NETGEAR RT311, RT314 User Manual

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Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

NETGEAR,Inc.

4500 Great America Parkway Santa Clara, CA 95054 USA Phone 1-888-NETGEAR

SM-RT311NA-5 July 2001

Trademarks

NETGEAR and FirstGear are trademarks Netgear, Inc. Microsoft, Windows, and Windows NT are 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/orreliability, NETGEAR reserves the rightto 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 instructions, may cause harmful 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.

EN 55 022 Declaration of Conformance

This is to certify that the Model RT311 and RT314 Internet Access Gateway Routers are shielded against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, A rticle 4a. Conformity is declared by the application of EN 55 022 Class B (CISPR 22).

Bestätigung des Herstellers/Importeurs

Es wird hiermit bestätigt, daß das Model RT311 and RT314 Internet Access Gateway Routers gemäß der im BMPT-AmtsblVfg 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 Anmerkungenin 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 Model RT311 and RT314Internet Access Gateway Routers have 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, however, 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.

Customer Support

Refer to the Support Information Card that shipped with your Model RT311 or RT314 Internet Access Gateway Router.

World Wide Web

NETGEAR maintains a World Wide Web home page that you can access at the universal resource locator (URL) http://www.netgear.com. A direct connection to the Internet and a Web browser such as Internet Explorer or Netscape are required.

iii

About This Guide

Technical Support ............................................................................................................ xv

Related Publications ........................................................................................................ xv

Typographical Conventions ............................................................................................xvii

Special Message Formats ..............................................................................................xvii

Chapter 1 Introduction

About the Router ............................................................................................................1-1

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

Autosensing 10/100 Ethernet ...................................................................................1-3

TCP/IP ......................................................................................................................1-3

Security ....................................................................................................................1-4

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

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

Chapter 2 SettingUptheHardware

Package Contents ..........................................................................................................2-1

Local Network Hardware Requirements .........................................................................2-2

PC Requirements ..............................................................................................2-2

Access Device Requirement .............................................................................2-2

The Router’s Front Panel ...............................................................................................2-3

The Router’s Rear Panel ................................................................................................2-5

Connecting the Router ....................................................................................................2-6

Connecting to your Local Ethernet Network .............................................................2-6

Connecting the Model RT311 router to your Local Area Network .....................2-6

Connecting the Model RT314 router to your Local Area Network .....................2-6

Connecting to Your Internet Access Device .............................................................2-7

Connecting the Serial Cable (Optional) ....................................................................2-7

Connecting the Power Adapter ................................................................................2-8

Contents v

Verifying Power ........................................................................................................2-8

Chapter 3 Preparing Your Network

Preparing Your Personal Computers for IP Networking .................................................3-1

Configuring Windows 95 or later for IP Networking ........................................................3-2

Configuring TCP/IP Properties .................................................................................3-4

Verifying TCP/IP Properties (Windows) ...................................................................3-4

Configuring the Macintosh for IP Networking .................................................................3-5

Verifying TCP/IP Properties (Macintosh) ..................................................................3-6

Your Internet Account .....................................................................................................3-7

Login Protocols ........................................................................................................3-7

Account Information .................................................................................................3-7

Obtaining ISP Configuration Information (Windows) .........................................3-8

Obtaining ISP Configuration Information (Macintosh) .......................................3-9

Ready for Configuration ................................................................................................3-10

Chapter 4 Initial Configuration of the Router

Configuring for Internet Access ......................................................................................4-1

Chapter 5 Advanced Configuration of the Router

System Settings ..............................................................................................................5-1

System Tab ..............................................................................................................5-1

Dynamic DNS ...........................................................................................................5-2

Password .................................................................................................................5-2

LAN Setup ......................................................................................................................5-3

DHCP .......................................................................................................................5-3

LAN TCP/IP ..............................................................................................................5-4

Configuring for Port Forwarding to Local Servers ..........................................................5-6

Local Web and FTP Server Example ................................................................5-7

Local Game Host or Videoconference Example ................................................5-8

Static Routes ..................................................................................................................5-8

Static Route Example .............................................................................................5-10

Chapter 6 Maintenance

System Status .................................................................................................................6-1

DHCP Table ....................................................................................................................6-4

vi Contents

Software Upgrade ...........................................................................................................6-4

Configuration File Management .....................................................................................6-5

Restore and Backup the Configuration ....................................................................6-5

Erase the Configuration ...........................................................................................6-5

Chapter 7 Using the Manager Interface for Initial Router Configuration

Connecting for Configuration ..........................................................................................7-1

Connecting Through a Serial Port ............................................................................7-2

Connecting Through a Telnet Connection ................................................................7-2

Using the Manager Interface ..........................................................................................7-4

Turning on Power to the Router ...............................................................................7-4

Navigating the Manager ...........................................................................................7-6

Manager Menu Summary .........................................................................................7-6

General Setup Menu ................................................................................................7-8

WAN Setup ..............................................................................................................7-9

LAN Setup ..............................................................................................................7-10

LAN Port Filter Setup Menu .............................................................................7-10

TCP/IP and DHCP Setup ................................................................................7-11

Manager Password Setup ......................................................................................7-13

Chapter 8 Using the Manager Interface to Configure the Router for Internet Access

Internet Access Configuration ........................................................................................8-1

Remote Node Setup Menu .......................................................................................8-3

Editing IP Options ...........................................................................................................8-6

Editing Filter Sets ...........................................................................................................8-8

Configuration for Local Servers ....................................................................................8-10

Setting Static Routes ....................................................................................................8-11

Dynamic DNS ...............................................................................................................8-14

Chapter 9 Using the Manager Interface for System Maintenance

System Status .................................................................................................................9-1

Terminal Baud Rate ........................................................................................................9-4

Log and Trace .................................................................................................................9-4

View Error Log .........................................................................................................9-4

Syslog and Accounting .............................................................................................9-5

Contents vii

Diagnostic Menu .............................................................................................................9-6

Back Up and Restore Configuration ...............................................................................9-8

Backing Up and Restoring the Configuration with a Serial Connection ...................9-8

Backing Up and Restoring the Configuration Using FTP .........................................9-9

Software Update .............................................................................................................9-9

Updating Router Software Using a Serial Connection .............................................9-9

Updating Router Software Using FTP ....................................................................9-10

Command Interpreter Mode .........................................................................................9-11

Remote Management ...................................................................................................9-11

Chapter 10 Configuring Filters

Router Filter Structure ..................................................................................................10-1

Configuring a Filter Set .................................................................................................10-2

Configuring a Filter Rule ...............................................................................................10-6

TCP/IP Filter Rule ..................................................................................................10-6

Generic Filter Rule .................................................................................................10-9

Applying a Filter Set ...................................................................................................10-10

Default Filters .............................................................................................................10-11

Filter 1: NetBIOS_WAN ........................................................................................10-11

Filter 2: NetBIOS_LAN .........................................................................................10-11

Filter 3: TEL_FTP_WEB_WAN ............................................................................10-11

Chapter 11 Troubleshooting

Basic Functioning .........................................................................................................11-1

PWR LED Not On ..................................................................................................11-1

Test LED Never Blinks or LED Stays On ................................................................11-2

LNK/ACT LEDs Not On ..........................................................................................11-2

Troubleshooting the Web Configuration Interface ........................................................11-2

Troubleshooting the ISP Connection ............................................................................11-3

Troubleshooting a TCP/IP Network Using a Ping Utility ...............................................11-5

Testing the LAN Path to Your Router .....................................................................11-5

Testing the Path from Your PC to a Remote Device ..............................................11-7

Troubleshooting the Manager Interface ........................................................................11-7

Restoring the Default Configuration and Password ......................................................11-8

Using a Serial Connection ......................................................................................11-8

viii Contents

Using FTP ..............................................................................................................11-9

Appendix A Technical Specifications

General Specifications ................................................................................................... A-1

Appendix B Network and Routing Basics

Basic Router Concepts .................................................................................................. B-1

What is a Router? ................................................................................................... B-1

Routing Information Protocol ................................................................................... B-2

IP Addresses and the Internet ................................................................................. B-2

Netmask .................................................................................................................. B-4

Subnet Addressing .................................................................................................. B-5

Private IP Addresses ............................................................................................... B-7

Single IP Address Operation Using NAT ................................................................. B-8

MAC Addresses and Address Resolution Protocol ................................................. B-9

Domain Name Server .............................................................................................. B-9

IP Configuration by DHCP .................................................................................... B-10

Ethernet Cabling .......................................................................................................... B-10

Uplink Switches and Crossover Cables .................................................................B-11

Cable Quality ..........................................................................................................B-11

Glossary Index

Contents ix

x Contents

Figure 2-1. RT311 Front Panel ...................................................................................2-3

Figure 2-2. RT314 Front Panel ...................................................................................2-3

Figure 2-3. RT311 Rear Panel ...................................................................................2-5

Figure 2-4. RT314 Rear Panel ...................................................................................2-5

Figure 4-1. Login window ...........................................................................................4-2

Figure 4-2. Browser-based configuration main menu ................................................4-2

Figure 4-3. Browser-based Setup Wizard, first screen ...............................................4-3

Figure 4-4. Browser-based Setup Wizard, second screen .........................................4-4

Figure 4-5. Browser-based Setup Wizard, third screen .............................................4-5

Figure 5-1. LAN Setup Menu ......................................................................................5-3

Figure 5-2. Port Forwarding Menu .............................................................................5-6

Figure 5-3. S tatic Route Summary Table ....................................................................5-8

Figure 5-4. Static Route Entry and Edit Menu ............................................................5-9

Figure 5-5. S tatic Route Example .............................................................................5-11

Figure 6-1. System Status screen ..............................................................................6-1

Figure 6-2. Router Statistics screen ...........................................................................6-3

Figure 6-3. DHCP Table .............................................................................................6-4

Figure 7-1. S tart-up Display ........................................................................................7-4

Figure 7-2. Manager Main Menu ................................................................................7-5

Figure 7-3. Menu 1 - General Setup ...........................................................................7-8

Figure 7-4. Menu 2 - WAN Setup ...............................................................................7-9

Figure 7-5. Menu 3 - LAN Setup ..............................................................................7-10

Figure 7-6. Menu 23 - System Password .................................................................7-14

Figure 8-1. Menu 4 - Internet Access Setup ...............................................................8-2

Figure 8-2. Menu 11.1 - Remote Node Profile ............................................................8-4

Figure 8-3. Menu 11.3 - Remote Node Network Layer Options .................................8-6

Figure 8-4. Menu 21 - Filter Set Configuration ...........................................................8-8

Figure 8-5. Menu 11.5 - Remote Node Filters ............................................................8-9

Figure 8-6. Menu 15 - SUA Server Setup ................................................................8-11

Figure 8-7. IP Static Routing Table Example ............................................................8-12

Figure 8-8. Menu 12.1 - Edit IP Static Route ............................................................8-13

Figure 8-9. Menu 1.1 - Configure Dynamic DNS ......................................................8-14

Figure 9-1. Menu 24 - System Maintenance ..............................................................9-2

Figure 9-2. Menu 24.1 - System Maintenance - Status ..............................................9-2

Figure 9-3. Menu 24.4 - System Maintenance - Diagnostic .......................................9-7

Figure 10-1. Menu 21 - Filter Set Configuration .........................................................10-2

Figure 10-2. Menu 21.1 - Filter Rules Summary ........................................................10-3

Figure 10-3. Menu 21.1.1 - TCP/IP Filter Rule ...........................................................10-5

Figure B-1. Three Main Address Classes .................................................................. B-3

Figure B-2. Example of Subnetting a Class B Address ............................................. B-5

Figure B-3. Single IP Address Operation Using NAT ................................................ B-8

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Table 2-1. LED Descriptions .....................................................................................2-4

Table 5-1. Dynamic DNS configuration fields ...........................................................5-2

Table 5-2. DHCP Setup Fields .................................................................................5-4

Table 5-3. LAN TCP/IP Setup Fields .......................................................................5-4

Table 5-4. Port Table Entries (Example) ...................................................................5-7

Table 5-5. Edit IP Static Route Fields ......................................................................5-9

Table 6-1. Menu 3.2 - System Status Fields .............................................................6-2

Table 6-2. Router Statistics Fields ...........................................................................6-3

Table 7-1. Manager Menu Commands ....................................................................7-6

Table 7-2. Manager Menu Summary .......................................................................7-6

Table 7-3. WAN Setup Fields ...................................................................................7-9

Table 7-4. Menu 3.1 - LAN Port Filter Setup Fields ................................................7-11

Table 7-5. Menu 3.2 - TCP/IP and DHCP Setup Fields .........................................7-12

Table 8-1. Remote Node Profile Fields ....................................................................8-4

Table 8-2. Remote Node Network Layer Options Fields ..........................................8-7

Table 8-3. Remote Node Filters Fields .....................................................................8-9

Table 8-4. Edit IP Static Route Fields ....................................................................8-13

Table 8-5. Dynamic DNS Configuration Fields ......................................................8-15

Table 9-1. System Maintenance Status ....................................................................9-3

Table 9-2. System Maintenance Status Fields .........................................................9-3

Table 9-3. System Maintenance - Log and Trace Fields ..........................................9-4

Table 9-4. System Maintenance - Syslog and Accounting Fields .............................9-5

Table 9-5. System Maintenance - Diagnostic Fields .................................................9-7

Table 10-1. Abbreviations Used in Menu 21.1 - Filter Rules Summary ...................10-3

Table 10-2. Abbreviations Used if Filter Type Is IP ...................................................10-4

Table 10-3. Abbreviations Used if Filter Type Is GEN ...............................................10-4

Table 10-4. TCP/IP Filter Rule Fields ......................................................................10-7

Table 10-5. Generic Filter Rule Fields .....................................................................10-9

Table B-1. Netmask Notation Translation Table for One Octet ................................. B-6

Table B-2. Netmask Formats .................................................................................... B-6

Table B-3. UTP Ethernet cable wiring, straight-through ......................................... B-10

xiii

xiv

About This Guide

Congratulations on your purchase of the NETGEAR™Model RT311 or RT314 Internet Access Gateway Router.

The Model RT311 and RT314 Internet Access Gateway Routers provide connection f or multiple personal computers (PCs) to the Internet through an external broadband access device (such as a cable modem or DSL modem) that is normally intended for use by a single PC.

Note: If you are unfamiliarwith networkingand routing, refer to Appendix B, “Network

andRoutingBasics,” to become more familiar with the terms and procedures used in this

manual.

Technical Support

For help with any technical issues, contact Customer Support at 1-888-NETGEAR, or visit us on the Web at www.NETGEAR.com. The NETGEAR Web site includes an extensive knowledge base, answers to frequently asked questions, and a means for submitting technical questions online.

Related Publications

As you read this document, you may be directed to various RFC documents for further information. An RFC is a Request For Comment (RFC) published by the Internet Engineering Task Force (IETF), an open organization that defines the architecture and operation of the Internet. The RFC documents outline and define the standard protocols and procedures for the Internet. The documents are listed on the World Wide Web at www.ietf.org and are mirrored and indexed at many other sites worldwide.

About This Guide xv

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

For more information about address assignment, refer to the IETF documents RFC 1597, Address Allocation for Private Internets, and RFC 1466, Guidelines for Management of IP Address Space.

For more information about IP address translation, refer to RFC 1631, The IP Network Address Translator (NAT).

xvi About This Guide

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

Typographical Conventions

This guide uses the following typographical conventions: italics Book titles and UNIX file, command, and directory names.

courier font Screen text, user-typed command-line entries.

Initial Caps Menu titles and window and button names. [Enter] Named keys in text are shown enclosed in square brackets. The notation

[Enter] is used for the Enter key and the Return key.

[Ctrl]+C Two or more keys that must be pressed simultaneously are shown in text

linked with a plus (+) sign.

ALL CAPS DOS file and directory names.

Special Message Formats

This guide uses the following formats to highlight special messages:

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

Caution: This format is used to highlight information that will help you prevent

equipment failure or loss of data.

Warning: This format is used to highlight information about the possibility of injury or

equipment damage.

Danger: This format is used to alert you that there is the potential for incurring an

electrical shock if you mishandle the equipment.

About This Guide xvii

Chapter 1

Introduction

This chapter describes the features of the NETGEAR Model RT311 and RT314 Internet Access Gateway Routers and discusses planning considerations for installation.

About the Router

The Model RT311 or RT314 Internet Access Gateway Router connects your local area network (LAN) to the Internet through an external single-user access device such as a cable modem or DSL modem.

When personal computers (PCs) on the LAN need to communicate with locations on the Internet, the PCs send requests to the router. The router translates those requests so that the requests appear to originate from a single PC, rather than from a network of PCs. The router delivers the requests to the external access device for transmission to the Internet.

Key Features

The Model RT311 and RT314 Internet Access Gateway Routers are flexible, high-performance, easy-to-use routers. These routers provide a cost-effective solution for connecting your entire network to a single-user broadband line, such as a cable modem or DSL modem. With minimum setup, you can install and use the router within minutes to meet the networking requirements of your LAN.

The Model RT311 and RT314 Internet Access Gateway Routers provide the following features:

• Ethernet LAN connection at 10 megabits per second (Mbps) or 100 Mbps – Internal four port 10/100 switch (Model RT314 router) – Single 10/100 port (Model RT311 router)

Introduction 1-1

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

– Autosensing for Ethernet (10BASE-T) or Fast Ethernet (100BASE-Tx) transmissions – Half-duplex or full-duplex operation

• Ethernet c onnection to a wide area network (WAN) device, such as a cable modem or DSL

modem

– RJ-45 interface allowing connection to a 10BASE-T device

• Protocol Support –IProuting – Dynamic extended Network Address Translation (NAT+) with port forwarding for

operation with a single static or dynamic IP address

– Dynamic Host Configuration Protocol (DHCP) server for dynamically assigning

network configuration information to PCs on the LAN

– DHCP client for dynamically obtaining configuration information from the Internet

Service Provider (ISP) – DNS Proxy for simplified configuration – PPP over Ethernet (PPPoE) support

• Login capability – Automatically executes user login for RoadRunner cable modem service or PPP over

Ethernet accounts

• Easy installation and management – Easy, web-based setup for configuration of most features – Built-in Manager interface for configuration of advanced features, accessible by serial

terminal or Telnet Protocol

•Security – Network Address Translation (NAT) hides local PCs from the Internet – Powerful packet filtering capabilities – Incoming port forwarding for specific services

• Front panel LEDs for easy monitoring of status and activity

• Flash EPROM for firmware upgrade

• Five-year warranty

• Free technical support seven days a week, twenty-four hours a day

1-2 Introduction

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

Autosensing 10/100 Ethernet

The Model RT311 and RT314 routers connect to either a 10 Mbps standard Ethernet network or a 100 Mbps Fast Ethernet network. The local LAN interface is autosensing and is capable of full-duplex operation.

TCP/IP

The Model RT311 and RT314 routers support the Transmission Control Protocol/Internet Protocol (TCP/IP) and Routing Information Protocol (RIP).

For further information about TCP/IP, refer to Appendix B, “Network and Routing Basics.”

• IP Address Masquerading by Dynamic NAT+

The Model RT311 and RT314 routers allow several 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, an extension of Network Address Translation (NAT), is also known as IP address masquerading and allows the use of an inexpensive single-user ISP account.

• Port Forwarding with NAT

Although NAT prevents Internet locations from directly accessing the PCs on the LAN, the router allows incoming traffic to be forwarded to specific PCs based on the service port number of the incoming request.

• Automatic Configuration of Attached PCs by DHCP

The Model RT311 and RT314 routers dynamically assign 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 LAN-attached PCs.

• DNS Proxy

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

• PPP over Ethernet (PPPoE)

PPP over Ethernet is a protocol for connecting remote hosts to the Internet over an always-on connection by simulating a dial-up connection.

Introduction 1-3

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

Security

The Model RT311 and RT314 routers are equipped with several features designed to maintain security, as described in this section.

• PCs Hidden by NAT

Network address translation (NAT) opens a temporary path to the Internet for requests originating f rom the local network. Requests originating from outside the LAN are discarded, preventing users outside the LAN from finding and directly accessing the PCs on the LAN.

• Packet Filtering

The Model RT311 and RT314 routers provide extensive packet filtering capabilities. Packets are allowed or discarded based on their s ource or destination addresses, service port numbers, or raw data patterns within the packet.

• Port-Address Translation

The Model RT311 and RT314 routers perform port-address translation. Requests originating from outside the local network are allowed to reach particular local workstations based on the type of service requested.

Easy Installation and Management

You can install, configure, and operate the Model RT311 or RT314 Internet Access Gateway Router 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 router from almost any type of personal computer, such as Windows,Macintosh, or Linux. A user-friendly Setup Wizard is provided and online help documentation is built into the browser-based Web Management Interface.

• Manager Interface

The Manager interface manages and configures the router through an easily understood screen process. You can access this interface through the MANAGER port on the rear panel of the router or from across the network, using a Telnet session. The Manager Interface provides access to advanced features such as custom filters.

• Visual monitoring

The Model RT311 and RT314 routers’s front panel LEDs provide an easy way to monitor its status and activity.

1-4 Introduction

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

Maintenance and Support

NETGEAR offers the following features to help you maximize your use of the Model RT311 and RT314 routers:

• Flash EPROM for firmware upgrade

• Five-year warranty

Free technical support seven days a week, twenty-four hours a day

Introduction 1-5

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

1-6 Introduction

Chapter 2

Setting Up the Hardware

This chapter describes the M odel RT311 or RT314 Internet Access Gateway Router hardware and provides instructions for installing it.

Package Contents

The product package should contain the following items:

• Model RT311 or RT314 Internet Access Gateway Router

• AC power adapter, 12 V DC output

• Category 5 (Cat 5) Ethernet cable, straight-through wiring (white)

• Category 5 Ethernet cable, crossover wiring (red) (RT311 only)

• Model RT311 and RT314 Resource CD, including:

— This guide — Application Notes

• Model RT311 and RT314 Internet Access Gateway Router Installation Guide

• Registration and Warranty Card

• Support Information Card

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 router for repair.

Setting Up the Hardware 2-1

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

Local Network Hardware Requirements

The Model RT311 or RT314 Internet Access Gateway Router is intended for use in a network of personal computers (PCs) that are interconnected by twisted-pair Ethernet cables.

PC Requirements

To install and run the Model RT311 and RT314 routers over your network of PCs, each PC must have the f ollowing:

• An installed Ethernet Network Interface Card (NIC).

• A connection to the network via a hub or switch. If all PCs on the network will not run at the

same speed (10 Mbps or 100 Mbps), you need to use a dual-speed hub or switch. The Model RT314 router provides a 4-port switch capable of either 10 Mbps or 100 Mbps operation. Links operating at 100 Mbps must be connected with Category 5 cable.

Access Device Requirement

The shared broadband access device (cable modem or DSL modem) must provide a standard 10BASE-T Ethernet interface.

2-2 Setting Up the Hardware

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

The Router’s Front Panel

The front panels of the Model RT311 router (Figure 2-1) and Model RT314 router (Figure 2-2) contain status LEDs.

Key:

1=PWR(Power)LED 2=TESTLED 3 = LO CAL LAN LNK/ACT (Link/ Activity) and 100 M LEDs 4 = INTERNET LNK/ACT (Link/Activity) LED

Figure 2-1. RT311 Front Panel

Key:

1=PWR(Power)LED 2=TESTLED 3 = LAN LNK/ACT (Link/Activity) and 100M LEDs 4 = INTERNET LNK/ACT (Link/Activity) LED

Figure 2-2. RT314 Front Panel

Setting Up the Hardware 2-3

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

You can use some of the LEDs to verify connections. Table 2-1 lists and describes each LED on the front panel of the router. These LEDs are green when lit.

Table 2-1. LED Descriptions

Label Activity Description

PWR (Power) On

Off

TEST On

Off Blinking

LOCAL

LNK/ACT (Link/Activity)

100 (100 Mbps) On

INTERNET LNK/ACT (Link/Activity)

On Blinking

Off On

Blinking

Power is supplied to the router. Power is not supplied to the router.

The system is not ready or has failed to start up. The system is ready and running. The system is initializing.

The LAN port has detected a link with an attached device. Data is being tranmitted or received by the LAN port.

The LAN is operating at 100 Mbps. The LAN is operating at 10 Mbps.

The Internet port has detected a link with an attached device. Data is being tranmitted or received by the Internet port.

2-4 Setting Up the Hardware

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers

The Router’s Rear Panel

The rear panels of the Model RT311 router and Model RT314 router are shown in Figure 2-3 and

Figure 2-4. Refer to these diagrams to identify all the ports on the router when you attempt to make

any connections.

Key:

1 = Ground 2 = A C adapter outlet for connecting the AC adapter to the router 3 = Local Et hernet port for connecting the router to the local LAN 4 = Internet Ethernet port for connecting the router to a cable or DSL modem 5 = RS-232 Manager port for connecting the router to the serial port of a PC

Figure 2-3. RT311 Rear Panel

Key:

1 = AC adapter outlet for connecting the AC adapter to the router 2 = Local Et hernet ports for connecting the router to the local PCs 3 = RS-232 M anager port for connecting the router to the serial port of a PC 4 = Internet Ethernet port for connecting the router to a cable or DSL modem 5 = Ground

Figure 2-4. RT314 Rear Panel

Setting Up the Hardware 2-5

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Connecting the Router

Before using your router, you need to do the following:

• Connect your local Ethernet network to the LOCAL port(s) of the router (described next).

• Connect your cable or DSL modem to the INTERNET port of the router (see page 2-7).

• Connect the power adapter (see page 2-8).

Connecting to your Local Ethernet Network

Your local network will attach to the router port or ports m arked LOCAL. Because the Model RT314 router includes a four-port switch while the Model RT311 router has a single port for connection to your local network, the method of connection is different. Follow the procedure below for your specific model.

The LOCAL ports of these routers are capable of operation at either 10 M bps (10BASE-T) or 100 Mbps (100BASE-Tx), depending on the Ethernet interface of the attached PC, hub, or switch. For any connection which will operate at 100 Mbps, you must use a Category 5 (CAT5) rated cable, such as the white Ethernet cable included with the router.

Connecting the Model RT311 router to your Local Area Network

The Model RT311 router has a single port for connection to your local network. This port is wired as a host rather than a hub, and is intended to connect to a hub or switch in your network. To connect the Model RT311 router to your LAN:

• Connect the LOCAL port of the router to your existing Ethernet hub or switch using the white

straight-through Ethernet cable shipped with your router.

To connect the router to a single PC:

• Connect the LOCAL port of the router to the Ethernet port of your PC using the red Ethernet

crossover cable shipped with your router.

If the Ethernet port of your PC operates at 100 Mbps, you must use a Category 5 rated cable, such as the red Ethernet cable included with the Model RT311 router.

Connecting the Model RT314 router to your Local Area Network

The Model RT314 router incorporates a four-port switch for connection to your local network. To connect the Model RT314 router to your LAN:

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• Connect up to four PCs directly to any of the four LOCAL ports of the router using standard

Ethernet cables.

If your local network consists of more than four hosts, you will need to connect your router to another hub or switch:

• Connect any LOCAL port of your Model RT314router to the UPLINK port of an Ethernet hub

or switch using standard Ethernet cable. If the UPLINK port of your hub or switch is selectable for UPLINK or NORMAL operation,

be sure that UPLINK is selected. If the hub or switch does not contain an UPLINK port, you can connect to one of its normal ports using an Ethernet crossover cable.

Connecting to Your Internet Access Device

To connect the router to the Internet (or WAN):

1. Connect the router’sINTERNET port to the 10BASE-T Ethernet port on your existing Internet

access device (your cable modem or DSL modem).

Note: The attached modem device must provide a standard 10BASE-T Ethernet connection. The

Model RT311 and RT314 routers do not include a cable for this connection. Instead, use the Ethernet cable provided with your access device or any other standard 10BASE-T Ethernet cable. If you are using a DSL modem, the modem’s connection to the phone line remains unchanged.

Note: The Ethernet cable supplied by your ISP for connecting to your cable or DSL modem may

be an Ethernet crossover cable rather than a straight-throughcable. It is important to use this cable to connect the modem to your router, not to connect your PCs to your router.

Connecting the Serial Cable (Optional)

In normal operation, you will not need a serial connection to t he Manager port. This connection is used:

• to configure your router using the Manager interface if you cannot use Telnet, or

• to restore the router to factory defaults if you have lost your Manager password.

To connect the serial cable:

1. Plug one end of the 9-pin RS-232 cable into the MANAGER port.

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2. Plug the other end into a serial port (such as COM1 or COM2) of your PC.

Note: You must use a 9-pin to 25-pin adapter if your PC has only a 25-pin port

available.

Connecting the Power Adapter

To connect the router to the power adapter:

1. Plug the connector of the power adapter into the 12 V DC adapter outlet on the rear panel of the

router.

2. Plug the other end of the adapter into a standard wall outlet.

3. Verify that the PWR LED on the router is lit.

Verifying Power

After connecting the power adapter to the router and a power source, the router powers on automatically. Complete the following steps to verify that power is correctly applied to the router:

1. When power is first applied, verify that the PWR LED is on.

2. Verify that the TEST LED begins to blink within a few seconds.

3. After approximately 30 seconds, verify that:

a. The TEST LED is not lit. b. The LOCAL LNK/ACT LEDs are lit for any local ports that are connected. c. The INTERNET LNK/ACT LED is lit.

If a LNK/ACT LED is lit, a link has been established to the connected device.

4. If a LOCAL port is connected to a 100 Mbps device, verify that the 100 LED is lit.

You are now ready to begin configuration of your network, as described in the following chapter.

2-8 Setting Up the Hardware

Chapter 3

Preparing Your Network

This chapter describes how to prepare your PC network to connect to the Internet through the Model RT311 or RT314 Internet Access Gateway Router and how to order broadband Internet service from an Internet service provider (ISP).

Preparing Your Personal Computers for IP Networking

The Model RT311 and RT314 Internet Access Gateway Routers use the Transmission Control Protocol/InternetProtocol (TCP/IP). In order to access the Internet through the router, each PC on your network must have TCP/IP installed and selected as the networking protocol.

Note: In this chapter, we use the term “PC” to refer to personal computers in general, and not

necessarily Windows computers. Most operating systems include the software components you need to install and use TCP/IP on

your PC:

• Windows

establishing a TCP/IP network.

• Windows 3.1 does not include a TCP/IP component. You need to purchase a third-party TCP/

IP application package such as NetManage Chameleon.

• Macintosh Operating System 7 or later includes the software components for establishing a

TCP/IP network.

• All versions of UNIX or Linux include TCP/IP components.

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Follow the instructions provided w ith your operating system or networking software to install TCP/IP on your computer. Although TCP/IP is built into the Windows operating system (starting with Windows 95), you need to enable and configure it as described in “Configuring Windows 95

or later for IP Networking”onpage 3-2. To configure the Macintosh, see “Configuring the Macintosh for IP Networking on page 3-5.

In your IP network, all PCs and the router must be assigned IP addresses. Each PC must also have certain other IP configuration information such as a subnet mask (netmask), a domain name server (DNS) address, and a default gateway address. In most cases, you should install TCP/IP so that the PC obtains its specific network configuration information from a DHCP server during bootup. For a detailed explanation of the meaning and purpose of these configuration items, refer to “Appendix B, “Network and Routing Basics.”

The Model RT311 and RT314 routers are shipped preconfigured as a DHCP server. The router assigns the following TCP/IP configuration information automatically when the PCs are rebooted:

• PC or workstation IP addresses—192.168.0.2 through 192.168.0.31

• Subnet mask—255.255.255.0

• Gateway address (the router)—192.168.0.1

These addresses are part of the IETF-designated private address range for use in private networks.

Configuring Windows 95 or later for IP Networking

As part of the PC preparation process, you need to manually install and configure TCP/IP on each networked PC. Before starting, locate your Windows CD; you may need to insert it during the TCP/IP installation process.

To configure Microsoft

1. On the Windows taskbar,click the Start button, point to Settings, and then click Control Panel.

2. Double-click the Network icon.

The Network window opens, which displays a list of installed components:

3-2 Preparing Your Network

Windows 95 or later for IP networking:

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You must have an Ethernet adapter, the TCP/IP protocol, and Client for Microsoft Networks.

Note: It is not necessary to remove any other network components shown in the

Network window in order to install the adapter, TCP/IP, or Client for Microsoft Networks.

Ifyouneedtheadapter:

a. Click the Add button. b. Select Adapter, and then click Add. c. Select the manufacturer and model of your Ethernet adapter, and then click OK.

If you need TCP/IP:

a. Click the Add button. b. Select Protocol, and then click Add. c. Select Microsoft.

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d. Select TCP/IP, and then click OK.

If you need Client for Microsoft Networks:

a. Click the Add button. b. Select Client, and then click Add. c. Select Microsoft. d. Select Client for Microsoft Networks, and then click OK.

3. Restart your PC for the changes to take effect.

Configuring TCP/IP Properties

After the TCP/IP protocol components are installed, each PC must be assigned specific information about itself and resources that are available on its network. The simplest way to configure this information is to allow the PC to obtain the information from the internal DHCP server of the Model RT311 and RT314 routers.

Note: If an ISP technician configured your PC during the installation of a broadband

modem, or if you configuredit using instructions provided by your ISP, you may need to copy the current configuration information for use in the configuration of your router. Refer to “Obtaining ISP Configuration Information (Windows)”onpage 3-8 or

“Obtaining ISP Configuration Information (Macintosh)”onpage 3-9 for further

information.

If you are using DHCP with the recommended default addresses, you can configure your PCs by following these steps:

1. Install TCP/IP on each PC, leaving t he PC configured to obtain configuration settings

automatically (by DHCP).

2. Physically connect the PCs and the router using a hub or a direct connection.

3. Restart the router and allow it to boot.

4. Restart each PC.

Verifying TCP/IP Properties (Windows)

After your PC is configured and has rebooted, you can check the TCP/IP configuration using the Windows 95 and 98 utility winipcfg.exe (for Windows NT or 2000 systems, use ipconfig.exe).

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To check your PC’s TCP/IP configuration:

1. On the Windows taskbar, click the Start button, and then click Run.

The Run window opens.

2. Type winipcfg, and then click OK.

The IP Configurationwindow opens, which lists (among other things), your IP address, subnet mask, and default gateway.

3. Select your Ethernet adapter.

The window is updated to show your settings, which should match the values below if you are using the default TCP/IP settings that NETGEAR recommends:

• The IP address is between 192.168.0.2 and 192.168.0.31

• The subnet mask is 255.255.255.0

• The default gateway is 192.168.0.1

Configuring the Macintosh for IP Networking

Beginning with Macintosh Operating System 7, TCP/IP is already installed on the Macintosh. On each networked Macintosh, you will need to configure TCP/IP to use DHCP by following these steps:

1. From the Apple menu, select Control Panels, then TCP/IP.

The TCP/IP Control Panel opens:

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2. From the “Connect via” box, select your Macintosh’s Ethernet interface.

3. From the “Configure” box, select Using DHCP Server.

You can leave the DHCP Client ID box empty.

4. Close the TCP/IP Control Panel.

5. Repeat this for each Macintosh on your network.

Verifying TCP/IP Properties (Macintosh)

After your Macintosh is configured and has rebooted, you can check the TCP/IP configuration by returning to the TCP/IP Control Panel. From the Apple menu, select Control Panels, then TCP/IP.

The panel is updated to show your settings, which should match the values below if you are using the default TCP/IP settings that NETGEAR recommends:

• The IP Address is between 192.168.0.2 and 192.168.0.31

• The Subnet mask is 255.255.255.0

• The Router address is 192.168.0.1

If you do not see these values, you may need to restart your Macintosh or you may need to switch the “Configure” setting to a different option, then back again to “Using DHCP Server”.

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Your Internet Account

For access to the Internet, you need to contract with an Internet service provider (ISP) for a single-user Internet access account using an external broadband access device such as a cable modem or DSL modem. This modem must be a separate physical box (not a card) and must provide an Ethernet port intended for connection to a Network Interface Card (NIC) in a PC.

For a single-user Internet account, your ISP supplies TCP/IP configuration information for one PC. With a typical account, much of the configuration information is dynamically assigned when your PC is first booted up while connected to the ISP, and you will not need to know that dynamic information.

In order to share the Internet connection among several computers, your router takes the place of the single PC, and you need to configure it with the TCP/IP information that the single PC would normally use. When the router’s INTERNET port is connected to the broadband modem, the router appears to be a single PC to the ISP. The router then allows the PCs on the local network to masquerade as the single PC to access the Internet through the broadband modem. The method used by the router to accomplish t his is called Network Address Translation (NAT) or IP masquerading.

Login Protocols

Some ISPs require a special login protocol. In this case, you will need to know what type of protocol is used, and you will need a login name and password. The two common protocols are:

• PPP over Ethernet (PPPoE)

Two common PPPoE clients are WinPOET and EnterNet.

• RoadRunner

Not all RoadRunner service areas require a login protocol. If your ISP is RoadRunner, you should ask whether your PC must run a RoadRunner login program.

After your network a nd router are configured, the router will perform the login task when needed, and you will no longer need to login from your PC.

Account Information

Unless these items are dynamically assigned by the ISP, your ISP should give you the following basic information for your account:

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• An IP address and subnet mask

• A gateway IP address, which is the address of the ISP’s router

• One or more domain name server (DNS) IP addresses

• Host name and domain suffix

For example, your account’s full server names may look like this:

mail.xxx.yyy.com

In this example, the domain suffix is xxx.yyy.com.

If any of these items are dynamically supplied by the ISP, your router automatically acquires them. If an ISP technician configured your PC during the installation of the broadband modem, or if you configured it using instructions provided by your ISP, you need to copy configuration information from your PC’s Network TCP/IP Properties window (or Macintosh TCP/IP Control Panel) before reconfiguring your PC for use with the router. These procedures are described next.

Obtaining ISP Configuration Information (Windows)

As mentioned above, you may need to collect configuration information from your PC so that you can use this information when you configure the Model RT311 and RT314 routers. Following this procedure is only necessary when your ISP does not dynamically supply the account information.

To get the information you need to configure the router for Internet access:

1. On the Windows taskbar,click the Start button, point to Settings, and then click Control Panel.

2. Double-click the Network icon.

The Network window opens, which displays a list of installed components.

3. Select TCP/IP, and then click Properties.

The TCP/IP Properties dialog box opens.

4. Select the IP Address tab.

If an IP address and subnet mask are shown, write down the information. If an address is present, your account uses a fixed (static) IP address. If no address is present, your account uses a dynamically-assigned IP address. Click “Obtain an IP address automatically”.

5. Select the Gateway tab.

If an IP address appears under Installed Gateways, write down the address. This is the ISP’s gateway address. Select the address and then click Remove to remove the gateway address.

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6. Select the DNS Configuration tab.

If any DNS server addresses are shown, write down the addresses. If any information appears in the Host or Domain information box, write it down. Click Disable DNS.

7. Click OK t o save your changes and close the TCP/IP Properties dialog box.

You are returned to the Network window.

8. Click OK.

9. Reboot your PC at the prompt. You may also be prompted to insert your Windows CD.

Obtaining ISP Configuration Information (Macintosh)

As mentioned above, you may need to collect configuration information from your Macintosh so that you can use this information when you c onfigure the Model RT311 and RT314 routers. Following this procedure is only necessary when your ISP does not dynamically supply the account information.

To get the information you need to configure the router for Internet access:

1. From the Apple menu, select Control Panels, then TCP/IP.

The TCP/IP Control Panel opens, which displays a list of configuration settings. If the “Configure” setting is “Using DHCP Server”, your account uses a dynamically-assigned IP address. In this case, close the Control Panel and skip the rest of this section.

2. If an IP address and subnet mask are shown, write down the information.

3. If an IP address appears under Router address, write down the address. This is the ISP’s

gateway address.

4. If any Name Server addresses are shown, write down the addresses. These are your ISP’sDNS

addresses.

5. If any information appears in the Search domains information box, write it down.

6. Change the “Configure” setting to “Using DHCP Server”.

Close the TCP/IP Control Panel.

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Ready for Configuration

After configuring all of your PCs for TCP/IP networking and connecting them to the LOCAL network of your Model RT311 and RT314 routers, you are ready to access and configure the router. Proceed to the next chapter.

3-10 Preparing Your Network

Chapter 4

Initial Configuration of the Router

This chapter describes how to perform the initial configuration of your Model RT311 or RT314 Internet Access Gateway Router using the Setup Wizard, which walks you through the configuration process.

Configuring for Internet Access

In order to use the browser-based Web Configuration Manager, your PC must have a web browser program installed such as Microsoft Internet Explorer or Netscape Navigator. Because the Configuration Manager uses Java, your Web browser must be Java-enabled and support HTTP uploads. NETGEAR recommends using Netscape Navigator 3.0 or above. Free browser programs are readily available for Windows, Macintosh, or UNIX/Linux.

To configure for Internet access using your browser:

1. Turn on the router and wait for initialization to complete.

Allow at least one minute and verify that the TEST LED is off.

2. Reboot your PC to obtain DHCP configuration from the router.

3. Launch your web browser.

4. In the Address box of your browser, type http://192.168.0.1 and press ENTER.

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A login window opens as shown in Figure 4-1 below:.

Figure 4-1. Login window

Type admin in the User Name box, 1234 in the Password box, and then click OK.

If your router password was previously changed, enter the current password.

6. In the opening screen, shown in Figure 4-2, select WIZARD SETUP.

Figure 4-2. Browser-based configuration main menu

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7. In the first Wizard screen, enter your account’s Host Name a nd Domain Name, as shown in

Figure 4-3 below:

Figure 4-3. Browser-based Setup Wizard, first screen

These parameters may be necessary to access your ISP’s servicessuch as mail or news servers. If you leave the Domain Name field blank, the router will attempt to learn the domain automatically from the ISP. If this is not successful, you will need to enter it manually.

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8. Click on Next to go to the ISP Parameters screen, shown in Figure 4-4 below:

Figure 4-4. Browser-based Setup Wizard, second screen

This screen determines whether a login program will be run.

a. If your service provider does not require a login program, leave Encapsulation as Ethernet

and proceed to Step 9.

b. If your service provider uses PPP over Ethernet (PPPoE), select Encapsulation as PPPoE,

and enter these additional parameters:

• If your connection supports multiple ISPs, enter the ServiceName of the one you use.

Otherwise leave Service Name blank.

• Enter the PPPoE login user name and password provided by your ISP. These fields are

case sensitive.

• If you wish to change the login timeout, enter a new value in seconds. ProceedtoStep9.

c. European versions only: If your service provider uses Alcatel's A NT (ADSL Network

Termination) with PPTP as a login method, select Encapsulation as PPTP, and enter these additional parameters:

• Enter the PPTP login user name and password provided by your ISP. These fields are

case sensitive.

• If you wish to change the login timeout, enter a new value in seconds.

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• If provided by your ISP, enter your PPTP IP Address and the Server IP Address of

their PPTP Server.

• If provided by your ISP, enter the Connection ID/Name for your service. Otherwise

leave this field blank.

ProceedtoStep9.

d. If your service provider is RoadRunner AND you are required to run a RoadRunner login

program, leave Encapsulation as Ethernet and select Service Type as either RR-Manager or RR-Toshiba. Enter these additional parameters:.

• If your cable modem is Toshiba, select RR-Toshiba. Otherwise select RR-Manager.

• Enter the user name and password provided by your ISP. These fields are case

sensitive.

• If RoadRunner provided an authentication server address, enter it as Login Server IP

address. Otherwise, leave this field as 0.0.0.0.

Not all R oadRunner regions require a login program. If your region does not require a login, leave Service Type as Standard.

9. ClickonNexttogotothefinalWizardscreenshowninFigure 4-5 below.

Figure 4-5. Browser-based Setup Wizard, third screen

This screen provides setup for the following parameters:

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a. WAN IP Address Assignment: Unless your ISP has assigned a fixed permanent IP address

for your use, select "Get automatically from ISP". Otherwise, enter your IP Address, Subnet Mask, and the IP Address of your ISP’s gateway router.

b. DNS Server Address Assignment: If you know that your ISP does not automatically

transmit DNS addresses to the router during login, select “Use this server” and enter the IP address of the ISP’s DNS server.

A DNS server is a host on the Internet that translates Internet names (such as www addresses)to numeric IP addresses. Typically your ISP transfers the IP addresses of one or two DNS servers to your router during login. If the ISP does not transfer an address, you must obtain it from the ISP and enter it manually here. If you enter an address here, you should reboot your PCs after configuring the router.

c. WAN MAC address: If your ISP allows access by only one specific PC’s Ethernet MAC

address, select "Spoof this PC’s MAC address" and enter the IP address of that PC.

• For convenience, the IP address of the PC you are now using should already appear. If

this is not the PC whose MAC address is to be used, enter that PC's IP address.

• Some ISPs will register the Ethernet MAC address of the network interface card in

your PC when your account is first opened. They will then only accept trafficfrom the MAC address of that PC. This feature allows your router to masquerade as that PC by using its MAC address.

10. ClickonFinish.

11. Click on the NETGEAR website address t o test your Internet connection.

If the NETGEAR website does not appear within one minute, refer to Chapter 11,

“Troubleshooting”.

Your router is now configured to provide Internet access for your network. When your router and PCs are configured correctly, your router automatically accesses the Internet when one of your LAN devices requires access. It is not necessary to run a dialer application such as Dial-Up Networking or RoadRunner Login to connect,log in, or disconnect. These functions are performed by the router as needed.

To access the Internet from any PC connected to your router, launch a browser such as Microsoft Internet Explorer or Netscape Navigator. You should see the router’s Internet LED blink, indicating communication to the ISP. The browser should begin to display a Web page.

4-6 Initial Configuration of the Router

Chapter 5

Advanced Configuration of the Router

This chapter describes how to configure the advanced features of your Model RT311 or RT314 Internet Access Gateway Router. These features can be found by clicking on the Advanced heading in the Main Menu of the browser interface.

System Settings

The first feature category under the Advanced heading is System settings. These are general purpose settings.

System Tab

The System Tab contains fields for setting the System (Host) Name and Domain Name. These parameters may be necessary to access your ISP’s services such as mail or news servers.

•SystemName

This is the host or account name given by your ISP for naming your PC. It is often the primary email name of your account.This name can be up to 30 alphanumeric characters long. Spaces are not allowed, but dashes "-" and underscores "_" are accepted.

•DomainName

This is the extended domain suffix that follows your ISP server names. For example, if your ISP’s mail server is mail.sfbay.myISP.com, then your Domain Name is sfbay.myISP.com.

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Dynamic DNS

Your router supports Dynamic Domain Name Service (DDNS). In a Dynamic DNS service, an IP registry server provides a public central database where dynamically-assignedIP addresses can be stored and retrieved by hostname lookup. The Dynamic DNS server also stores password-protected e-mail addresses along with IP addresses and hostnames and accepts queries based on e-mail a ddresses.

To utilize this service, you must register with the Dynamic DNS service provider, who will give you a password or key. At this time, the Model RT311 and RT314 routers only support DynDNS service. For more information, visit www.dyndns.org.

The configuration fields for Dynamic DNS are shown in Table 5-1:

Table 5-1. Dynamic DNS configuration fields

Field Description

Active Use this field to activate or deactivate dynamic DNS registration. Service Provider Select a dynamic DNS service provider. Host Name Enter the static host name that will link to your dynamic IP address. E-Mail Address Enter your email address for administrative contact. User Enter the user name of your dynamic DNS account. Password Enter the password of your dynamic DNS account. Enable Wildcard DynDNS.org allows the use of wildcards in resolving your URL.

Enabling the wildcard feature for your host will cause

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

Password

Select the Password tab to change your router’s management password. This is the password to access the router for configuration, not for Internet access. To change the password, first enter the old password, and then enter the new password twice.

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LAN Setup

The second feature category under the A dvanced heading is LAN Setup. This menu allows configuration of LAN IP services such as DHCP and RIP. From the Main Menu of the browser interface, under Advanced, click on LAN to view the LAN Setup menu, shown in Figure 5-1

Figure 5-1. LAN Setup Menu

DHCP

The Model RT311 and RT314 routers have the capability to act as a DHCP server, allowing them to assign IP, DNS, and default gateway addresses to attached PCs. The assigned default gateway address is the LAN address of the router. IP addresses will be assigned to the attached PCs from a pool of addresses specified in this menu. Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN.

See “IP Configuration by DHCP”onpage B-10 for an explanation of DHCP and information about how to assign IP addresses for your network.

For most applications, the default DHCP and TCP/IP settings of the router are satisfactory. These default settings are:

• DHCP server enabled with 32 client addresses starting from 192.168.0.1.

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Table 5-2 lists and describes the fields to use for setting up DHCP parameters..

Table 5-2. DHCP Setup Fields

Field Description

DHCP Server: If this box is checked, the router acts as a DHCP server.

If this box is cleared, the router’s DHCP server is disabled. Pool Starting Address The beginning of the range of IP addresses to assign. Count The number of sequential addresses available for assignment to

attached hosts. The maximum is 32. Primary DNS Server If you want the router to provide the Primary DNS Server address to

attached hosts, enter the DNS address in this field. If this field is 0.0.0.0,

the router assigns its own address as DNS Server, and performs a DNS

Proxy if it can obtain a DNS address from the ISP. Secondary DNS Server If you want the router to assign the Secondary DNS Server address

to attached hosts, enter the address in this field.

LAN TCP/IP

Table 5-3 lists and describes the fields to use for setting up TCP/IP parameters for the LAN...

Table 5-3. LAN TCP/IP Setup Fields

Field Description

TCP/IP Setup:

IP Address Enter the IP address of the LAN interface of the router in dotted-decimal

notation (four 8-bit numbers, between 0 and 255, separated by periods,

for example, 192.168.0.1). Every device o n the TCP/IP network must

have a unique IP address. IP Subnet Mask An IP address consists of two parts, the network ID and the host ID. The

IP Subnet Mask specifies the network ID portion of the address, written

in dotted-decimal notation. The router automatically calculates this mask

for the class of the IP address that you assign. Unless you have a

special need for subnetting,use the default subnet mask calculated by

the router. All hosts on the LAN segment should use the same mask.

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Table 5-3. LAN TCP/IP Setup Fields (continued)

Field Description

RIP Direction This parameter determines how the router handles RIP (Routing

Information Protocol). RIP allows the router to exchange routing

information with other routers. If set to None (default), the router does

not participate in any RIP exchange with other routers. If set to Both, the

router broadcasts the routing table of the router on the LAN and

incorporates RIP broadcasts by other routers into its routing table. If set

to In Only,the router broadcasts its routing table on the LAN. If set to

Out Only, the router broadcasts its routing table, but it ignores any RIP

broadcast packets that it receives. Usually, you should leave this

parameter at the default (None)

RIP Version Thisfield determines the format and broadcasting method of any RIP

(RoutingInformation Protocol) transmissions by the router. The following

RIP options are supported by the Model RT311 router:

• RIP-1—The router sends RIP-1 messages only.

• RIP-2B—The router sends RIP-2 messages in broadcast format.

• RIP-2M—The router sends RIP-2 messages in multicast format.

For most applications, the recommended version is RIP-1.

Multicast Some streaming media applications (e.g. Cisco IP/TV, RealPlayer) now

support IP Multicast. Toenable Multicast routing, select either IGMP-v1

or IGMP-v2.

Note: If you change the LAN IP address of the router while connected through the

browser or Telnet, you will be disconnected. You must then open a new connection to the new IP address and log in again.

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Configuring for Port Forwarding to Local Servers

Although the router causes your entire local network to appear as a single machine to the Internet, you can make local servers for differentservices (for example, FTP or HTTP) visible and available to the Internet. This is done using the PORTS menu. From the Main Menu of the browser interface, under Advanced, click on PORTS to view the port forwarding screen, shown in

Figure 5-2

Figure 5-2. Port Forwarding Menu

Requested services are identified by port numbers in an incoming IP packet. For example, a packet that is sent to the external IP address of your router and destined for port number 80 is an HTTP (Web server) request, and port 21 is an FTP request. Examples of port numbers are shown at the top of the PORTS menu, although you are not limited to these choices. See IETF RFC1700, “Assigned Numbers,” for port numbers for common protocols..

Note: Many 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.

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Use the PORTS menu to configure the router to forward incoming protocols to IP addresses on your local network based on the port number. In addition to servers for specific protocols, you can also specify a Default (also called DMZ) Server to which all other incoming protocols are forwarded. To configure port forwarding to a local server:

1. Enter a port number in an unused Start Port box.

2. To forward only one port, enter it again in the End Port box. To specify a range of ports, enter

the last port to be forwarded in the End Port box.

3. Enter the IP address of the local server in the corresponding Server IP Address box.

4. Click Apply at the bottom of the menu.

Local Web and FTP Server Example

If a local PC, with a private address of 192.168.0.33, acts as a Web and FTP server, configure the PORTS menu to forward ports 80 (HTTP) and 21 (FTP) to local address 192.168.0.33 as shown in

Table 5-4.

Table 5-4. Port Table Entries (Example)

Port # Server IP Address

Default 0.0.0.0 80 (HTTP) 192.168.0.33 21 (FTP) 192.168.0.33

In order for a remote user to access this server from the Internet, the remote user must know the IP address that has been assigned by your ISP. If this address is 172.16.1.23, for example, an Internet user can access your Web server by directing the browser to http://172.16.1.23. The assigned IP address can be found in the Maintenance Status Menu, where it is shown as the WAN IP Address.

Some considerations for this application are:

• If your account’s IP address is assigned dynamically by your ISP, the IP address may change periodically as the DHCP lease expires.

• If the IP address of the local PC is assigned by DHCP, it may change when the PC is rebooted. To avoid this, change the configuration of your PCs to use fixed private addresses rather than DHCP-assigned addresses.

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• Local PCs must access the local server using the PCs’ local LAN address (192.168.0.33 in this example). Attempts by local PCs to access the server using the external IP address (172.16.1.23 in this example) will fail.

Local Game Host or Videoconference Example

Some online games and videoconferencing applications are incompatible with NAT. The Model Model RT311 and RT314 routers are programmed to recognize some of these applications and to work properly with them, but there are other applications that may not function well. In some cases, one local PC can run the application properly if that PC’s IP address is entered as the default in the PORTS Menu. If one local PC acts as a game or videoconference host, enter its IP address as the default.

Static Routes

The fourth feature category under the Advanced heading is Static Route, which allows configuration of additional routing information. Under normal circumstances, the router has adequate routing information after it has been configured for Internet access, and you do not need to configure additional static routes. You must configure static routes only for unusual cases such as multiple routers or multiple IP subnets located on your network.

From the Main Menu of the browser interface, under Advanced, click on Static Route to view the Static Route menu, shown in Figure 5-3.

Figure 5-3. Static Route Summary Table

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To add or edit a Static Route, select a number and click the Edit button to open the Edit Menu, shown in Figure 5-4

Figure 5-4. Static Route Entry and Edit Menu

Table 5-5 lists and describes the fields for the IP Static Route Edit menu.

Table 5-5. Edit IP Static Route Fields

Field Description

Route Name Enter a descriptive name for this route for identification purposes only. Active Use this field to activate or deactivate this static route. Destination IP Address Enterthe IP network addressof the final destination.Routing is always based

on network number.If you need to specify a route to a single host, use a subnet mask of 255.255.255.255 in the subnet mask field to force the

network number to be identical to the host ID. IP Subnet Mask Enter the subnet mask for this destination. Gateway IP Address Enter the IP address of the gateway to the destination network. The gateway

is the next router that your router contacts in order to forward packets to the

destination.On the LAN, the gateway must be a router on the same segment

as the router. Over the WAN, the gateway will be the IP address of the router

at your ISP.

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Table 5-5. Edit IP Static Route Fields (continued)

Field Description

Metric Enter the cost in ‘hops’ of transmission for routing purposes. IP routing uses

hop counts as the measurement of cost, with a minimum of 1 for directly

connected networks. Enter a number that approximates the cost for this link.

The number does not have to be precise, but it must be between1 and 16. In

practice, 2 or 3 is usually a good number. Private Use this field to determine whether the router includes the route to this

remote node in its RIP broadcasts. If set to Yes,this route is kept private and

not included in any RIP broadcast.If set to No, the route to this remote node

is propagated to other hosts through RIP broadcasts.

Static Route Example

As an example of when a static route is needed, consider the following case:

• Your primary Internet access is through a cable modem to an ISP.

• You have an ISDN router on your home network for connecting to the company where you are employed. This router’s address on your LAN is 192.168.0.100.

• Your company’s network is 134.177.0.0.

When you first configured your router, two implicit static routes were created. A default route was created with your ISP as the gateway, and a second static route was created to your local network for all 192.168.x.x addresses. With this configuration, if you attempt to access a device on the

134.177.0.0 network, your router will forward your request to the ISP. The ISP forwards your request to the company where you are employed, and the request will l ikely be denied by the company’s firewall.

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In this case you must define a static route, telling your router that 134.177.0.0 should be accessed through the ISDN router at 192.168.100. The static route would look like Figure 5-5.

Figure 5-5. Static Route Example

In this example:

• The Destination IP Address and IP Subnet Mask fields specify that this static r oute applies to all 134.177.x.x addresses.

• The Gateway IP Address fields specifies that all traffic for these addresses should be forwarded to the ISDN router at 192.168.0.100.

• A Metric value of either 1 or 2 will work.

• Private is selected only as a precautionary security measure in case RIP is activated.

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5-12 Advanced Configuration of the Router

Chapter 6

Maintenance

This chapter describes how to use the maintenance features of your Model RT311 or RT314 Internet Access Gateway Router. These features can be found by clicking on the Maintenance heading in the Main Menu of the browser interface.

System Status

The System Status menu provides a limited amount of status and usage information. From the Main Menu of the browser interface, click on Maintenance, then select System Status to view the System Status screen, shown in Figure 6-1

Figure 6-1. System Status screen

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This screen shows the following parameters:

Table 6-1. Menu 3.2 - System Status Fields

Field Description

System Name This field displays the Host Name assigned to the router. Router Firmware Version This field displays the router firmware version. WAN Port These parameters apply to the Internet (WAN) port of the router.

IP Address This field displays the IP address being used by the Internet (WAN) port

of the router. If no address is shown, the router cannot connect to the Internet.

IP Subnet Mask This field displays the IP Subnet Mask being u sed by the Internet (WAN)

port of the router.

DHCP If set to None, the router is configured to use a fixed IP address on the

WAN. If set to Client, the router is configured to obtain an IP address dynamically from the ISP.

LAN Port These parameters apply to the Local (WAN) port of the router.

IP Address This field displays the IP address being used by the Local (LAN) port of

the router. The default is 192.168.0.1

IP Subnet Mask This field displays the IP Subnet Mask being used by the Local (LAN)

port of the router. The default is 255.255.255.0

DHCP If set to None, the router will not assign IP addresses to local PCs on the

LAN. IfsettoServer,therouterisconfiguredtoassignIPaddressestolocal PCs on the LAN.

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Click on the “Show Statistics” button to display router usage statistics, as shown in Figure 6-2 below:

Figure 6-2. Router Statistics screen

This screen shows the following statistics:.

Table 6-2. Router Statistics Fields

Field Description

Port The statistics for the WAN (Internet) and LAN (local) ports. For each port, the screen

displays: Status The link status of the port. TxPkts The number of packets transmitted on this port since reset or manual clear. RxPkts The number of packets received on this port since reset or manual clear. Collisions The number of collisions on this port since reset or manual clear. Tx B/s The current line utilization—percentage of current bandwidth used on this port. Tx B/s The average line utilization —average CLU for this port. UpTime Thetimeelapsedsincethisportacquiredlink.

System up Time The time elapsed since the last power cycle or reset. Poll Interval Specifies the intervals at which the statistics are updated in this window. Click on Stop

to freeze the display.

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DHCP Table

The DHCP Table shows all IP address assignments that have been made by the router’s DHC P server. From the Main Menu of the browser interface, click on Maintenance, then select DHCP Table to view the table, shown in Figure 6-3

Figure 6-3. DHCP Table

For each PC client, the table shows the IP address, Ethernet MAC address, and NetBIOS Host Name. Note that if the router is rebooted, the table data is lost until each PC renews its DHCP lease.

Software Upgrade

The routing software of the Model RT311and RT314routers is stored in FLASH memory,and can be upgraded as new software is released by NETGEAR. Upgrade files can be downloaded from Netgear's website. If the upgrade file is compressed (.ZIP file), you must first extract the binary (.BIN) file before sending it to the router. The upgrade file can be sent to the router using your browser.

Note: The Webbrowser used to upload new firmware into the Model RT311 and RT314 routers

must support HTTP uploads. NETGEAR recommends using Netscape Navigator 3.0 or above. To reach the Upgrade menu, click Maintenance from the navigation bar on the left, and then click

the Upgrade heading. To upload new firmware:

1. Download and unzip the new software file from NETGEAR.

2. In the Software Upgrade menu, click the Browse button and browse to the location of the

binary (.BIN) upgrade file

3. Click Upload.

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Note: When uploading software to the Model RT311 and RT314 routers, it is important not to interrupt the Web browser by closing the window,clicking a link, or loading a new page. If the browser is interrupted, it may corrupt the software. When the upload is complete, your router will automatically restart.

In some cases, you may need to reconfigure the router after upgrading.

Configuration File Management

The configuration settings of the Model RT311 and RT314 routers are stored within the r outer in a configuration file. This file can be saved (backed up) to a user’s PC, retrieved (restored) from the user’s PC, or cleared to factory default settings.

To manage the configuration file, click on Maintenance in the Main Menu of the browser interface, then select Files. Three submenu tabs are available, and are described in the following sections.

Restore and Backup the Configuration

The Restore and Backup tabs in the Maintenance Files menu allow you to save and retrieve a file containing your router’s configuration settings.

To save your settings, select the Backup tab. Click the Backup button. Your browser will extract the configuration file, named‘rom-0’, from the router and will prompt you for a location on your PC to store the file.

To restore your settings, select the Restore tab. Enter the full path to the configuration file on your PC or click the Browse button to browse to the file. When you have located it, click on the Upload button to send the file to the router. The router will then reboot automatically.

Erase the Configuration

It is sometimes desirable to restore the router to a known blank condition. This can be done by using the Erase function, which will restore all factory settings. After an erase, the router's password will be 1234, the LAN IP address will be 192.168.0.1, and the router's DHCP client will be enabled.

To erase the configuration, click the Erase tab, then click the Erase button on the screen.

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6-6 Maintenance

Chapter 7

Using the Manager Interface for Initial Router

Configuration

This chapter contains information about basic configuration for your Model RT311 or RT314 Internet Access Gateway Router using the internal Manager interface. The initial configuration consists of:

– accessing the Manager, – naming the router, – and setting up the LAN interface, including DHCP parameters to be assigned to the

attached PCs.

After you have performed basic router configuration, proceed to Chapter 8, “Using the Manager

Interface to Configure the Router for Internet Access,” and Chapter 10, “Configuring Filters,” to

configure Internet access and additional features.

Note: You can also use the browser-based setup to configure basic router features, and

later use the Manager interface to configure advanced features.

Connecting for Configuration

The Manager interface is accessible by a serial connection through the MANAGER port on the rear panel of your router or by a Telnet connection over the local network, as described in the following sections.

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Connecting Through a Serial Port

You can access the internal Manager interface through a serial port by using a VT100 terminal or by using a terminal-emulation program on your PC or workstation. If you are using Windows, for example, Microsoft

provides HyperTerminal with Windows 95 and Windows 98. Be sure to set

the program for VT100 emulation, including arrow keys. Serial port parameters are as follows:

• 9600 bps

• 8 data bits

•1stopbit

•Noparity

• No flow control When the serial connection has been established, press any key. The router should respond with a

“Password:” prompt. Type the current password to access the Manager interface. The default password is 1234.

Connecting Through a Telnet Connection

You can access the built-in interface by a Telnet call from any TCP/IP workstation on the LAN or the remote network. In order to use the Telnet Protocol, you must know the current IP address of the router. If you do not know the router’s current IP address, you must use a serial connection to assign an IP address. The router is shippped with a default address of 192.168.0.1.

To establish a Telnet connection from the LAN, you must set up your workstation to reach the IP address of the router by doing one of the following:

• Set your workstation to an IP address on the currently programmed subnet of the router.

• Add a route to the static routing table of the workstation to indicate that the router can be reached through the local LAN port.

To access the router by Telnet from a Windows PC:

1. From the Windows toolbar,select Start.

2. Select Run...

3. In the Open field, type:

telnet 192.168.0.1

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4. ClickonOK.

The router should respond with a “Password:” prompt. Typethe current password to access the Manager interface. The default password is 1234.

.When using Telnet, consider the following restrictions:

• Single administrator To prevent confusion and discrepancy on the configuration, the router allows only one

terminal connection at any time. The router also gives priority to the RS-232 connection over Telnet. If you have already connected to the router through Telnet, you are logged out if another user then connects through the RS-232 cable. You can use a Telnet connection only after the other administrator has disconnected.

• System t imeout When you are connected to the router through Telnet, there is a system timeout of 5 minutes

(300 seconds). If you are not configuring the device and leave it inactive for this timeout period, the router automatically disconnects from the Telnet session.

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Using the Manager Interface

Turning on Power to the Router

When power is first applied to the router, several internal tests are performed by the router. Your Internet line is initialized at this time. During the initialization, the start-up display is transmitted over the serial Manager port, as illustrated in Figure 7-1. Note that this display is only visible from a serial connection, as the router will not accept a Telnet connectionuntil initialization is complete.

Bootbase Version: V1.12 | 1/27/2000 18:31:01 RAM: Size = 4096 Kbytes DRAM POST: Testing: 4096K OK FLASH: intel 8M

RAS Version: V3.20(M.00) | 5/26/2000 19:43:28

Press any key to enter debug mode within 3 seconds.

..........................................

Figure 7-1. Start-up Display

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TologintotheManagerinterface:

1. Press [Enter] when prompted.

A login screen is displayed and prompts you to enter a password.

2. Enter the default password 1234 t o reach the Main Menu (Figure 7-2)oftheManager.

RT311 Main Menu

Getting Started Advanced Management

1. General Setup 21. Filter Set Configuration

2. WAN Setup

3. LAN Setup 23. System Password

4. Internet Access Setup 24. System Maintenance

Advanced Applications

11. Remote Node Setup

12. Static Routing Setup

15. SUA Server Setup

99. Exit

Figure 7-2. Manager Main Menu

After you have accessed the Manager, the router automatically logs you out and displays a blank screen if there is no activity for longer than 5 minutes. If you see a blank screen while connected by serial port, press [Enter] to display the password screen again. If you are logged out of a Telnet session, you must open a new Telnet session.

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Navigating the Manager

The Manager is the interface that you use to configure your router. Table 7-1 lists and describes the commands that enable you to navigate through the Manager menus.

Table 7-1. Manager Menu Commands

Action Description

Move forward to another menu

Move back to a previous menu

Move the cursor Press [Enter]. You can also use the Up and Down keys to move to the previous and

Enter information There are two types of fields for entering selected parameters. The first requires you

Required fields Some of the fields in the Manager are essential in order to configure the router. The

N/A fields Some of the fields in the Manager show N/A, meaning the option is not available. Save your

configuration

Enter the number of the submenu and press [Enter].

Press [Esc]. The only exception is the Main Menu, where typing 99 is the only method to exit from the Manager.

next fields, respectively.

to enter the appropriate information. The second gives you options to choose from. When choosing options, press the space bar to toggle through the available options.

required fields initially show a question mark (?), indicating that the information must be filled in before that menu can be saved.

Press [Enter] when prompted to press ENTER to confirm or ESC to cancel. In most cases, saving the data on the screen takes you to the previous menu.

Manager Menu Summary

Table 7-2 describes the top-level Manager menus.

Table 7-2. Manager Menu Summary

Number Menu Title Description

1 General Setup Specify a router name. 2 WAN Setup Set full/half duplex to the external wide area network (WAN)

connection. This connection is typically a broadband modem connected to the Internet port of the router. Also allows selection of the MAC address.

3 LAN Setup Configure the local area network (LAN) parameters,including IP

address and DHCP operation.

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Table 7-2. Manager Menu Summary (continued)

Number Menu Title Description

4 Internet Access Setup Set up a basic Internet connection. 11 Remote Node Setup Configure additional parameters of the Internet connection 12 StaticRouting Setup Manually configure static routes. The router supports eight static

routes.

15 SUA Server Setup Configure forwarding of specific incoming service requests to local

hosts.

21 Filter Set Configuration Set up filters to be used in Menu 3 and Menu 4 to provide security

and traffic control. 23 System Password Change password for Manager access. 24 System Maintenance Provide system status, diagnostics, and firmware upload. 99

Exit Exit from the Manager.

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General Setup Menu

The General Setup Menu contains administrative and system-related information, such as the router name.

To enter administrative and system-related information:

1. Enter 1 from the Main Menu to display Menu 1 - General Setup, as illustrated in

Figure 7-3.

Menu 1 - General Setup

System Name = MyRT311 Domain Name: santaclara.gearguy.com

Configure Dynamic DNS= No

Press ENTER to Confirm or ESC to cancel:

Figure 7-3. Menu 1 - General Setup

In the System Name field, enter a name for identifying the router.

For identification purposes, choose a descriptive name for the router, such as MyRT311. If your ISP has assigned a host name for your PC, the System Name in some cases must be set to the host name. The System Name can include up to 30 alphanumeric characters. Spaces are not allowed, but dashes ( - ) and underscores ( _ ) are acceptable.

3. (Optional) In the Domain Name field, enter the domain name of your Internet service.

The Domain Name may be helpful in accessing some of the services of your ISP, such as email, news servers and customer support. If your account’s full server names look like this:

mail.xxx.yyy.com

your domain name is xxx.yyy.com.

4. (Optional) Configure for Dynamic DNS.

IfyouwishtouseDynamicDNS,referto“Dynamic DNS“ on page 8-14.

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WAN Setup

Menu 2 enables you to configure the 10 Mbps Ethernet port to a broadband modem device, such as a cable or DSL modem. This port is labeled INTERNET on the rear panel of the router.

Figure 7-4 shows Menu 2 - WAN Setup.

Menu 2 - WAN Setup

MAC Address:

Assigned By= Factory default IP Address= N/A

Press ENTER to Confirm or ESC to cancel:

Figure 7-4. Menu 2 - WAN Setup

Table 7-3 lists and describes the fields for Menu 2 - WAN Setup.

Table 7-3. WAN Setup Fields

Field Description

MAC Address The MAC Address is the 48-bit Ethernet address of the router’s INTERNET port.

Assigned By Set to Factory default to use the router’s internal globally unique MAC address.

Set to ‘IP address attached on LAN’ to acquire and substitute the MAC address of one of your PCs on the local network. Some ISPs will only accept traffic from the MAC address of one PC. This feature allows your router to masquerade as that PC by using its MAC address.

IP Address If you selected IP address attached on LAN in the previous field, you must specify

the IP address of the local PC with the MAC address to be used by the router.

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LAN Setup

Menu 3 enables you to configure the Ethernet LAN parameters, including filters, DHCP, and IP address information. These parameters specify the behavior of the router’s local port.

1. From the Main Menu, enter 3 to display Menu 3 - LAN Setup (Figure 7-5).

Menu 3 - LAN Setup

1. LAN Port Filter Setup

2. TCP/IP and DHCP Setup

Enter Menu Selection Number:

Figure 7-5. Menu 3 - LAN Setup

Select one of the following submenus:

• Menu 3.1 LAN Port Filter Setup

• Menu 3.2 TCP/IP and DHCP Setup Refer to the following sections for descriptions of these submenus. Refer to Table 7-1 on page

7-6 for i nformation about navigating through the menus.

LAN Port Filter Setup Menu

The LAN Port Filter Setup Menu allows you to apply filter sets to control your Ethernet traffic. Filters are used to block certain packets, to reduce traffic, and to prevent security breaches. You must first create these filter sets using Menu 21, and then apply them by number in this menu. Refer to Chapter 10, “Configuring Filters,” for m ore information about configuring and applying filters.

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Table 7-4 lists and describes the interface and filter choices in the LAN Port Filter Setup menu.

Table 7-4. Menu 3.1 - LAN Port Filter Setup Fields

Field Description

Input and Output Filter Sets Enterfilter sets by number to filter packets coming from the LAN (Input)

or going out to the LAN (Output). Protocol Filters Enter the numbers of one or more IP filter sets created in Menu 21. Device Filters Enter the numbers of one or more generic filter sets created in Menu 21.

TCP/IP and DHCP Setup

The Model RT311 and RT314 routers have the capability to act as a DHCP server, allowing them to assign IP, DNS, and default gateway addresses to attached PCs or workstations. The assigned default gateway address is the LAN address of the router, as set in the TCP/IP section. Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN.

If you are setting up your network for the first time, read about IP addresses starting with “IP

Addresses and the Internet”onpage B-2 and “IP Configuration by DHCP”onpage B-10 for an

explanation of DHCP and information about how to assign IP addresses for your network. For most applications, the default DHCP and TCP/IP settings of the router are satisfactory. These

default settings are:

• LAN IP address 192.168.0.1 with subnet mask 255.255.255.0.

• DHCP server enabled with 32 client addresses starting from 192.168.0.1.

• DNS Proxy enabled (the router address is assigned as a DNS server).

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Table 7-5 lists and describes the fields to use for setting up TCP/IP and DHCP parameters in

Menu 3.2. When you finish entering information in all of the fields, press [Enter] at the prompt Press ENTER to Confirm. Your selections are saved. Press [Esc] at any time to cancel the entries you have made.

Note: If you change the LAN IP address of the router while connected through Telnet,

you lose the Telnet session. You must then open a new Telnet connection to the new IP address and log in again.

Table 7-5. Menu 3.2 - TCP/IP and DHCP Setup Fields

Field Description

DHCP: If set to Server, the router acts as a DHCP server.

If set to None, the router’s DHCP server is disabled. DHCP Configuration:

Client IP Pool Starting Address

Size of Client IP Pool This field is the number of sequentialaddresses available for

Primary DNS Server If you want the router to provide the Primary DNS Server address to

Secondary DNS Server If you want the router to assign the Secondary DNS Server address

TCP/IP Setup:

IP Address Enter the IP address of the LAN interface of the router in dotted-decimal

IP Subnet Mask An IP address consists of two parts, the network ID and the host ID. The

This field is the beginning of the range of addresses to assign.

assignment to attached hosts. The maximum is 32.

attached hosts, enter the DNS address in this field. If this field is 0.0.0.0,

the router assigns its own address as DNS Server, and performs a DNS

Proxy if it can obtain a DNS address from the ISP.

to attached hosts, enter the address in this field.

notation (four 8-bit numbers, between 0 and 255, separated by periods,

for example, 192.168.0.1). Every device o n the TCP/IP network must

have a unique IP address.

IP Subnet Mask specifies the network ID portion of the address, written

in dotted-decimal notation. The router automatically calculates this mask

for the class of the IP address that you assign. Unless you have a

special need for subnetting,use the default subnet mask calculated by

the router. All hosts on the LAN segment should use the same mask.

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Table 7-5. Menu 3.2 - TCP/IP and DHCP Setup Fields (continued)