4-19.

• QoS profiles. A quality of service (QoS) profile defines the relative priority of an IP packet for traffic that matches the firewall rule. For information about creating QoS profiles, see

“Setting Quality of Service (QoS) Priorities” on page 4-21.

• Bandwidth Profiles. A bandwidth profile allocates and limits traffic bandwidth for the LAN users to which a firewall rule is applied. For information about creating bandwidth profiles, see “Creating Bandwidth Profiles” on page 4-22.

Note: A schedule narrows down the period during which a firewall rule is applied. For

information about specifying schedules, see “Setting a Schedule to Block or Allow

Specific Traffic” on page 4-24.

Adding Customized Services

Services are functions performed by server computers at the request of client computers. For example, Web servers serve Web pages, time servers serve time and date information, and game hosts serve data about other players’ moves. When a computer on the Internet sends a request for

Firewall Protection and Content Filtering 4-19

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

service to a server computer, the requested service is identified by a service or port number. This number appears as the destination port number in the transmitted IP packets. For example, a packet that is sent with destination port number 80 is an HTTP (Web server) request.

The service numbers for many common protocols are defined by the Internet Engineering Task Force (IETF) and published in RFC1700, “Assigned Numbers.” Service numbers for other applications are typically chosen from the range 1024 to 65535 by the authors of the application.

Although the VPN firewall already holds a list of many service port numbers, you are not limited to these choices. Use the Services screen to add additional services and applications to the list for use in defining firewall rules. The Services screen shows a list of services that you have defined, as shown in Figure 4-11.

To define a new service, you must first determine which port number or range of numbers is used by the application. This information can usually be determined by contacting the publisher of the application or from user groups or newsgroups. When you have the port number information, you can enter it on the Services screen. You can configure up to 125 custom services.

To add a custom service:

1. Select Security > Services from the menu. The Services screen is displayed.

Figure 4-11

2. In the Add Custom Services section, enter a descriptive name for the service (this name is for your convenience).

3. Select the Layer 3 transport protocol of the service: TCP, UDP, or ICMP.

4. For TCP or UDP services, enter the first port of the range that the service uses. For ICMP

services, enter the ICMP Type number.

5. For TCP or UDP services, enter the last port of the range that the service uses. If the service only uses a single port number, enter the same number in both fields.

4-20 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

6. Click Add. The new custom service will be added to the Custom Services Table.

Modifying a Service

To edit the parameters of an existing service:

1. In the Custom Services Table, click the Edit button adjacent to the service you want to edit. The Edit Service screen is displayed.

2. Modify the parameters you wish to change.

3. Click Apply to confirm your changes. The modified service is displayed in the Custom

Services Table.

Setting Quality of Service (QoS) Priorities

The QoS setting determines the priority of a service, which in turn determines the quality of that service for the traffic passing through the VPN firewall. You can change the QoS Priority:

• On the Services screen in the Custom Services Table for customized services (see

Figure 4-11 on page 4-20).

• On the Add LAN WAN Outbound Services screen.

Figure 4-12

Firewall Protection and Content Filtering 4-21

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

The QoS priority definition for a service determines the queue that is used for the traffic passing through the VPN firewall. A priority is assigned to IP packets using this service. Priorities are defined by the “Type of Service (ToS) in the Internet Protocol Suite” standards, RFC 13 49. A ToS priority for traffic passing through the VPN firewall is one of the following:

• Normal-Service. No special priority given to the traffic. The IP packets for services with this priority are marked with a ToS value of 0.

• Minimize-Cost. Used when the data must be transferred over a link that has a low transmission cost. The IP packets for this service priority are marked with a ToS value of 1.

• Maximize-Reliability. Used when data needs to travel to the destination over a reliable link with little or no retransmission. The IP packets for this service priority are marked with a ToS value of 2.

• Maximize-Throughput. Used when the volume of data transferred during an interval is important even if the latency over the link is high. The IP packets for services with this priority are marked with a ToS value of 4.

• Minimize-Delay. Used when the time required for the packet to reach the destination must be short (low link latency). The IP packets for this service priority are marked with a ToS value of 8.

Creating Bandwidth Profiles

To prevent one user or group from using excessive inbound or outbound bandwidth, you can define a bandwidth profile to set a minimum and maximum bandwidth for an individual or group. You can apply a defined profile in a firewall rule to limit specific protocols or all traffic (see

“Using Rules to Block or Allow Specific Kinds of Traffic” on page 4-2).

To create a bandwidth profile:

1. Select Security > Bandwidth Profile from the menu. The Bandwidth Profile screen is displayed.

Figure 4-13

4-22 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

The List of Bandwidth Profiles table displays existing profiles.

2. T o create a new bandwidth profile, click Add. The Add Bandwidth Profile screen is displayed.

Figure 4-14

3. Enter the following information: a. Enter a Profile Name. This name will become available in the firewall rules definition

menus.

b. From the Direction pull-down box, select whether the profile will apply to outbound,

inbound, or both outbound and inbound traffic.

c. Depen din g on the direction that you selected, enter the minimum and maximum

bandwidths to be allowed:

• Enter the Outbound Minimum Bandwidth and Outbound Maximum Bandwidth

in Kbps.

• Enter the Inbound Minimum Bandwidth and Inbound Maximum Bandwidth in

Kbps.

The minimum bandwidth can range from 0 Kbps to the maximum bandw idth that you specify. The maximum bandwidth can range from 100 Kbps to 100,000 Kbps.

d. From the Type pull-down box, select whether the profile will apply to a group or

individual.

e. From the WAN pull-down box, specify the WAN interface (if in Load Balancing Mode)

for the profile.

Firewall Protection and Content Filtering 4-23

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

4. Click Apply. The new bandwidth profile will be added to the List of Bandwidth Profiles table.

To edit a bandwidth profile:

1. Click the Edit link adjacent to the profile you want to edit. The Edit Bandwidth Profile screen is displayed. (This screen shows the same fields as the Add New Bandwidth Profile screen.)

2. Modify the settings that you wish to change.

3. Click Apply. Yo ur modified profile is displayed in the Bandwidth Profile table.

To remove an entry from the table, select the profile and click delete. To remove all the profiles, click select All and then click delete.

Setting a Schedule to Block or Allow Specific Traffic

Schedules define the timeframes under which firewall rules may be applied.

Figure 4-15

Three schedules, Schedule 1, Schedule 2 and Schedule3 can be defined, and any one of these can be selected when defining firewall rules.

4-24 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

To invoke rules based on a schedule, follow these steps:

1. Select Security > Schedule to display the Schedule 1 screen.

2. Check the radio button for All Days or Specific Days. If you chose Specific Days, check the

radio button for each day you want the schedule to be in effect.

3. Check the radio button to schedule the time of day: All Day, or Specific Times. If you chose Specific Times, enter the Start Time and End Time fields (Hour, Minute, AM/PM), which

will limit access during certain times for the selected days.

4. Click Apply to save your settings to Schedule 1.

5. Repeat these steps to set to a schedule for Schedule 2 and Schedule 3.

Blocking Internet Sites (Content Filtering)

To restrict internal LAN users from access to certain sites on the Internet, you can use the VPN firewall’s Content Filtering and Web Components filtering. By default, these features are disabled; all requested traffic from any website is allowed. If you enable one or more of these features and users try to access a blocked site, they will see a “Blocked by NETGEAR” message.

Several types of blocking are available:

• Web Componen ts blocking. You can filter the following Web Component types: Proxy, Java, ActiveX, and Cookies. For example, by enabling Java filtering, “Java” files will be blocked. Certain commonly used web components can be blocked for increased security. Some of these components are can be used by malicious Websites to infect computers that access them.

– Proxy. A proxy server (or simply, proxy) allows computers to route connections to other

computers through the proxy, thus circumventing certain firewall rules. For example, if connections to a specific IP address are blocked by a firewall rule, the requests can be routed through a proxy that is not blocked by the rule, rendering the restriction ineffective. Enabling this feature blocks proxy servers.

– Java. Blocks java applets from being downloaded from pages that contain them. Java

applets are small programs embedded in web pages that enable dynamic functionality of the page. A malicious applet can be used to compromise or infect computers. Enabling this setting blocks Java applets from being downloaded.

– ActiveX. Similar to Java applets, ActiveX controls install on a Windows computer

running Internet Explorer. A malicious ActiveX control can be used to compromise or infect computers. Enabling this setting blocks ActiveX applets from being downloaded.

Firewall Protection and Content Filtering 4-25

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

– Cookies. Cookies are used to store session information by websites that usually require

login. However, several websites use cookies to store tracking information and browsing habits. Enabling this option filters out cookies from being created by a website.

Note: Many websites require that cookies be accepted in order for the site to be

accessed properly. Blocking cookies may interfere with useful functions provided by these websites.

• Keyword Blocking (Domain Name Blocking). You can specify up to 32 words that, should they appear in the website name (URL) or in a newsgroup name, will cause that site or newsgroup to be blocked by the VPN firewall.

You can apply the keywords to on e or more groups. Requests from the PCs in the groups for which keyword blocking has been enabled will be blocked. Blocking does not occur for the PCs that are in the groups for which keyword blocking has not been enabled.

You can bypass Keyword blocking for trusted domains by adding the exact matching domain to the Trusted Domains table. Access to the domains or keywords in the Trusted Domains table by PCs, even those in the groups for which keyword blocking has been enabled, will still be allowed without any blocking.

Keyword application examples:

• If the keyword “XXX” is specified, the URL <http://www.badstuff.com/xxx.html> is blocked, as is the newsgroup alt.pictures.XXX.

• If the keyword “.com” is specified, only websites with other domain suffixes (such as .edu or .gov) can be viewed.

• To block all Internet browsing access, enter the keyword “.”.

4-26 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

To enable Content Filtering:

1. Select Security > Block Sites to display the Block Sites screen.

Figure 4-16

2. Select Yes to enable content filtering.

3. Click Apply to activate the screen controls.

Firewall Protection and Content Filtering 4-27

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

4. Select any Web Compo nents you wish to block and click Apply.

5. Select the groups to which keyword blocking will apply, then click Enable to activate

keyword blocking (or disable to deactivate keyword blocking).

6. Enter your list of blocked keywords or domain names in the Blocked Keyword fields. After each entry , click Add. The keyword or domain name will be added to the Blocked Keywords table. (You can also edit an entry by clicking Edit in the Action column adjacent to the entry.)

7. In the Add T rusted Domain section of the screen, enter the name(s) of any domain for which the keyword filtering will be bypassed and click Add. The trusted domain will appear in the Trusted Domains table and will be exempt from filtering.

Configuring Source MAC Filtering

Source MAC filtering will drop or allow the Internet-bound traffic received from PCs with specified MAC addresses.

• By default, the source MAC address filter is disabled. Traffic received from any MAC address is allowed.

• When the source MAC address filter is enabled, outbound Internet traffic will be filtered using the MAC Addresses table on this screen. You can choose to block MAC addresses in the table or to allow only those addresses in the table.

Note: For additional ways of restricting outbound traffic, see “Outbound Rules

(Service Blocking)” on page 4-3

To enable MAC filtering and add MAC addresses to be blocked:

1. Select Security > Address Filter from the menu.

2. Select the Source MAC Filter tab to display the Source MAC Filter screen (see Figure 4-17

on page 4-29).

4-28 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Figure 4-17

3. Click Yes to enable Source MAC Filtering.

4. Select the action to be taken on outbound traffic from the listed MAC addresses:

– Block this list and permit all other MAC addresses. – Permit this list and block all other MAC addresses.

5. Enter a MAC Address in the Add Source MAC Address checkbox and click Add. The MAC address will appear in the MAC Addresses table. Repeat this process to add additional MAC addresses.

A valid MAC address is six colon-separated pairs of hexadecimal digits (0 to 9 and a to f). For example: 01:23:45:ab:cd:ef.

6. Click Apply to save your settings.

You can edit the MAC address by clicking Edit in the Action column adjacent to the MAC address.

To remove an entry from the table, select the MAC address entry and click Delete. T o select all the list of MAC addresses, click Select All. A checkmark will appear in the box to the

left of each MAC address in the MAC Addresses table

Firewall Protection and Content Filtering 4-29

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Configuring IP/MAC Address Binding

You can configure the VPN firewall to drop packets and generate an alert when a device appears to have hijacked or spoofed another device’s IP address. An IP address can be bound to a specific MAC address either by using a DHCP reserved address (see “Configuring DHCP Address

Reservation” on page 3-9) or by manually binding on the IP/MAC Binding screen.

To enable IP/MAC address binding enforcement and alerts:

1. Select Security > Address Filter from the menu.

2. Select the IP/MAC Binding tab to display the Source MAC Filter screen.

Figure 4-18

3. In the Email IP/MAC Violations section of the screen, check the Yes radio button to enable IP/MAC address binding enforcement and alerts. E-mail alerts must be enabled (see “E-Mail

Notifications of Event Logs and Alerts” on page 4-33).

4. Click Apply.

5. To add a manual binding entry, enter the following data in the Add IP/MAC Bindings

section: a. Enter a Name for the bound host device.

4-30 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

b. Enter the MAC Address and IP Address to be bound. A valid MAC address is six colon-

separated pairs of hexadecimal digits (0 to 9 and a to f). For example: 01:23:45:ab:cd:ef.

c. From the pull-down list, select whether dropped packets should be logged to a special

counter.

6. Click Apply. The specified binding will be added to the IP/MAC Bindings table.

To see the counter that shows the packets that were dropped because of IP-MAC binding violations and to set the poll interval, click the Set Poll Interval link at the top of the IP/MAC Binding screen.

Configuring Port Triggering

Port triggering allows some applications to function correctly that would otherwise be partially blocked by the VPN firewall when it functions in NAT mode. Some applications require that when external devices connect to them, they receive data on a specific port or range of ports. The VPN firewall must send all incoming data for that application only on the required port or range of ports. Using this feature requires that you know the port numbers used by the application.

Port triggering allows computers on the private network (LAN) to request that one or more ports be forwarded to them. Unlike basic port forwarding which forwards ports to only one preconfigured IP address, port triggering waits for an outbound request from the private network on one of the defined outgoing ports. It then automatically sets up forwarding to the IP address that sent the request. When the application ceases to transmit data over the port, the VPN firewall waits for a timeout interval and then closes the port or range of ports, making them available to other computers on the private network.

Once configured, port triggering operates as follows:

1. A PC makes an outgoing connection using a port number defined in the Port Triggering table.

2. The VPN firewall records this connection, opens the additional incoming port or ports associated with this entry in the Port Triggering table, and associates them with the PC.

3. The remote system receives the PC’s request and responds using the different port numbers that you have now opened.

4. The VPN firewall matches the response to the previous request, and forwards the response to the PC.

Without port triggering, this response would be trea ted as a new connection request rather than a response. As such, it would be handled in accordance with the inbound service rules.

Firewall Protection and Content Filtering 4-31

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Note these restrictions with port triggering:

• Only one PC can use a port triggering application at any time.

• After a PC has finished using a port triggering application, there is a time-out period before the application can be used by another PC. This is required because the VPN firewall cannot be sure when the application has terminated.

Note: For additional ways of allowing inbound traffic, see “Inbound Rules (Port

Forwarding)” on page 4-5.

To add a port triggering rule:

1. Select Security > Port Triggering to display the Port Triggering screen.

Figure 4-19

2. Enter a user-defined name for this rule in the Name field.

3. From the Enable pull-down menu, indicate if the rule is enabled or disabled.

4. From the Protocol pull-down menu, choose either TCP or UDP transport protocol.

5. In the Outgoing (Trigger) Port Range fields: a. Enter the Start Port range (1 - 65534). b. Enter the End Port range (1 - 65534).

6. In the Incoming (Response) Port Range fields: a. Enter the Start Port range (1 - 65534). b. Enter the End Port range (1 - 65534).

4-32 Firewall Protection and Content Filtering

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

7. Click Add. The port triggering rule will be added to the Port Triggering Rules table.

T o check the status of the port triggering rules, click t he Status option arrow to the right of the tab on the Port Triggering screen. The following data is displayed:

• Rule – The name of the port triggering rule.

• LAN IP Address – The IP address of the PC currently using this rule.

• Open Ports – The incoming ports associated with this rule. Incoming traffic using these ports will be sent to the LAN IP address above.

• Time Remaining – The time remaining before this rule is released, and thus available for other PCs. The timer is reset whenever incoming or outgoing traffic is received.

E-Mail Notifications of Event Logs and Alerts

The firewall logs can be configured to log and then e-mail denial of access, general attack information, and other information to a specified e-mail address. For example, your VPN firewall will log security-related events such as: accepted and dropped packets on different segments of your LAN; denied incoming and outgoing service requests; hacker probes and login attempts; and other general information based on the settings that you enter on the Firewall Logs & E-mail screen. In addition, if you have set up content filtering on the Block Sites screen (see “Blocking

Internet Sites (Content Filtering)” on page 4-25), a log will be generated when someone on your

network tries to access a blocked site. To configure e-mail or syslog notification, or to view the logs, see “Activating Notification of

Events and Alerts” on page 9-4.

Administrator Tips

Consider the following operational items:

• As an option, you can enable remote management if you have to manage distant sites from a central location (see “Enabling Remote Management Access” on page 8-10).

• Although rules (see “Using Rules to Block or Allow Specific Kinds of Traffic” on page 4-2) are the basic way of managing the traffic through your system, you can further refine your control with the following optional features of the VPN firewall:

– Groups and hosts (see “Managing Groups and Hosts (LAN Groups)” on page 3-6) – Services (see “About Services-Based Rules” on page 4-3)

Firewall Protection and Content Filtering 4-33

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

– Schedules (see “Setting a Schedule to Block or Allow Specific Traffic” on page 4-24) – Block sites (see “Blocking Internet Sites (Content Filtering)” on page 4-25) – Source MAC filtering (see “Configuring Source MAC Filtering” on page 4-28) – Port triggering (see “Configuring Port Triggering” on page 4-31)

4-34 Firewall Protection and Content Filtering

v1.0, January 2010

Chapter 5

Virtual Private Networking Using IPsec

This chapter describes how to use the IPsec virtual private networking (VPN) features of the ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G to provide secure, encrypted communications between your local network and a remote network or computer.

This chapter contains the following sections:

• “Considerations for Dual WAN Port Systems” on this page

• “Using the VPN Wizard for Client and Gateway Configurations” on page 5-3

• “Testing the Connections and Viewing Status Information” on page 5-12

• “Managing VPN Policies” on page 5-15

• “Configuring Extended Authentication (XAUTH)” on page 5-19

• “Assigning IP Addresses to Remote Users (ModeConfig)” on page 5-24

• “Configuring Keepalives and Dead Peer Detection” on page 5-32

• “Configuring NetBIOS Bridging with VPN” on page 5-34

Considerations for Dual WAN Port Systems

If both of the WAN ports of the VPN firewall are configured, you can enable either Auto-Rollover mode for increased system reliability or Load Balancing mode for optimum bandwidth efficiency. This WAN mode choice impacts how the VPN features must be configured.

The use of fully qualified domain names in VPN policies is mandatory when the WAN ports are in load balancing or rollover mode; and is also required for the VPN tunnels to fail over. FQDN is optional when the WAN ports are in load balancing mode if the IP addresses are static but mandatory if the WAN IP addresses are dynamic.

Refer to “Virtual Private Networks (VPNs)” on page B-9 for more on the IP addressing requirements for VPN in the dual WAN modes. For instructions on how to select and configure a dynamic DNS service for resolving FQDNs, see “Configuring Dynamic DNS (Optional)” on

page 2-16. For instructions on WAN mode configuration, see “Configuring the WAN Mode (Required for Dual WAN)” on page 2-11.

5-1

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Rest of

Firewall

Functions

Firewall WAN Port Functions

Firewall Rollover

Control

Firewall

WAN 1 Port

WAN 2 Port

Internet

Same FQDN required for both WAN ports

WAN Auto-Rollover: FQDN Required for VPN

Rest of

Firewall

Functions

Firewall WAN Port Functions

Load

Balancing

Control

Firewall

WAN 1 Port

WAN 2 Port

Internet

FQDN required for dynamic IP addresses

WAN Load Balancing: FQDN Optional for VPN

FQDN optional for static IP addresses

The diagrams and table below show how the WAN mode selection relates to VPN configuration.

Figure 5-1

Figure 5-2

Table 5-1 summariz es the WAN addressing requirements (FQDN or IP address) for your VPN

tunnel in either dual WAN mode.

Table 5-1. IP Addressing for VPNs in Dual WAN Port Systems

Configuration and WAN IP address Rollover Mode

VPN Road Warrior (client-to-gateway)

VPN Gateway-to-Gateway Fixed FQDN required FQDN Allowed (optional)

VPN Telecommuter (client-to-gateway through a NAT router)

a. All tunnels must be re-established after a rollover using the new WAN IP address.

5-2 Virtual Private Networking Using IPsec

Fixed FQDN required FQDN Allowed (optional) Dynamic FQDN required FQDN required

Dynamic FQDN required FQDN required Fixed FQDN required FQDN Allowed (optional) Dynamic FQDN required FQDN required

v1.0, January 2010

Load Balancing Mode

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Using the VPN Wizard for Client and Gateway Configurations

You use the VPN Wizard to configure multiple gateway or client VPN tunnel policies. The section below provides wizard and NETGEAR VPN Client configuration procedures for the

following scenarios:

• Using the wizard to configure a VPN tunnel between 2 VPN gateways

• Using the wizard to configure a VPN tunnel between a VPN gateway and a VPN client Configuring a VPN tunnel connection requires that all settings and parameters on both sides of the

VPN tunnel match or mirror each other precisely, which can be a daunting task. The VPN Wizard efficiently guides you through the setup procedure with a series of questions that will determine the IPsec keys and VPN policies it sets up. The VPN Wizard will also set the parameters for the network connection: Security Association, traffic selectors, authentication algorithm, and encryption. The parameters used by the VPN wizard are based on the recommendations of the VPN Consortium (VPNC), an organization that promotes multi-vendor VPN interoperability.

Creating Gateway to Gateway VPN Tunnels with the Wizard

Figure 5-3

Follow these steps to set up a gateway VPN tunnel using the VPN Wizard.

1. Select VPN > IPsec VPN from the menu.

2. Click the VPN Wizard tab to display the VPN Wizard screen (see Figure 5-4 on page 5-4).

To view the wizard default settings, click the VPN Wizard Default Values link. You can modify these settings after completing the wizard.

Virtual Private Networking Using IPsec 5-3

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

Figure 5-4

3. Select Gateway as your connection type.

4. Create a Connection Name. Enter a descriptive name for the connection. This name used to

help you manage the VPN settings; is not supplied to the remote VPN endpoint.

5. Enter a Pre-shared Key. The key must be entered both here and on the remote VPN gateway,

or the remote VPN client. This key must be a minimum of 8 characters and should not exceed 49 characters.

6. Choose which WAN port to use as the VPN tunnel end point.

Note: If you are using a dual WAN rollover configuration, after completing the

wizard, you must manually update the VPN policy to enable VPN rollover. This allows the VPN tunnel to roll over when the WAN Mode is set to Auto Rollover. The wizard will not set up the VPN policy with rollover enabled.

5-4 Virtual Private Networking Using IPsec

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

7. Enter the Remote and Local WAN IP Addresses or Internet Names of the gateways which

will connect.

• Both the remote WAN address and your local WAN address are required.

Tip: T o assure tunnels stay active, after completing the wizard, manually edit the

VPN policy to enable keepalive which periodically sends ping packets to the host on the peer side of the network to keep the tunnel alive.

• The remote WAN IP address must be a public address or the Internet name of the remote gateway. The Internet name is the Fully Qualifi ed Domain Name (FQDN) as registered in a Dynamic DNS service. Both local and remote endpoints should be defined as either FQDN or IP addresses. A combination of IP address and FQDN is not allowed.

Tip: For DHCP WAN configurations, first, set up the tunnel with IP addresses.

Once you validate the connection, use the wizard to create new policies using FQDN for the WAN addresses.

8. Enter the local LAN IP and Subnet Mask of the remote gateway in the Remote LAN IP Address and Subnet Mask fields.

Note: The Remote LAN IP address must be in a different subnet than the Local LAN

IP address. For example, if the local subnet is 192.168.1.x, then the remote subnet could be 192.168.10.x. but could not be 19 2.168.1.x. If this informatio n is incorrect, the tunnel will fail to connect.

9. Click Apply to save your settings. The VPN Policies screen shows that the policy is enabled.

Figure 5-5

Virtual Private Networking Using IPsec 5-5

v1.0, January 2010

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual

10. If you are connecting to another NETGEAR VPN firewall, use the VPN Wizard to configure the second VPN firewall to connect to the one you just configured.

After both firewalls are configured, go to VPN > IPsec VPN > Connection Status to display the status of your VPN connections.

Figure 5-6

The tunnel will automatically establish when both the local and target gateway policies are appropriately configured and enabled,

Note: When using FQDN, if the dynamic DNS service is slow to update their servers

when your DHCP WAN address changes, the VPN tunnel will fail because the FQDN does not resolve to your new address. If you have the option to configure the update interval, set it to an appropriately short time.

Creating a Client to Gateway VPN Tunnel

Figure 5-7

5-6 Virtual Private Networking Using IPsec

v1.0, January 2010

Netgear FVS336G Reference Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

About This Manual

Conventions, Formats, and Scope

How to Print This Manual

Revision History

Key Features

Dual WAN Ports for Increased Reliability or Outbound Load Balancing

Advanced VPN Support for Both IPsec and SSL

A Powerful, True Firewall with Content Filtering

Autosensing Ethernet Connections with Auto Uplink

Extensive Protocol Support

Easy Installation and Management

Maintenance and Support

Package Contents

Front Panel Features

Rear Panel Features

Default IP Address, Login Name, and Password Location

Qualified Web Browsers

Understanding the Connection Steps

Logging into the VPN Firewall

Navigating the Menus

Configuring the Internet Connections

Automatically Detecting and Connecting

Manually Configuring the Internet Connection

Configuring the WAN Mode (Required for Dual WAN)

Network Address Translation

Classical Routing

Configuring Auto-Rollover Mode

Configuring Load Balancing

Protocol binding

Configuring Dynamic DNS (Optional)

Configuring the Advanced WAN Options (Optional)

Additional WAN Related Configuration

Choosing the VPN Firewall DHCP Options

Configuring the LAN Setup Options

Managing Groups and Hosts (LAN Groups)

Viewing the LAN Group s Database

Adding Devices to the LAN Groups Database

Changing Group Names in the LAN Groups Database

Configuring DHCP Address Reservation

Configuring Multi Home LAN IP Addresses

Configuring Static Routes

Configuring Routing Information Protocol (RIP)

About Firewall Protection and Content Filtering

Using Rules to Block or Allow Specific Kinds of Traffic

About Services-Based Rules

Outbound Rules (Service Blocking)

Inbound Rules (Port Forwarding)

Viewing the Rules

Order of Precedence for Rules

Setting the Default Outbound Policy

Creating a LAN WAN Outbound Services Rule

Creating a LAN WAN Inbound Services Rule

Modifying Rules

Inbound Rules Examples

LAN WAN Inbound Rule: Hosting a Local Public Web Server

LAN WAN Inbound Rule: Allowing Videoconference from Restricted Addresses

LAN WAN Inbound Rule: Setting Up One-to-One NAT Mapping

LAN WAN Inbound Rule: Specifying an Exposed Host

Outbound Rules Example

LAN WAN Outbound Rule: Blocking Instant Messenger

Configuring Other Firewall Features

Attack Checks

Configuring Session Limits

Managing the Application Level Gateway for SIP Sessions

Creating Services, QoS Profiles, and Bandwidth Profiles

Adding Customized Services

Modifying a Service

Setting Quality of Service (QoS) Priorities

Creating Bandwidth Profiles

Setting a Schedule to Block or Allow Specific Traffic

Blocking Internet Sites (Content Filtering)

Configuring Source MAC Filtering

Configuring IP/MAC Address Binding

Configuring Port Triggering

E-Mail Notifications of Event Logs and Alerts