SMC Networks DORY3A User Manual

Comcast Wireless Cable Modem Gateway

`

FastFind Links

Getting to Know the Gateway

SMCD3GNV User Manual

Installing the Gateway
Preconfiguration Guidelines

Configuring the Gateway
Configuring the Gateway’s mso Interface

SMC Networks

20 Mason

Irvine, CA. 92618

U.S.A.

Copyright © 2012 SMC Networks

All Rights Reserved

Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable. However,
no responsibility is assumed by SMC for its use, or for any infringements of patents or other rights of
third parties which may result from its use. No license is granted by implication or otherwise under
any patent or patent rights of SMC. SMC reserves the right to change specifications at any time
without notice

No part of this publication may be reproduced or transmitted in any form or by any means, electronic
or mechanical, including photocopying and recording, or stored in a database or retrieval system for
any purpose without the express written permission of SMC.

Microsoft and Windows are registered trademarks of Microsoft Corporation. Apple and Macintosh are
registered trademarks of Apple, Inc. All other brands, product names, trademarks, or service marks
are property of their respective owners.

This product (Model :SMCD3G2GNV) includes software code developed by third parties, including
software code subject to the GNU General Public License (“GPL”) or GNU Lesser General Public
License (LGPL”). As applicable, the terms of the GPL and LGPL, and information on obtaining access
to the GPL code and LGPL used in this product, are available to you at http://gpl.smc.com/. The GPL
code and LGPL code used in this product is distributed WITHOUT ANY WARRANTY and is subject to
the copyrights of one or more authors. For details, see the GPL Code and LGPL Code for this product
and the terms of the GPL and LGPL.

SMCD3GNV Wireless Cable Modem Gateway User Manual

May 8, 2012

Contents

Preface .................................................................................................................... vii

Key Features ............................................................................................................. viii

Document Organization .............................................................................................. ix

Document Conventions .............................................................................................. ix

Safety and Warnings ............................................................................................ ix

Typographic Conventions ............................................................................................ x

1 Getting to Know the Gateway ............................................................................ 11

Unpacking Package Contents ................................................................................... 12

System Requirements ............................................................................................... 12

Front Panel ................................................................................................................ 13

Rear Panel ................................................................................................................ 15

Top Panel .................................................................................................................. 16

Bottom Panel ............................................................................................................. 16

Using the Reset Button ............................................................................................. 17

2 Installing the Gateway ........................................................................................ 18

Finding a Suitable Location ....................................................................................... 19

Installing a Battery ..................................................................................................... 20

Connecting to the LAN .............................................................................................. 21

Connecting the WAN ................................................................................................. 22

Connecting to the Public Telephone Network ........................................................... 22

Powering on the Gateway ......................................................................................... 23

3 Preconfiguration Guidelines .............................................................................. 24

Configuring Your Computer for TCP/IP ..................................................................... 25

Configuring Microsoft Windows 2000 .................................................................. 25

Configuring Microsoft Windows XP ..................................................................... 26

Configuring Microsoft Windows Vista .................................................................. 27

Configuring Microsoft Windows 7 ........................................................................ 30

Configuring an Apple

Disabling Proxy Settings ........................................................................................... 34

Disabling Proxy Settings in Internet Explorer ...................................................... 34

Disabling Proxy Settings in Firefox ...................................................................... 34

Disabling Proxy Settings in Safari ....................................................................... 35

Disabling Firewall and Security Software .................................................................. 35

Confirming the Gateway’s Online Status ................................................................... 35

®

Macintosh® Computer ..................................................... 33

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Confirming Your Computer’s Link Status .................................................................. 35

4 Configuring the Gateway ................................................................................... 36

Accessing the Gateway’s Web Management ............................................................ 37

Understanding the Web Management Interface Menus ............................................ 38

Web Management Interface Menus .......................................................................... 40

Viewing Information About Your Network and Connected Devices ..................... 42

Viewing Information About Your Network and Connections ................................ 43

Viewing the Gateway’s Connection Status .................................................... 44

Viewing Comcast Network Information .......................................................... 46

Viewing and Editing Your Local IP Configuration .......................................... 47

Viewing and Editing Wireless Configuration .................................................. 49

Configuring Firewall Settings ............................................................................... 53

Viewing System Software Settings ...................................................................... 55

Configuring System Hardware ............................................................................. 56

Viewing System Hardware Settings .............................................................. 56

Viewing Battery Settings ................................................................................ 57

Viewing LAN Ethernet Settings ..................................................................... 58

Viewing Wi-Fi Settings ................................................................................... 59

Configuring Your Home Network ......................................................................... 60

Working with Connected Devices ........................................................................ 64

Manually Adding Computers with Static IP Addresses to the Wireless

Network ............................................................................................ 65

Configuring Parental Controls ............................................................................. 68

Blocking Sites and Keywords, and Selecting Trusted Computers ................. 68

Blocking Services .......................................................................................... 75

Managing Devices and Access Types ........................................................... 78

Generating Reports ....................................................................................... 82

Using Advanced Features ................................................................................... 84

Enabling or Disabling Port Forwarding .......................................................... 84

Enabling or Disabling Port Triggering ............................................................ 87

Enabling or Disabling Port Blocking ..............................................................

overing Devices ...................................................................................... 92

Disc

Troubleshooting the Gateway .............................................................................. 94

Defining Log Filters ........................................................................................ 94

Testing Connectivity to Destination and IP Addresses .................................. 96

Restoring or Rebooting the Gateway ............................................................ 98

Changing the Login Password ....................................................................... 99

91

5 Configuring the Gateway’s mso Interface ...................................................... 100

Accessing the Gateway’s Web Management .......................................................... 101

Understanding the Web Management Interface Menus .......................................... 102

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Web Management Interface Menus ........................................................................ 104

Configuring the Gateway Settings ..................................................................... 106

Viewing At-a-Glance Configuration Settings................................................ 107

Configuring Email Notifications .................................................................... 108

Configuring Connections ................................................................................... 110

Viewing the Gateway’s Connection Status .................................................. 111

Viewing and Editing Your Local IP Configuration ........................................ 112

Viewing and Editing Wireless Configuration ................................................ 114

Viewing XFINITY Network Information ........................................................ 121

Configuring Firewall Settings ............................................................................. 123

Viewing System Software Settings .................................................................... 125

Configuring Hardware ........................................................................................ 126

Viewing System Hardware Settings ............................................................ 127

Viewing Battery Settings .............................................................................. 128

Viewing LAN Ethernet Settings ................................................................... 129

Viewing Wi-Fi Settings ................................................................................. 130

Configuring Your Home Network ....................................................................... 131

Working with Connected Devices ...................................................................... 135

Manually Adding Computers with Static IP Addresses ................................ 136

Manually Adding Wireless Clients ............................................................... 139

Configuring Parental Controls ........................................................................... 142

Blocking Sites and Keywords, and Selecting Trusted Computers ............... 142

Blocking Services and Selecting Trusted Computers .................................. 148

Managing Devices and Access Types ......................................................... 152

Generating Reports ..................................................................................... 156

Using Advanced Features ................................................................................. 157

Enabling or Disabling Port Forwarding ........................................................ 157

Enabling or Disabling Port Triggering .......................................................... 160

Remote Management .................................................................................. 163

Configuring DMZ Settings ...........................................................................

Configuri

ng Routing Settings ....................................................................... 167

165

Configuring Dynamic DNS Settings ............................................................. 169

Discovering Devices .................................................................................... 171

Troubleshooting the Gateway ............................................................................ 173

Generating Logs .......................................................................................... 174

Testing Connectivity to Destination and IP Addresses ................................ 175

Restoring or Rebooting the Gateway .......................................................... 177

Changing the Login Password ..................................................................... 178

6 Troubleshooting Procedures ........................................................................... 179

Basic Troubleshooting Procedures ......................................................................... 180

Advanced Troubleshooting Procedures .................................................................. 182

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Troubleshooting Physical Network Problems .................................................... 182

Troubleshooting Configuration Problems .......................................................... 183

Determining Your IP Address ...................................................................... 183

Troubleshooting Software-Interaction Problems ............................................... 187

Specific Troubleshooting Procedures ...................................................................... 188

Unable to Log In to Gateway ............................................................................. 188

Local Networked Devices Unable to Access the Gateway ................................ 188

Unable to Access the Internet ........................................................................... 189

Unable to Access Networked Devices ............................................................... 191

Using the Ping Utility to Troubleshoot ............................................................... 191

Testing the Path from a Computer to the Gateway ..................................... 191

Testing the Path from a Computer to the Internet ....................................... 192

Using Ping on a Macintosh .......................................................................... 193

Gateway Disconnects from the Internet ............................................................ 194

Slow Web Browsing ........................................................................................... 195

Unable to Configure Port Forwarding ................................................................ 195

Unable to Use Pass-thru VPN ........................................................................... 195

Gateway is Not Passing DHCP Address to a computer .................................... 195

Determining a Computer’s MAC Address .......................................................... 196

Microsoft Windows ...................................................................................... 196

Apple Macintosh Windows OS X ................................................................. 197

Wireless Troubleshooting ........................................................................................ 198

Checking the Gateway’s Wireless Connection .................................................. 198

Wireless Range is Low ...................................................................................... 198

Unable to Connect to a Wireless Network Using Windows XP and Vista ......... 199

Achieving Optimal Wireless Performance ......................................................... 201

Guidelines for Improving Your Wireless Network .............................................. 201

Wireless IEEE 802.11n Guidelines .................................................................... 202

Application and Gaming Troubleshooting ............................................................... 204

Connecting to Messenger Services Behind the Gateway .................................

Connecting

to America Online Behind the Gateway ......................................... 204

204

Connecting to XBox Live, PSP, and Nintendo WFC ......................................... 204

Appendix A - Specifications ............................................................................... 205

Appendix B - Compliances ................................................................................. 209

Index ..................................................................................................................... 211

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Preface

The SMCD3GNV Wireless Cable Modem Gateway is the ideal all-in-one wired and wireless
solution for the home or business environment. SMC is proud to provide you with a powerful,
yet simple communication device for connecting your local-area network (LAN) to the
Internet.

This user manual contains all the information you need to install and configure your new
SMCD3GNV Wireless Cable Modem Gateway.

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Preface

Key Features

The following list summarizes the Gateway’s key features.

 Integrated, CableLabs-compliant DOCSIS 1.1/ 2.0 /3.0 cable modem.

 Integrated cable modem port for Internet connection to cable modem service.

 Four 10/100/1000 Mbps Auto-Sensing LAN ports with Auto-MDI/MDIX.

 High-speed 300 Mbps IEEE 802.11n Wireless Access Point.

 Dynamic Host Configuration Protocol (DHCP) for dynamic IP configuration, and Domain

Name System (DNS) for domain name mapping.

 One USB 2.0 port.

 Two Plain Old Telephone System (POTS) RJ-11 telephone ports to allow Public Switch

Telephone Network (PSTN) analog phone connections.

 IEEE 802.11 b/g/n interoperability with multiple vendors.

 Wireless WEP, WPA, and WPA2 encryption, Hide SSID, and MAC Filtering.

 VPN pass-through support using PPTP, L2TP, or IPSec.

 Advanced SPI firewall Gateway for enhanced network security from attacks over the

Internet:

– Firewall protection with Stateful Packet Inspection

– Client privileges

– Hacker prevention

– Protection from denial of service (DoS) attacks

– Network Address Translation (NAT)

 Universal Plug and Play (UPnP) enables any UPnP device seamlessly.

 Quality of Service (QoS) ensures high-quality performance with existing networks.

 Effortless plug-and-play installation.

 Intuitive graphical user interface (GUI) configuration, regardless of operating system.

 Comprehensive front panel LEDs for network status and troubleshooting.

 Compatible with all popular Internet applications.

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Preface

Document Organization

This document consists of four chapters and two appendixes.

 Chapter 1 - describes the contents in the Gateway package, system requirements, and

an overview of the Gateway’s front, rear, top, and bottom panels.

 Chapter 2 - describes how to install the Gateway.
 Chapter 3 - describes how to configure TCP/IP settings on the computer you will use to

configure the Gateway.

 Chapter 4 - describes how to configure the Gateway.
 Chapter 6 – provides troubleshooting information you can use in the unlikely event you

encounter a problem with the Gateway.

 Appendix A - lists the Gateway’s specifications.
 Appendix B - contains compliance information.

Document Conventions

This document uses the following conventions to draw your attention to certain information.

Safety and Warnings

This document uses the following symbols to draw your attention to certain information.

Symbol Meaning Description

Note Notes emphasize or supplement important points of the main text.

Tip Tips provide helpful information, guidelines, or suggestions for performing tasks more

Warning Warnings indicate that failure to take a specified action could result in damage to the

Electric Shock Hazard This symbol warns users of electric shock hazard. Failure to take appropriate

effectively.

device.

precautions such as not opening or touching hazardous areas of the equipment could
result in injury or death.

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Preface

Typographic Conventions

This document also uses the following typographic conventions.

Convention Description

Bold Indicates text on a window, other than the window title, including menus, menu options, buttons, fields, and labels.

Italic Indicates a variable, which is a placeholder for actual text provided by the user or system. Angled brackets (< >)

are also used to indicate variables.

screen/code Indicates text that is displayed on screen or entered by the user.

< > angled
brackets

[ ] square
brackets

{ } braces Indicates required or expected values.

| vertical bar Indicates that you have a choice between two or more options or arguments.

Indicates a variable, which is a placeholder for actual text provided by the user or system. Italic font is also used to

indicate variables.

Indicates optional values.

x

SMCD3GNV Wireless Cable Modem Gateway User Manual

1 Getting to Know the Gateway

Before you install your SMCD3GNV Wireless Cable Modem Gateway, check the package
contents and become familiar with the Gateway’s front and back panels.

The topics covered in this chapter are:

 Unpacking Package Contents (page 12)

 System Requirements (page 12)

 Front Panel (page 13)

 Rear Panel (page 15)

 Bottom Panel (page 16)

 Top Panel (16)

 Using the Reset Button (page 17)

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Getting to Know the Gateway

Unpacking Package Contents

Unpack the items in your SMCD3GNV Wireless Cables Modem Gateway contents and
confirm that no items are missing or damaged. Your package should include:

 One SMCD3GNV Wireless Cable Modem Gateway

 One 2600 mAh battery

 One Category 5E Ethernet cable

If any items are missing or damaged, please contact your cable service provider. Keep the
carton, including the original packing material, in case you need to store the product or
return it.

System Requirements

To complete your installation, you will need the following items:

 Provisioned Internet access on a cable network that supports cable modem service.

 A computer with a wired network adapter with TCP/IP installed.

 A Java-enabled Web browser, such as Microsoft Internet Explorer 5.5 or above.

 Microsoft

 An analog telephone and two RJ-11 cables if you want to connect the Gateway to an

®

Windows® 2000 or higher for USB driver support.

analog telephone and PSTN telephone line.

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Getting to Know the Gateway

Front Panel

The front panel of your SMCD3GNV Wireless Cable Modem Gateway contains a set of light­emitting diode (LED) indicators. These LEDs show the status of the Gateway and simplify
troubleshooting.

Figure 1 shows the front panel of the SMCD3GNV Wireless Cable Modem Gateway. Table 1
describes the front panel LEDs.

Figure 1. Front Panel of the SMCD3GNV Wireless Cable Modem Gateway

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Getting to Know the Gateway

Table 1. Front Panel LEDs

LED Color Description

POWER White ON = power is supplied to the Gateway.

OFF = power is not supplied to the Gateway.

US/DS White Blinking = ranging is in progress.

ON = ranging is complete on 1 channel only.

OFF = scanning for DS channel.

DS White Blinking = scanning for DS channel.

ON = synchronized on 1 channel only.

US and DS Both US and DS blinking together = operator is performing maintenance.

Online White Blinking = cable interface is acquiring IP, ToD, CM configuration.

ON = Gateway is operational.

OFF = Gateway is offline.

WiFi White Blinking = data is transmitting over the Gateway’s Wi-Fi interface.

ON = Wi-Fi is enabled.

OFF = Wi-Fi is disabled.

Tel1 White Blinking = telephone line 1 is in use.

ON = Gateway’s telephone 1 port is online.

OFF = Gateway’s telephone 1 port is not online.

Tel2 White Blinking = telephone line 2 is in use.

ON = Gateway’s telephone 2 port is online.

OFF = Gateway’s telephone 2 port is not online.

Battery White Blinking = Gateway battery power is low. Please apply AC power as soon as possible.

ON = Gateway is operating from battery power.

OFF = Gateway is operating from AC power.

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Getting to Know the Gateway

Rear Panel

The rear panel of your SMCD3GNV Wireless Cable Modem Gateway contains a reset
button and the ports for attaching the supplied power adapter and making additional
connections. Figure 2 shows the rear panel components and Table 2 describes their
meanings.













Figure 2. Rear View of the SMCD3GNV Wireless Cable Modem Gateway

Table 2. SMCD3GNV Wireless Cable Modem Gateway Rear Panel Components

Item Description













Reset button Use this button to reset the power or restore the default factory settings (see “Using the Reset

Button” on page 17).

USB USB 2.0 high-speed port for USB-enabled peripherals.

Tel 1-2 Connect an analog telephone to one port and an analog (PSTN) telephone line to the other port.

Ethernet 1-4 Four 10/100/1000 auto-sensing RJ-45 switch ports. Connect devices on your LAN such as a

computer, hub, or switch to these ports. Each port has two LED lights (see Table 3 on the next
page).

Cable Connect your coaxial cable line to this port.

Power 110 VAC Connect the supplied power cord.

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Getting to Know the Gateway

Table 3. Gigabit Ethernet Connectors LED Indicators

LED Description

Green Indicate 10/100/1000Mbps in use

Amber Indicate 10/100Mbps in use

Top Panel

The top panel of your SMCD3GNV Wireless Cable Modem Gateway has a WPS button for
configuring wireless security automatically. Figure 3 shows the WPS button.

Figure 3. Top View of the SMCD3GNV Wireless Cable Modem Gateway

Bottom Panel

The bottom panel of your SMCD3GNV Wireless Cable Modem Gateway contains a panel for
installing the Gateway’s battery. For information about installing the battery, see “Installing a
Battery” on page 20.

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Getting to Know the Gateway

Using the Reset Button

Using the reset button on the rear panel (see Figure 2 on page 15), you can perform two
types of reset operations with the Gateway:

 Software reset – this reset operation power-cycles the Gateway and retains its current

configuration settings.

 Factory default reset – this operation remove all overrides made to the Gateway’s factory

default configuration and returns the Gateway to its original factory default settings.

The number of seconds you press the reset button determines which reset operation is
performed. To protect against accidental resets, the reset button is recessed on the
Gateway rear panel.

Note: You can also reset the Gateway and retain its current configuration settings using the

RESET method described under “Restoring or Rebooting the Gateway” on page 98.

To use the reset button to perform a software or factory default reset:

1. Leave power plugged into the Gateway.

2. Find the reset button at the top of the back panel, then use a thin object to press and hold
the reset button as follows:

– To perform a software reset, press the reset button for at least 10 seconds.

– To perform a factory default reset, press the reset button for at least 15 seconds.

3. Release the reset button.

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SMCD3GNV Wireless Cable Modem Gateway User Manual

2 Installing the Gateway

This chapter describes how to install your SMCD3GNV Wireless Cable Modem Gateway.
The topics covered in this chapter are:

 Finding a Suitable Location (page 19)

 Installing a Battery (page 20)

 Connecting to the LAN (page 21)

 Connecting the WAN (page 22)

 Powering on the Gateway (page 23)

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Installing the Gateway

Finding a Suitable Location

Your SMCD3GNV Wireless Cable Modem Gateway can be installed in any location with
access to the cable network. All of the cables connect to the rear panel of the Gateway for
better organization and utility. The LED indicators on the front panel are easily visible to
provide you with information about network activity and status.

For optimum performance, the location you choose should:

 Be close to a working AC power outlet when powering the Gateway using AC power.

 Allow at least one foot of space around the sides and top of the Gateway to provide

sufficient air flow around the device.

 Not expose the Gateway to a dusty or wet environment.

 Be an elevated location such as a high shelf, keeping the number of walls and ceilings

between the Gateway and your other devices to a minimum.

 Be away from electrical devices that are potential sources of interference, such as ceiling

fans, home security systems, microwaves, or the base for a cordless phone.

 Be away from any large metal surfaces, such as a solid metal door or aluminum studs.

Large expanses of other materials such as glass, insulated walls, fish tanks, mirrors,
brick, and concrete can also affect your wireless signal. For more information about
selecting an optimum location for wireless operation, see “Guidelines for Improving Your
Wireless Network” on page 201.

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Installing the Gateway

Installing a Battery

To install a battery into the Gateway, use the following procedure.

1. Place the Gateway on its side on a table.

2. Remove battery compartment door on the bottom panel and set it aside (see Figure 4).

Figure 4. Removing the Battery Compartment Door

3. Insert the battery into the battery compartment (see Figure 5).

Figure 5. Installing the Battery

4. Close the battery compartment.

Note: Using the Battery menu in the Gateway’s Web interface, you can view status

information about the battery (see “Viewing Battery Settings” on page 57).

SMCD3GNV Wireless Cable Modem Gateway User Manual

20

Installing the Gateway

Connecting to the LAN

Using an Ethernet LAN cable, you can connect the Gateway to a desktop computer,
notebook, hub, or switch. The Gateway supports auto-MDI/MDIX, so you can use either a
standard straight-through or crossover Ethernet cable.

1. Connect either end of an Ethernet cable to one of the four Ethernet ports on the rear panel

of the Gateway (see Figure 6).

Figure 6. Connecting to an Ethernet Port on the Gateway Rear Panel

2. Connect the other end of the cable to your computer’s network-interface card (NIC) or to
another network device (see Figure 7).

Figure 7. Connecting the Gateway to the a Laptop or Desktop Computer

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Installing the Gateway

Connecting the WAN

To connect the Gateway to a Wide Area Network (WAN) interface:

3. Connect a coaxial cable to the port labeled Cable on the rear panel of the Gateway from a

cable port in your home or office (see Figure 2 on page 15). Use only manufactured coaxial
patch cables with F-type connectors at both ends for all connections.

4. Hand-tighten the connectors to secure the connection.

5. If the modem was not installed by your cable provider (ISP) or is replacing another cable
modem, contact your cable operator to register the SMCD3GNV. If the modem is not
registered with your cable operator, it will be unable to connect to the cable network
system.

Connecting to the Public Telephone Network

The rear panel of the Gateway has two RJ-11 telephone-style connectors labeled Tel 1 and
Tel 2. Each of these connectors can provide telephone service to multiple telephones, fax

machines, and analog modems.

The maximum number of telephone devices connected to each RJ-11 port is limited by the
total Ringing Load of the telephone devices that are connected. Many telephone devices are
marked with a Ringer Equivalent Number (REN). Each telephone port on the Gateway can
support up to a 5 REN load. The sum of the REN load on all of the telephone devices
attached to each port must not exceed 5 REN

Before you use the Gateway’s RJ-11 connectors to power the analog devices in your home
or office, disconnect the telephone lines from any other provider at the demarcation point. If
the incoming phone line is connected to another provider, such as an incumbent telephone
company, it can result in potentially harmful voltage to the analog telephone line.

Note: The customer or the customer's wire contractor is responsible for adhering to all local

codes for wiring.

To set up the ability to place calls using a regular analog telephone line (PSTN), perform the
following procedure.

1. Disconnect the phone lines from any other provider at the demarcation point, if appropriate.

2. Connect the RJ-11 cable on an analog device to the Tel 1 connector on the rear panel of

the Gateway.

3. Connect the RJ-11 cable on another analog device to the Tel 2 connector on the rear

panel of the Gateway.

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Installing the Gateway

Powering on the Gateway

After making your connections, use the following procedure to power on the Gateway:

1. Connect the supplied power cord to the power port on the rear panel of the Gateway (see
Figure 2 on page 15).

2. Connect the other end of the power adapter to a working power outlet. The Gateway

powers on automatically, the POWER LED on the front panel goes ON, and the other front

panel LEDs show the Gateway’s status (see Table 1 on page 14).

WARNING: Only use the power cord supplied with the Gateway. Using a different power cord

can damage the Gateway and void the warranty.

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SMCD3GNV Wireless Cable Modem Gateway User Manual

3 Preconfiguration Guidelines

After you install your SMCD3GNV Wireless Cable Modem Gateway, use the information in
this chapter to configure the TCP/IP settings on the computer that will be used to configure
the Gateway. This chapter also covers other preconfiguration guidelines you should review
before configuring the Gateway.

The topics covered in this chapter are:

 Configuring Your Computer for TCP/IP (page 25)

 Disabling Proxy Settings (page 34)

 Disabling Firewall and Security Software (page 35)

 Confirming the Gateway’s Online Status (page 35)

 Confirming Your Computer’s Link Status (page 35)

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Preconfiguration Guidelines

Configuring Your Computer for TCP/IP

Before you configure the Gateway using its Web management interface, configure TCP/IP
settings on the computer that will be used to configure the Gateway. The TCP/IP procedure
to use depends on the operating system installed on the computer.

 For Microsoft Windows 2000, see the procedure below

 For Microsoft Windows XP, see page 26

 For Microsoft Windows Vista, see page 27

 For Microsoft Windows 7, see page 30

 For Apple Macintosh, see page 33

Configuring Microsoft Windows 2000

Use the following procedure to configure your computer if your computer has Microsoft
Windows 2000 installed.

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

2. In the Control Panel window, double-click the Network and Dial-up Connections icon. If
the Ethernet adapter in your computer is installed correctly, the Local Area Connection

icon appears.

3. Double-click the Local Area Connection icon for the Ethernet adapter connected to the

Gateway. The Local Area Connection Status dialog box appears (see Figure 8).

Figure 8. Local Area Connection Status Window

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Preconfiguration Guidelines

4. In the Local Area Connection Status dialog box, click the Properties button. The Local

Area Connection Properties dialog box appears.

5. In the Local Area Connection Properties dialog box, verify that Internet Protocol (TCP/IP)
is checked. Then select Internet Protocol (TCP/IP) and click the Properties button.

6. Click Obtain an IP address automatically to configure your computer for DHCP.

7. Click the OK button to save this change and close the Local Area Connection Properties

dialog box.

8. Click OK button again to save these new changes.

9. Restart your computer.

Configuring Microsoft Windows XP

Use the following procedure to configure your computer if your computer has Microsoft
Windows XP installed. If you use the Classic interface, where the icons and menus resemble
previous Windows versions, perform the procedure under “Configuring Microsoft Windows
2000” on page 25.

1. On the Windows taskbar, click Start, click Control Panel, and then click Network and
Internet Connections.

2. Click the Network Connections icon.

3. Click Local Area Connection for the Ethernet adapter connected to the Gateway. The

Local Area Connection Status dialog box appears.

4. In the Local Area Connection Status dialog box, click the Properties button (see Figure 9).

The Local Area Connection Properties dialog box appears.

Figure 9. Local Area Connection Status Window

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SMCD3GNV Wireless Cable Modem Gateway User Manual

Preconfiguration Guidelines

5. In the Local Area Connection Properties dialog box, verify that Internet Protocol (TCP/IP)
is checked. Then select Internet Protocol (TCP/IP) and click the Properties button. The

Internet Protocol (TCP/IP) Properties dialog box appears.

6. In the Internet Protocol (TCP/IP) Properties dialog box, click Obtain an IP address
automatically to configure your computer for DHCP. Click the OK button to save this

change and close the Internet Protocol (TCP/IP) Properties dialog box.

7. Click the OK button again to save your changes.

8. Restart your computer.

Configuring Microsoft Windows Vista

Use the following procedure to configure a computer running Microsoft Windows Vista with
the default interface. If you use the Classic interface, where the icons and menus resemble
previous Windows versions, perform the procedure under “Configuring Microsoft Windows
2000” on page 25.

1. On the Windows taskbar, click Start, click Control Panel, and then select Network and
Internet Icon.

2. Click View Networks Status and tasks and then click Management Networks
Connections.

3. Right-click the Local Area Connection icon and click Properties.

4. Click Continue. The Local Area Connection Properties dialog box appears.

5. In the Local Area Connection Properties dialog box, verify that Internet Protocol

(TCP/IPv4) is checked. Then select Internet Protocol (TCP/IPv4) and click the
Properties button (see Figure 10). The Internet Protocol Version 4 Properties dialog box

appears.

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Preconfiguration Guidelines

Figure 10. Local Area Connection Properties Window

6. In the Internet Protocol Version 4 Properties dialog box, click Obtain an IP address
automatically to configure your computer for DHCP (see Figure 11).

Figure 11. Internet Protocol Properties Window

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Preconfiguration Guidelines

7. Click the OK button to save your changes and close the dialog box.

8. Click the OK button again to save your changes.

Figure 12. Local Area Connection Status Window

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Preconfiguration Guidelines

Configuring Microsoft Windows 7

Use the following procedure to configure a computer running Microsoft Windows 7.

1. In the Start menu search box, type: ncpa.cpl

Figure 13. Typing ncpa.cpl in the Start Menu Box

The Network Connections List appears.

Figure 14. Example of Network Connections List

2. Right-click the Local Area Connection icon and click Properties.

3. In the Networking tab, click either Internet Protocol Version 4 (TCP/IPv4) or Internet
Protocol Version 6 (TCP/IPv6), and then click Properties.

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Figure 15. Local Area Network Connection Properties Dialog Box

4. In the properties dialog box, click Obtain an IP address automatically to configure your

computer for DHCP (see Figure 16).

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Preconfiguration Guidelines

Figure 16. Properties Window

5. Click the OK button to save your changes and close the dialog box.

6. Click the OK button again to save your changes.

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Preconfiguration Guidelines

Configuring an Apple® Macintosh® Computer

The following procedure describes how to configure TCP/IP on an Apple Macintosh running
Mac OS 10.2. If your Apple Macintosh is running Mac OS 7.x or later, the steps you perform
and the screens you see may differ slightly from the following. However, you should still be
able to use this procedure as a guide to configuring your Apple Macintosh for TCP/IP.

1. Pull down the Apple Menu, click System Preferences, and select Network.

2. Verify that NIC connected to the SMCD3GNV is selected in the Show field.

3. In the Configure field on the TCP/IP tab, select Using DHCP (see Figure 17).

4. Click Apply Now to apply your settings and close the TCP/IP dialog box.

Figure 17. Selecting Using DHCP in the Configure Field

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Preconfiguration Guidelines

Disabling Proxy Settings

Disable proxy settings in your Web browser. Otherwise, you will not be able to view the
Gateway’s Web-based configuration menus.

Disabling Proxy Settings in Internet Explorer

The following procedure describes how to disable proxy settings in Internet Explorer 5 and
later.

1. Start Internet Explorer.

2. On your browser’s Tool menu, click Options. The Internet Options dialog box appears.

3. In the Internet Options dialog box, click the Connections tab.

4. In the Connections tab, click the LAN settings button. The Local Area Network (LAN)

Settings dialog box appears.

5. In the Local Area Network (LAN) Settings dialog box, uncheck all check boxes.

6. Click OK until the Internet Options window appears.

7. In the Internet Options window, under Temporary Internet Files, click Settings.

8. For the option Check for newer versions of stored pages, select Every time I visit the
webpage.

9. Click OK until you close all open browser dialog boxes.

Disabling Proxy Settings in Firefox

The following procedure describes how to disable proxy settings in Firefox.

1. Start Firefox.

2. On your browser’s Tools menu, click Options. The Options dialog box appears.

3. Click the Advanced tab.

4. In the Advanced tab, click the Network tab.

5. Click the Settings button.

6. Click Direct connection to the Internet.

7. Click the OK button to confirm this change.

SMCD3GNV Wireless Cable Modem Gateway User Manual

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Preconfiguration Guidelines

Disabling Proxy Settings in Safari

The following procedure describes how to disable proxy settings in Safari.

1. Start Safari.

2. Click the Safari menu and select Preferences.

3. Click the Advanced tab.

4. In the Advanced tab, click the Change Settings button.

5. Choose your location from the Location list (this is generally Automatic).

6. Select your connection method. If using a wired connection, select Built-in Ethernet. For
wireless, select Airport.

7. Click the Proxies tab.

8. Be sure each proxy in the list is unchecked.

9. Click Apply Now to finish.

Disabling Firewall and Security Software

Disable any firewall or security software that may be running on your computer. For more
information, refer to the documentation for your firewall. After you configure the Gateway,
please re-enable your computer firewall.

Confirming the Gateway’s Online Status

Confirm that the Online LED on the Gateway front panel is ON (see Figure 1 on page 13). If

the LED is OFF, replace the coaxial cable connecting the Gateway to the cable service. If

the Online LED does not go ON after several minutes, please contact your cable provider to

confirm that the service is active.

Confirming Your Computer’s Link Status

Be sure there is an Ethernet cable connecting your computer to the Gateway. Then confirm
that the LEDs for the Gateway port connected to your computer are blinking. If the LEDs are
OFF, the connection between your computer and Gateway is not working properly.

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4 Configuring the Gateway

After configuring your computer for TCP/IP and following the preconfiguration guidelines in
Chapter
chapter describes how to use your computer’s Web browser to configure the Gateway.

The topics covered in this chapter are:

 Accessing the Gateway’s Web Management (page 37)

 Understanding the Web Management Interface Menus (page 38)

3, use that computer’s Web browser to configure your SMCD3GNV Gateway. This

 Web Management Interface Menus (page 40)

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Accessing the Gateway’s Web Management

After configuring your computer for TCP/IP and reviewing the guidelines on the previous
page, configure the Gateway using its Web-based management interface. From your Web
browser, log in to the interface to define system parameters, change password settings, view
status windows to monitor network conditions, and control the Gateway and its ports.

To display the SMCD3GNV Wireless Cable Modem Gateway’s Web-based management
screens, use the following procedure.

1. Launch a Web browser.

Note: Your computer does not have to be online to configure the Gateway.

2. In the browser address bar, type
appears (see Figure 18).

http://10.0.0.1 and press the Enter key. The Login screen

Figure 18. Login Screen

3. In the Login User Password screen, enter the default username cusadmin and the default
password highspeed. Both are case sensitive. For security, each password character

appears as a dot (●). After you log in, we recommend you change the default password on
the Change Password menu (see “Changing the Login Password” on page 99).

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Configuring the Gateway

Note: Your cable modem operator may customize the login password, so please check with

your operator for the correct password to use.

4. Click the LOGIN button to access the Gateway’s Web interface. The At a Glance menu

appears, showing connection status information about the Gateway. You can also display

this menu any time by clicking At a Glance in the menu bar.

Understanding the Web Management Interface Menus

The left side of the management interface contains a menu bar for selecting menus to
configure the Gateway. When you click a menu, information and any configuration settings
associated with the menu appear in the main area (see Figure 19). If the displayed
information exceeds the main area, scroll bars appear to the right of the main area so you
can scroll up and down through the information.

The top of the main area shows the path (or “breadcrumb”) associated with the information

displayed in the main area. For example, if you click the Status submenu in the Connection
menu, Connection > Status appears at the top of the main area.

The top-right area shows the username used to log in to the Web interface, along with links
for changing the login password and logging out of your current session.

Below the login user name and links are status icons that show the:

 Percentage of battery power remaining

 Gateway’s Internet access

 Status of the Gateway’s wireless connection

 Firewall security level

A control panel at the bottom of the menu provides links for accessing comcast.net, help,
security, smartzone, and customer central.

Username

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Logout and Change

Menu bar

Configuring the Gateway

Password Buttons

Status icons

Main area

Control Panel

Figure 19. Main Areas on the Web Management Interface

Some menus in the menu bar have submenus associated with them. If you click a menu that
has submenus, the submenus appear below the menu. For example, if you click the

Connection menu, the submenus in Figure 20 appear.

Figure 20. Example of Connection Submenus

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Configuring the Gateway

Web Management Interface Menus

Table 4 describes the menus in the Web management interface.

Table 4. Web Management Interface Menus and Submenus

Menus and Submenus Description See Page

At a Glance Lets you view information about your home network, connected

42

devices, and recent network updates.

Connection Displays submenus that let you:

Connection > Status

• View and edit settings for the local IP network, and view the settings

44

of the Wi-Fi network and Comcast network.

Connection > Comcast Network

• View Comcast network settings and initialization procedures,

46

including cable modem, downstream, and upstream information.

Connection > Local IP Network

Connection > WiFi

Firewall

Ssoftware

Hardware > System Hardware

Hardware > Battery

Hardware > LAN

• View and reset your local IPv4 and IPv6 settings.

• View and edit the Gateway’s basic and advanced wireless settings.

• Configure the security level of the Gateway’s internal firewall.

• View system software information.

• View information about the Gateway system hardware.

• View information about the Gateway’s internal battery.

• View the link status and Media Access Control (MAC) address for

47

49

53

55

56

57

58

each of the four Gateway Ethernet ports.

Hardware > WiFi

Wizard

• View the status and MAC address of the Gateway’s Wi-Fi port.

• Use a wizard to set up your home network.

59

60

Connected Devices Displays the Computer submenu for adding online computers and viewing computers

that are offline.

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Configuring the Gateway

Table 4. Web Management Interface Menus and Submenus

Menus and Submenus Description See Page

Parental Control Displays submenus that let you configure the Gateway for:

Parental Control > Managed Sites

Parental Control > Managed Services

Parental Control > Managed Devices

Parental Control > Reports

• Blocked sites, blocked keywords, and trusted computers.

• Blocked services and trusted computers.

• Managed and blocked devices.

• Generating reports containing selected Log Messages generated

during the user-defined timeframe.

Advanced Displays submenus that let you:

Advanced > Port Forwarding

Advanced > Port Triggering

Advanced > Port Blocking

Advanced > Device Discovery

• Enable or disable the Gateway’s port forwarding feature.

• Enable or disable the Gateway’s port triggering feature.

• Enable or disable the Gateway’s port blocking feature.

• Enable or disable the Gateway’s Universal Plug and Play (UPnP)

feature for dynamic connectivity to devices on the network.

Troubleshooting Displays submenus that let you:

Troubleshooting > Logs Configure log filters, and download and print system logs.

Troubleshooting > Disanostic Tools Tests connectivity to a destination or IP address.

Troubleshooting > Restore/Reboot Gateway Reset the Gateway, reset the Wi-Fi router only, or restore factory

settings.

Troubleshooting > Change Password Change the password used to log in to the Gateway’s Web interface.

68

75

78

82

84

87

91

92

94

96

98

99

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Configuring the Gateway

Viewing Information About Your Network and Connected Devices

The At a Glance menu appears when you log in to the Gateway’s Web interface. You can

also display this menu by clicking Gateway in the menu bar. Figure 21 shows an example of

the At a Glance menu and Table 5 describes the menu.

Figure 21. Example of the At a Glance Menu

Table 5. At a Glance Menu

Option Description

Home Network Shows the status of your home network’s Ethernet and Wi-Fi home status. A green check mark indicates normal

Connected
Devices

Recent Network
Updates

operation. This area also shows the Gateway’s firewall security level. To change this level, see “Configuring

Firewall Settings” on page 53.
Shows the names of the devices connected to the Gateway. A Co nnected Devi ces button opens the Computers

menu for viewing devices that the Gateway automatically detects using DHCP (see page 64).

Displays alert and warning information. A drop-down list lets you view this information for today, yesterday, this
week, or this month.

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Configuring the Gateway

Viewing Information About Your Network and Connections

Using the Gateway menu, you can:

 View and edit settings for the local IP network, and view Wi-Fi and Comcast network

status. See page 44.

 View Comcast network settings and initialization procedures, including cable modem,

downstream, and upstream information. See page 46.

 Configure IPv4 or IPv6 settings for the Gateway. See page 47.

 View and edit basic and advanced wireless settings. See page 49.

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Configuring the Gateway

Viewing the Gateway’s Connection Status

The Status menu lets you view and edit the settings for your local IP network. You can also
use this menu to view the status of the Wi-Fi network and Comcast network.

To display the Status menu, click Connection in the menu bar, and then click the Status

submenu. Figure 22 shows an example of the Status menu and Table 6 describes the menu.

Figure 22. Example of the Status Menu

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Configuring the Gateway

Table 6. Status Menu

Option Description

Local IP Network Displays information about the local network. The EDIT button opens the Local IP

WiFi Network Lets you view information about your Wi-Fi network. A VIEW button opens the WiFi menu for

Comcast Network Lets you view information about the Comcast network. A VIEW button opens the Comcast

Configuration menu for viewing and changing IPv4 or IPv6 settings (see “Viewing and Editing
Your Local IP Configuration” on page 47).

viewing the link status and MAC address of the Gateway’s WiFi LAN port (see “Viewing Wi-Fi
Settings” on page 59).

Network menu for viewing the initialization procedures, including cable modem, downstream,
and upstream information (see “Viewing Comcast Network Information” on page 46).

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Configuring the Gateway

Viewing Comcast Network Information

The Comcast Network menu lets you view settings for the Comcast network. This menu also
shows information about the Gateway’s initialization procedures, cable modem settings, and
downstream and upstream information. The information shown on this menu automatically
updates (refreshes) every 10 seconds.

To display the Comcast Network menu, click Gateway in the menu bar, and then click the
Connection and Comcast Network submenus. Figure 23 shows an example of the

Comcast Network menu.

Figure 23. Example of Comcast Network Menu

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Configuring the Gateway

Viewing and Editing Your Local IP Configuration

The Local IP Configuration menu lets you view and change the Internet Protocol (IP)
settings used by the Gateway. Fields are provided for configuring IP version 4 (IPv4) and the
newer IP version 6 (IPv6).

To display the Local IP Configuration menu, click Connection in the menu bar, and then
click the Local IP Network submenu. Figure 24 shows an example of the Local IP

Configuration menu and Table 7 describes the menu.

Figure 24. Example of Local IP Configuration Menu

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Configuring the Gateway

Table 7. Local IP Configuration Menu

Option Description

IPv4

(for computers that use IPv4 Messaging)

Gateway Address IPv4 IP address that the Gateway is to use.

Subnet Mask IPv4 subnet mask that the Gateway is to use.

DHCP Beginning Address Starting IP address range for the pool of allocated for DHCP IP addresses. The first two fields

match the first two octets in the Gateway’s IP address and cannot be changed. The last two
fields let you enter the final two octets in the starting IP address range.

DHCP Ending Address Ending IP address range for the pool of allocated for DHCP IP addresses. The first two fields

match the first two octets in the Gateway’s IP address and cannot be changed. The last two
fields let you enter the final two octets in the ending IP address range.

DHCP Lease Time Amount of time a DHCP network user is allowed connection to the Gateway with their current

dynamic IP address. Default is One Week.

SAVE SETTINGS button After configuring your IPv4 settings, click this button to save them.

RESTORE DEFAULT SETTINGS

Resets the Gateway to the factory default IPv4 settings.

FOR IPV4 button

IPv6

(for computers that use IPv6 Messaging)

Enable IPv6 Check this box to configure the Gateway to use IPv6 settings.

Gateway Address IPv6 IP address that the Gateway is to use.

Subnet Mask IPv6 subnet mask that the Gateway is to use.

DHCP Beginning Address Starting IP address range for the pool of allocated for DHCP IP addresses. The first two fields

match the first two octets in the Gateway’s IP address and cannot be changed. The last two
fields let you enter the final two octets in the starting IP address range.

DHCP Ending Address Ending IP address range for the pool of allocated for DHCP IP addresses. The first two fields

match the first two octets in the Gateway’s IP address and cannot be changed. The last two
fields let you enter the final two octets in the ending IP address range.

DHCP Lease Time Amount of time a DHCP network user is allowed connection to the Gateway with their current

dynamic IP address. Default is One Week.

IPv6 Mode Select the IPv6 mode that the Gateway is to use. Choices are:

• link-local only = allows communication among nodes attached to the same link. Packets

are not forwarded outside the site. (default)

• site-local only = allows communication among nodes within a site or organization.

SAVE SETTINGS button After configuring your IPv6 settings, click this button to save them.

RESTORE DEFAULT SETTINGS
FOR IPV6 button

SMCD3GNV Wireless Cable Modem Gateway User Manual

Resets the Gateway to the factory default IPv6 settings.

48

Configuring the Gateway

Viewing and Editing Wireless Configuration

The Wireless menu lets you view and change the Gateway’s basic and advanced wireless

settings. To display the Wireless menu, click Gateway in the menu bar, and then click the
Connection and WiFi submenus. Figure 25 shows an example of the Local IP Configuration

menu and Table 8 describes the menu.

Figure 25. Example of Wireless Menu

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Configuring the Gateway

Table 8. Wireless Menu

Option Description

Private Wireless Network

Name
MAC Address

Shows the name MAC address, and security setting, if any, for each private wireless network

detected. An EDIT button is provided to change these settings.

Security Mode

Private Wireless Basic Setting

Mode Choices are:

• 802.11 b/g = use this setting if you have a combination of IEEE 802.11b and IEEE 802.11g

devices on your network.

• 802.11n = use this setting if you have only IEEE 802.11n devices on your network or want

to limit your network to IEEE 802.11n devices.

• 802.11 b/g/n = use this setting if you have a combination of IEEE 802.11b, IEEE 802.11g,

and IEEE 802.11n devices on your network. (default)

Channel Selection Select how the Gateway will select a channel for communicating over the wireless network.

Choices are:

• Automatic = the Gateway selects the channel automatically. (default)

• Manual = the Gateway uses the channel specified in the Channel option.

Channel If the Channel Selection option is Manual, specify the appropriate channel from the list

provided to correspond with your network settings. Choices are 1, 6, and 11. The default
setting is 6, which refers to radio frequency ranges within the 2.4 GHz range. You can change
this setting if necessary; however, all devices in your wireless network must use the same
channel to work properly.

SAVE BASIC SETTING button Click this button to save your changes to the private wireless basic settings.

Private Wireless Advanced Setting

BG Protection Mode This mode is a protection mechanism that prevents collisions among 802.11b/g modes.

Choices are:

• Auto = BG protection mode goes on or off automatically as needed.

• Always-On = BG protection mode is always on.

• Always-Off = BG protection mode is always off. (default)

IGMP Snooping Enables or disables the Gateway from forwarding multicast traffic intelligently.

• Enable = Gateway listens to IGMP membership reports, queries, and leave messages to

identify the Gateway ports that are members of multicast groups. Multicast traffic will only
be forwarded to ports identified as members of the specific multicast group or groups.

• Disable = Gateway does not analyze all IGMP packets. (default)

Operation Mode Lets you select between Mixed Mode and Green Field.

• Mixed Mode = provides backward compatibility with IEEE 802.11n/a/g/b devices. (default)

• Green Field = used for pure network of 802.11n access points and clients, taking full

advantage of the high-throughput capabilities of the 11n multiple-input multiple-output
(MIMO) architecture.

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Option Description

Channel Bandwidth Select a channel bandwidth of 20 or 20/40.

• 20 = allows only single-channel operation (e.g., 20 MHz).

• 20/40 = allows both single channel operation (20 MHz) and the wider bandwidth operation

(40 MHz) by using two or more adjacent (contiguous channels). A 20/40 BSS is a wireless

network that allows a wider bandwidth operation mode. (default)

Guard Interval The guard interval is the period in nanoseconds that the Gateway listens between packets.

Choices are:

• Long = 800 ns guard interval.

• Short = 400 ns guard interval. (default)

MCS Modulation Coding Scheme (MCS) is a specification of PHY parameters consisting of

modulation order (BPSK, QPSK, 16-QAM, 64-QAM) and FEC code rate (1/2, 2/3, 3/4, 5/6).
MCS is used in the Gateway to define 32 symmetrical settings. MCS provides for potentially
greater throughput. High throughput data rates are a function of MCS, bandwidth, and guard
interval. Default is auto.

Reverse Direction Grant (RDG) Speeds up data transmission between the Gateway and 802.11n access points and clients by

allowing wireless workstations to send/receive data simultaneously, without contending for
shared medium. Default is enable.

Extension Channel Defines a second 20-MHz channel. 40-MHz stations can use this channel in addition to using

the control channel simultaneously.

Aggregation MSDUA (A-MSDU) Enables or disables aggregation of multiple MSDUs in one MPDU. Default is disable.

Auto-Block Ack Enables or disables Auto Block ACL function. Default is enable.

Decline BA Request Enables or disables the BA request function. Default is disable.

HT Tx Stream Select 1 or 2 from the pull-down menu. Default is 2.

HT Rx Stream Select 1 or 2 from the pull-down menu. Default is 2.

WMM Power Save When checked, enables the Gateway’s power-management features for optimizing battery

life. Default is checked.

STBC Space Time Block Coding (STBC) is an 802.11n technique intended to improve the reliability

of data transmissions. With STBC, the data stream is transmitted on multiple antennas, so the
receiving system has a better chance of detecting at least one of the data streams. Choices
are:

• Disable = Gateway does not transmit the same data on multiple antennas. (default)

• Enable = Gateway transmits the same data stream on multiple antennas at the same time.

SAVE ADVANCED SETTING button Click this button to save your changes to the private wireless advanced settings.

WiFi Client Setup Configuration (WP5)

WPS Lets you enable or disable Wi-Fi Protected Setup (WPS) on the Gateway. Default is disabled.

Security A read-only field that shows security information.

Encryption A read-only field that shows the encryption method, if any, used.

WPA Passphrase A read-only field that shows the WPA passphrase used by the Gateway. The passphrase is a

sequence of words or text that can be used to automatically generate WEP keys.

WPS Configured A read-only field that whether WPS has been configured.

AP PIN A read-only field that shows the personal identification number (PIN) for the access point.

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Option Description

Connect to Your WPS-supported Device

Push Button Click this option to use the WPS button on the top panel of the Gateway to configure WPS

PIN Number Click this option if you need to enter a PIN to configure WPS.

Enter Wireless Client’s PIN If you clicked PIN Number, enter the PIN in this field.

Pair with my WiFI Client Click this button to pair (connect) the Gateway’s Wi-Fi settings with your Wi-Fi client.

(see Figure 3).

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Configuring the Gateway

Configuring Firewall Settings

The Firewall menu lets you view and edit the settings for the Gateway’s internal firewall. The
setting you select here is displayed at the top-right area of the Gateway’s Web interface.

To display the Firewall menu, click Gateway in the menu bar, and then click the Firewall

submenu. Figure 26 shows an example of the Firewall menu and Table 9 describes the
menu.

Figure 26. Example of the Firewall Menu

Table 9. Firewall Menu

Option Description

Maximum Security (High) Configures the Gateway’s firewall to the highest setting. Select this setting for environments

Typical Security (Medium) Configures the Gateway’s firewall for typical (medium) security. Select this setting for

Minimum Security (Low) Configures the Gateway’s firewall for minimum (low) security. Select this setting for

Custom Security Clicking this option displays the custom security settings in Figure 27. For more information,

SAVE SETTINGS button After configuring your firewall settings, click this button to save them.

RESTORE DEFAULT SETTINGS
button

SMCD3GNV Wireless Cable Modem Gateway User Manual

where security is critical.

environments where security is important.

environments where security is not important.

see Table 10.

Resets the Gateway to the factory default firewall settings.

53

Configuring the Gateway

Figure 27. Custom Firewall Security Settings

Table 10. Custom Security Settings

Option Description

Block http Blocks Hypertext Transfer Protocol (HTTP) downloads on ports 80 and 443.

Block ICMP Blocks Internet Control Message Protocol (ICMP) traffic at the outer perimeter of the Gateway

Block Multicast Blocks unsolicited multicast packets.

Block Peer-to-peer application Blocks peer-to-peer applications

Block IDENT Blocks identification (Ident) requests from Ident servers on port 113.

Disable entire firewall Disables all of the Gateway’s firewall settings.

to protect against attacks such as cascading ping floods.

Note: Port 113 is associated with Ident. If a client program on a computer connected to the
Gateway contacts a remote server for services such as POP, IMAP, SMTP, or IRC, the
remote server returns a query to the “Ident” server running in many systems listening for
these queries on port 113. Essentially, the remote server is asking your system to identify
itself and you. This means that port 113 is often probed by attackers as a source of your
personal information.

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Configuring the Gateway

Viewing System Software Settings

The Software menu is a read-only screen that shows the software version and packet cable
version associated with the Gateway.

To display the Software menu, click Gateway in the menu bar, and then click the Software

submenu. Figure 28 shows an example of the Software menu.

Figure 28. Example of the Software Menu

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Configuring the Gateway

Configuring System Hardware

Using the Hardware menu, you can:

 View system hardware information. See page 56.

 View information about the Gateway’s internal battery. See page 57.

 View the link status and Media Access Control (MAC) address for all four Gateway

Ethernet ports. See page 58.

 View the status and MAC address of the Gateway’s Wi-Fi port. See page 59.

Viewing System Hardware Settings

The System Hardware menu is a read-only screen that shows the Gateway’s system
hardware.

To display the System Hardware menu, click Gateway in the menu bar, and then click the
Hardware and System Hardware submenus. Figure 29 shows an example of the System

Hardware menu.

Figure 29. Example of the System Hardware Menu

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Configuring the Gateway

Viewing Battery Settings

The Battery menu is a read-only screen that shows information about the Gateway’s internal
battery.

To display the Battery menu, click Gateway in the menu bar, and then click the Hardware
and Battery submenus. Figure 30 shows an example of the Battery menu.

Figure 30. Example of the Battery Menu

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Configuring the Gateway

Viewing LAN Ethernet Settings

The LAN Ethernet menu is a read-only screen that shows the link status and MAC address
of the Gateway’s four Ethernet ports.

To display the LAN Ethernet menu, click Gateway in the menu bar, and then click the

Hardware and LAN submenus. Figure 31 shows an example of the LAN Ethernet menu.

Figure 31. Example of the LAN Ethernet Menu

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Configuring the Gateway

Viewing Wi-Fi Settings

The WiFi menu is a read-only screen that shows the Wi-Fi link status and MAC address of
the Gateway’s WiFi port.

To display the WiFi menu, click Gateway in the menu bar, and then click the Hardware and

WiFi submenus. Figure 32 shows an example of the WiFi menu.

Figure 32. Example of the WiFi Menu

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Configuring the Gateway

Configuring Your Home Network

The Home Network Wizard menu is part of a 2-page wizard you can use to configure your
home network.

To display the first page of the Home Network Wizard, click Gateway in the menu bar, and
then click the Wizard submenu. Figure 33 shows an example of the first page of the Home

Network Wizard and Table 11 describes the page.

Figure 33. Example of the First Page of the Home Network Wizard

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Table 11. Home Network Wizard – Step 1

Option Description

Gateway Name The name you want to assign to the Gateway. Assign a name so that this device will not be

Current Password Enter the current case-sensitive password. For security purposes, every typed character

New Password Enter the new password you want to use. The password is case sensitive and can contain

Re-enter New Password Enter the same case-sensitive administrator password you typed in the New Password field.

NEXT PAGE button Click this button to display the second page of the Home Network Wizard (see Figure 34 and

confused with other devices on your wireless network. We recommend you use a name that is
meaningful to you so you can identify the Gateway easily. The Gateway name is case
sensitive and can contain from 8 to 20 alphanumeric characters, but no spaces.

appears as a dot (). The default password is not shown for security purposes. The password
is case sensitive and can contain from 8 to 20 alphanumeric characters, but no spaces.

from 8 to 20 alphanumeric characters, but no spaces. Spaces count as password characters.
For security purposes, every typed character appears as a dot ().

For security purposes, every typed character appears as a dot ().

Table 12).

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Figure 34. Example of the Second Page of the Home Network Wizard

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Table 12. Home Network Wizard – Step 2

Option Description

Enter WiFI Network Name Enter the name of your wireless network (typically, the SSID). The Wi-Fi name will make it

Encryption Method The default selection of OPEN means your wireless transmissions are not protected. To

Enter Network Password If you select one of the WEP or WPA encryption settings, enter the password used for

Radius Server Address IP address of the Remote Authentication Dial In User Service (RADIUS) server.

Radius Server Port Port number that RADIUS uses for authentication. Default is 1812.

FINISH button Click this button to complete the Home Network Wizard.

more obvious for others to know which network they are connecting to.

prevent other computers in the area from using your Internet connection, secure your wireless
network by selecting an encryption method from this drop-down list. There are several
encryption methods for wireless settings, including:

• WEP = basic encryption and therefore least secure (i.e., it can be easily cracked, but is

compatible with a wide range of devices including older hardware).

• WPA (WPA-Personal) = one of the highest levels of wireless security for your network.

Select this option if your wireless adapters support WPA.

• WPA-2 (Wi-Fi Protected Access version 2) = second generation of WPA. Select this option

if your wireless adapters support WPA2.

• WPA-Enterprise = provides extremely strong wireless security and adds authentication to

WEP's basic encryption. This option is mainly suited for enterprise users, not home users,
and can be selected if your wireless adapters support WPA-Enterprise.

encryption and decryption.

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Working with Connected Devices

Using the Computers menu, you can:

 View the computers that the Gateway has discovered using DHCP or Home Network

Administration Protocol (HNAP).

 Manually add computers with static IP addresses to the wireless network.

 Edit computers with static IP addresses

 Disconnect online and offline computers from the wireless network.

To display the Computers menu, click Connected Devices in the menu bar. Figure 35

shows an example of the Computers menu.

Figure 35. Example of the Computers Menu

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Manually Adding Computers with Static IP Addresses to the Wireless Network

To manually add a computer with a static IP address to your wireless network:

5. Under Online Computers, click the ADD COMPUTER WITH STATIC IP button. The Add

Computer menu appears (see Figure 36).

6. Complete the fields in the Add Computer menu (see Table 13).

7. Click SAVE to save your settings (or click CANCEL to discard them). If you click SAVE,
the Computer menu reappears, with the computer you added displayed under Offline
Computers.

8. To add more computers with static IP addresses, repeat steps 1 through 3.

9. To edit an online computer, click the EDIT button next to the computer you want to modify,
edit the settings on the Edit Computer menu (see Figure 37), and click SAVE.

10. To delete an online or offline computer, click the X next to the computer. When the Delete
Computer message appears, click OK to delete the computer or CANCEL to retain it. If
you clicked OK, the computer is removed from the Computers menu.

Figure 36. Example of the Add Computer Menu

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Table 13. Add Computer Menu

Option Description

Host Name Host name of the computer you want to add.

Connection Read-only field that displays shows the network connection of Ethernet.

MAC Address MAC address of the computer you want to add. Add a colon between each 2-character ID in

Static IP Address Static IP address of the computer you want to add. Add a period between each octet in the IP

Comments Optional comments about the computer.

SAVE button Click this button to save your settings.

CANCEL button Click this button to discard your settings on the Add Computer menu.

the MAC address. For information about obtaining the MAC address of a computer, see
“Determining a Computer’s MAC Address” on page 196.

address.

Figure 37. Example of the Edit Computer Menu

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Table 14. Edit Computer Menu

Option Description

Host Name Read-only field that shows the host name of the computer you selected.

Connection Read-only field that displays shows the network connection of Ethernet.

Configuration Select whether the selected computer should be discovered by the Gateway using DHCP or a

MAC Address Edit the MAC address of the selected computer. Add a colon between each 2-character ID in

Static IP Address If you selected Static IP for Configuration, enter the computer’s static IP address. Add a

Comments Optional comments about the computer.

SAVE button Click this button to save your settings.

CANCEL button Click this button to discard your settings on the Edit Computer menu.

static IP address. If you select Static IP, enter the static IP address in the Static IP Address

field.

the MAC address.

period between each octet in the IP address.

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Configuring Parental Controls

Regulating Web browsing can prevent children and workers from accessing dangerous
content on the Internet, or having to make judgment calls over suitable relationships in chat­rooms. The fact is, Web sites, chat-room users, and downloaded programs may not have
the best interests of you, your family, or your workers at heart. The unscrupulous may try to
manipulate the people you care about or try to gain trust, which may result in unacceptable
access to your family, your coworkers, your computer, or personal information.

Using the Parental Controls menu, you can prevent access to unwanted Web content by:

 Blocking sites and keywords. See page 68.

 Blocking services. See page 75.

 Blocking devices and access types. See page 78.

You can also define report filters and generate reports. See page 82.

Blocking Sites and Keywords, and Selecting Trusted Computers

Using the Managed Sites menu, you can block access to certain Web sites from local

computers. To display the Managed Sites menu, click Parental Control in the menu bar.

Figure 38 shows an example of the Managed Sites menu.

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Figure 38. Example of Managed Sites Menu

Blocking Sites

To block sites:

11. If the Managed Sites menu is not displayed, click Parental Control in the menu bar.

12. Next to Enabled Managed Sites, click Enabled.

13. Under Blocked Sites, click ADD. The Add Blocked Domain menu appears (see Figure

39).

14. Complete the fields in the Add Blocked Domain menu (see Table 15).

15. Click SAVE (or click CANCEL to discard your settings). If you clicked SAVE, the blocked
site appears below Blocked Sites on the Managed Sites menu.

16. To block additional sites, repeat steps 3 through 5.

17. To edit a blocked site, click the EDIT button next to the blocked site you want to modify,
edit the settings on the Add Blocked Domain menu (see Table 15), and click SAVE.

18. To delete a blocked site, click the X next to the site. When the Delete URL Block Rule
message appears, click OK to delete the blocked URL or CANCEL to retain it. If you
clicked OK, the URL is removed from the Blocked Sites area on the Managed Sites

menu.

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Figure 39. Add Blocked Domain Menu

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Table 15. Add Blocked Domain Menu

Option Description

URL Enter the URL you want blocked.

Always Block? Select whether you want the Gateway to always block this URL. Choices are

• No = the Gateway does not always block this URL. Use the Set Block Time and Set

Blocked Days to instruct the Gateway when to block this URL.

• Yes = the Gateway always blocks this URL until you remove the block. (default)

Set Block Time

Start from If you selected No for Always Block?, select the time when the Gateway is to start blocking

this URL.

End on If you selected No for Always Block?, select the time when the Gateway is to stop blocking

this URL.

Set Blocked Days

Select All Click this link to select all seven days. This link is not available if you selected Yes for Always

Block?

Select None Click this link to deselect all seven days. This link is not available if you selected Yes for

Always Block?

Monday – Sunday Check the check boxes that correspond to the days when you want the Gateway to block this

URL. These checkboxes are not available if you selected Yes for Always Block?

SAVE button Click this button to save your settings.

CANCEL button Click this button to discard your settings on the Add Blocked Domain menu.

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Blocking Keywords

To block keywords:

19. If the Managed Sites menu is not displayed, click Parental Control in the menu bar.

20. Next to Enabled Managed Sites, click Enabled.

21. Under Blocked Keywords, click ADD. The Add Blocked Keyword menu appears (see

Figure 40).

22. Complete the fields in the Add Blocked Keyword menu (see Table 16).

23. Click SAVE (or click CANCEL to discard your settings). If you clicked SAVE, the blocked
keyword appears below Blocked Keywords on the Managed Keywords menu.

24. To block additional keywords, repeat steps 3 through 5.

25. To edit a blocked keyword, click the EDIT button next to the blocked keyword you want to

modify, edit the settings on the Add Blocked Keyword menu (see Table 16), and click

SAVE.

26. To delete a blocked keyword, click the X next to the keyword. When the Delete Keyword
Block Rule message appears, click OK to delete the blocked keyword or CANCEL to retain
it. If you clicked OK, the keyword is removed from the Blocked Keywords area on the

Managed Keywords menu.

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Figure 40. Add Blocked Keyword Menu

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Table 16. Add Blocked Keyword Menu

Option Description

Keyword Enter the keyword you want blocked.

Always Block? Select whether you want the Gateway to always block this keyword. Choices are

• No = the Gateway does not always block this keyword. Use the Set Block Time and Set

Blocked Days to instruct the Gateway when to block this Keyword.

• Yes = the Gateway always blocks this keyword until you remove the block. (default)

Set Block Time

Start from If you selected No for Always Block?, select the time when the Gateway is to start blocking

this keyword.

End on If you selected No for Always Block?, select the time when the Gateway is to stop blocking

this keyword.

Set Blocked Days

Select All Click this link to select all seven days. This link is not available if you selected Yes for Always

Block?

Select None Click this link to deselect all seven days. This link is not available if you selected Yes for

Always Block?

Monday – Sunday Check the check boxes that correspond to the days when you want the Gateway to block this

keyword. These checkboxes are not available if you selected Yes for Always Block?

SAVE button Click this button to save your settings.

CANCEL button Click this button to discard your settings on the Add Blocked Keyword menu.

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Blocking Services

Using the Managed Services menu, you can block access to certain services from local
computers. This feature can be used to protect children from accessing inappropriate
services.

To display the Managed Services menu, click Parental Control in the menu bar, and then
click the Managed Services submenu. Figure 41 shows an example of the menu.

Figure 41. Example of Managed Services Menu

To block services:

27. If the Managed Services menu is not displayed, click Parental Control in the menu bar,
and then click the Managed Services submenu.

28. Next to Enabled Managed Services, click Enabled.

29. Under Blocked Services, click ADD. The Add Blocked Service menu appears (see Figure

42).

30. Complete the fields in the Add Blocked Service menu (see Table 17).

31. Click SAVE (or click CANCEL to discard your settings). If you clicked SAVE, the blocked
service appears below Blocked Services on the Managed Services menu.

32. To block additional services, repeat steps 3 through 5.

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33. To edit a blocked service, click the EDIT button next to the blocked service you want to
modify, edit the settings on the Add Blocked Service menu (see Table 17), and click SAVE.

34. To delete a blocked service, click the X next to the service. When the Delete Service Block
Rule message appears, click OK to delete the blocked URL or CANCEL to retain it. If you
clicked OK, the service is removed from the Blocked Services area on the Managed

Services menu.

Figure 42. Add Blocked Service Menu

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Table 17. Add Blocked Service Menu

Option Description

User Defined Service Enter the service you want blocked.

Protocol The type of protocol associated with the service to be blocked. Choices are:

• TCP (default)

• UDP

• TCP/UDP

Start Port Starting port number on which the block will be applied. If necessary, contact the application

vendor for this information.

End Port Ending port number on which the block will be applied. If necessary, contact the application

vendor for this information.

Always Block? Select whether you want the Gateway to always block this service. Choices are

• No = the Gateway does not always block this service. Use the Set Block Time and Set

Blocked Days to instruct the Gateway when to block this service.

• Yes = the Gateway always blocks this service until you remove the block. (default)

Set Block Time

Start from If you selected No for Always Block?, select the time when the Gateway is to start blocking

this service.

End on If you selected No for Always Block?, select the time when the Gateway is to stop blocking

this service.

Set Blocked Days

Select All Click this link to select all seven days. This link is not available if you selected Yes for Always

Block?

Select None Click this link to deselect all seven days. This link is not available if you selected Yes for

Always Block?

Monday – Sunday Check the check boxes that correspond to the days when you want the Gateway to block this

service. These checkboxes are not available if you selected Yes for Always Block?

SAVE button Click this button to save your settings.

CANCEL button Click this button to discard your settings on the Add Blocked Domain menu.

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Managing Devices and Access Types

Using the Managed Devices menu, you can enable or disable managed devices and allow
or block all access types. You can also add devices you want to block.

To display the Managed Devices menu, click Parental Control in the menu bar, and then
click the Managed Devices submenu. Figure 43 shows an example of the menu.

Figure 43. Example of Managed Devices Menu

Enabling or Disabling Managed Devices

By default, all managed devices are disabled. To enable them, click Enabled next to Enable
Managed Devices.

Enabling or Disabling Access Types

By default, all access types are blocked. To unblock them, click Allow All next to Access
Type.

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Adding Blocked Devices

To add devices you want to block:

35. If the Managed Devices menu is not displayed, click Parental Control in the menu bar,
and then click the Managed Devices submenu.

36. Next to Blocked Devices, click ADD BLOCKED DEVICE. The Add Blocked Device menu

appears (see Figure 44).

37. Completed the fields in the Add Block Device menu (see Table 18).

38. Click SAVE (or click CANCEL to discard your settings). If you clicked SAVE, the blocked
device appears below Blocked Devices on the Managed Devices menu.

39. To block additional devices, repeat steps 3 through 5.

40. To edit a blocked device, click the EDIT button next to the blocked device you want to
modify, edit the settings on the Add Blocked Device menu (see Table 18), and click SAVE.

41. To delete a blocked device, click the X next to the service. When the Delete Blocked MAC
Rule message appears, click OK to delete the blocked device or CANCEL to retain it. If
you clicked OK, the device is removed from the Blocked Devices area on the Managed

Devices menu.

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Figure 44. Add Blocked Device Menu

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Table 18. Add Blocked Device Menu

Option Description

Auto-Learned Devices To select a device that the Gateway automatically learned, select the device under Auto-

Learned Devices.

Custom Device To select a custom device, enter the name and MAC address of the device in the Computer

Name and MAC Address fields below Custom Device.

Always Block? Select whether you want the Gateway to always block this device. Choices are

• No = the Gateway does not always block this device. Use the Set Block Time and Set

Blocked Days to instruct the Gateway when to block this device.

• Yes = the Gateway always blocks this device until you remove the block. (default)

Set Block Time

Start from If you selected No for Always Block?, select the time when the Gateway is to start blocking

this device.

End on If you selected No for Always Block?, select the time when the Gateway is to stop blocking

this device.

Set Blocked Days

Select All Click this link to select all seven days. This link is not available if you selected Yes for Always

Block?

Select None Click this link to deselect all seven days. This link is not available if you selected Yes for

Always Block?

Monday – Sunday Check the check boxes that correspond to the days when you want the Gateway to block this

device. These checkboxes are not available if you selected Yes for Always Block?

SAVE button Click this button to save your settings.

CANCEL button Click this button to discard your settings on the Add Blocked Device menu.

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Generating Reports

The Gateway provides a reporting feature for generating reports containing selected log
messages. Using the Reports menu, you can define filters for reports and print or download
reports.

To display the Reports menu, click Parental Control in the menu bar, and then click the

Reports submenu. Figure 45 shows an example of the menu.

Note: You can use the Logs menu to apply log filters to reports. For more information. See

page 94.

Figure 45. Example of Reports Menu

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Defining Report Filters

The Report Filters area on the Reports menu lets you select the type of Reports you want

to generate and the timeframe that the report is to cover.

To define a report filter:

1. If the Reports menu is not displayed, click Parental Control in the menu bar, and then
click the Reports submenu.

2. Perform the following steps under Report Filters:

a. Using the Report Type drop-down list, select the report to which you want to apply a

filter, Choices are:

 All

 Managed Sites

 Managed Services

 Managed Devices

b. By default, the report is generated for today. To change this timeframe, select a

different timeframe from the Time Frame drop-down list.

c. Click GENERATE REPORT to apply the filter.

Printing or Downloading the Report

After defining a report filter, use the following steps under All Reports to print or download

the report:

3. To print the report with the filter applied, click PRINT.

4. To download the report with the filter applied, click DOWNLOAD.

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Using Advanced Features

Using the Advanced Features menu, you can:

 Enable or disable port forwarding. See page 84.

 Enable or disable port triggering. See page 87.

 Enable or disable port blocking. See page 91.

 Use the Gateway’s UPnP feature to auto-discover devices. See page 92.

Enabling or Disabling Port Forwarding

Using the Firewall menu (described on page 53), you can configure the Gateway to create a
firewall between your internal network and the Internet. A firewall keeps unwanted traffic
from the Internet away from your networked computers. There may be times, however, when
you want a “tunnel” to be created through your firewall, so computers on the Internet can
communicate to one of the computers on your LAN using a single port. This is handy for
running Web servers, game servers, FTP servers, or even video conferencing.

Port forwarding allows outside users access to the computers on your LAN using a given
port or range of ports. Using port forwarding, for example, one of your computers could run a
Web server (port 80) while another computer could run an FTP server (port 23) - both using
the same IP address.

You configure the Gateway’s port forwarding feature using the Port Forwarding menu. To

display this menu, click Advanced in the menu bar, and then click the Port Forwarding

submenu in the menu bar. Figure 46 shows an example of the menu.

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Figure 46. Example of Port Forwarding Menu

Adding a Port Forwarding Rule

To add a port forwarding rule:

1. If the Port Forwarding menu is not displayed, click Advanced in the menu bar, and then
click the Port Forwarding submenu.

2. Confirm that Enabled is selected (green) next to Enable Port Forwarding. If it isn’t click
Enabled.

3. Click the ADD PORT FORWARD button. The Add Service menu appears (see Figure 47).

4. Complete the fields in the Add Service menu (see Table 19).

5. Click SAVE to save your settings (or click CANCEL to discard them). If you click SAVE,
the port forwarding rule appears below Port Forwarding on the Port Forwarding menu.

6. To add more port forwarding rules, repeat steps 3 through 5.

7. To edit a port forwarding rule, click the EDIT button next to the rule you want to modify, edit
the settings on the Add Service menu (see Table 18), and click SAVE.

8. To delete a port forwarding rule, click the X next to the rule. When the Delete Port
Forwarding Rule message appears, click OK to delete the port forwarding rule or CANCEL
to retain it. If you clicked OK, the rule is removed from the Port Forwarding area on the

Port Forwarding menu.

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Figure 47. Add Service Menu

Table 19. Add Service Menu

Option Description

Service Name Name for identifying the service. The name is for reference purposes only.

Service Type The protocol you want to use with the service. Choices are:

• TCP

• UDP

• TCP/UDP (default)

Service IP Address IP address of the LAN computer or server that is running the service.

Start Public Port Starting number of the port on which the service is provided.

End Public Port Ending number of the port on which the service is provided. This field is unavailable if the

Private Port(s) Numbers of the ports whose traffic the Gateway forwards to the LAN. If there is a range of

Enable Port Range Check this box to enable the private port range specified in Private Port(s).

Gateway is configured for a single public IP port.

ports, enter the starting private port here and check Enable Port Range. The Gateway

automatically calculates the end private port. The LAN computer server listens for traffic/data
on this port (or these ports).

SAVE button Click this button to save your settings.

CANCEL button Click this button to discard your settings on the Add Blocked Device menu.

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Disabling Port Forwarding

To disable port forwarding:

1. If the Port Forwarding menu is not displayed, click Advanced in the menu bar, and then
click the Port Forwarding submenu.

2. Next to Enable Port Forwarding, click Disabled. The ADD PORT FORWARD button

becomes unavailable and all port forwarding rules that have been defined turn gray to
show they are disabled.

Enabling Port Forwarding

To enable port forwarding:

1. If the Port Forwarding menu is not displayed, click Advanced in the menu bar, and then
click the Port Forwarding submenu.

2. Next to Enable Port Forwarding, click Enabled. The ADD PORT FORWARD button turns

green, and all port forwarding rules that have been defined become available, along with

the EDIT and delete buttons.

Enabling or Disabling Port Triggering

Using the Port Triggering menu, you can configure the Gateway to detect port triggers for
detect multiple-session applications and allow them to pass the firewall. For special
applications, besides the initial communication session, there are multiple related sessions
created during the protocol communications. Normally, a normal treats the triggered
sessions as independent sessions and blocks them. However, the Gateway can co-relate
the triggered sessions with the initial session and group them together in the NAT session
table. As a result, you need only specify which protocol type and port number you want to
track, as well as some other related parameters. In this way, the Gateway can pass the
special applications according to the supplied information.

Assume, for example, that to use H.323 in a Net Meeting application, a local client starts a
session A to a remote host. The remote host uses session A to communicate with the local
host, but it also could initiate another session B back to the local host. Since there is only
session A recorded in the NAT session table when the local host starts the communication,
session B is treated as an illegal access from the outside and is blocked. Using the Special
Application menu, you can configure the Gateway to co-relate sessions A and B and
automatically open the port for the incoming session B.

To display the Port Triggering menu, click Advanced in the menu bar, and then click the
Port Triggering submenu in the menu bar. Figure 48 shows an example of the menu.

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Figure 48. Example of Port Triggering Menu

Adding a Port Triggering Rule

To add a port triggering rule:

1. If the Port Triggering menu is not displayed, click Advanced in the menu bar, and then
click the Port Triggering submenu.

2. Next to Enable Port Triggering, click Enabled.

3. Click the ADD PORT FORWARD button. The Port Triggering Add menu appears (see

Figure 49).

4. Complete the fields in the Port Triggering Add menu (see Table 20).

5. Click SAVE to save your settings (or click CANCEL to discard them). If you click SAVE,
the port triggering rule appears below Port Triggering on the Port Triggering menu.

6. To add more port triggering rules, repeat steps 3 through 5.

7. To edit a port triggering rule, click the EDIT button next to the rule you want to modify, edit
the settings on the Port Triggering Add menu (see Table 20), and click SAVE.

8. To delete a port triggering rule, click the X next to the rule. When the Delete Port Triggering
Rule message appears, click OK to delete the port triggering rule or CANCEL to retain it. If
you clicked OK, the rule is removed from the Port Triggering area on the Port Triggering

menu.

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Figure 49. Port Triggering Add Menu

Table 20. Port Triggering Add Menu

Option Description

Service Name Name for identifying the trigger. The name is for reference purposes only.

Service Type The type of protocol you want to use with the trigger. Choices are:

• TCP

• UDP

• TCP/UDP (default)

For example, to track the H.323 protocol, the protocol type should be TCP.

Trigger Port From From port ranges of the special application. For example, to track H.323 protocol, the From

port should be 1720.

Trigger Port To To port ranges of the special application. For example, to track H.323 protocol, the To port

should be 1720.

Target Port From Starting port range for the target port listening for the special application.

Target Port To Ending port range for the target port listening for the special application.

Interval Specify the interval between 50 and 30000 between two continuous sessions. If the interval

exceeds this time interval setting, the sessions are considered to be unrelated.

SAVE button Click this button to save your settings.

CANCEL button Click this button to discard your settings on the Add Blocked Device menu.

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Disabling Port Triggering

To disable port triggering:

1. If the Port Triggering menu is not displayed, click Advanced in the menu bar, and then
click the Port Triggering submenu.

2. Next to Enable Port Triggering, click Disabled. The ADD PORT TRIGGER button

becomes unavailable and all port triggering rules that have been defined turn gray to show
they are disabled.

Enabling Port Triggering

To enable port triggering:

1. If the Port Triggering menu is not displayed, click Advanced in the menu bar, and then
click the Port Triggering submenu.

2. Next to Enable Port Triggering, click Enabled. The ADD PORT TRIGGER button turns

green, and all port triggering rules that have been defined become available, along with the

EDIT and delete buttons.

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Enabling or Disabling Port Blocking

By default, all four Ethernet ports on the Gateway are enabled and configured to auto­negotiate the highest speed and duplex settings. If these settings prevent the Gateway from
connecting with other devices, you can use the Port Blocking menu to configure the
Gateway’s Ethernet ports to use specific speed and duplex settings. The Port Blocking menu
also let you disable the Ethernet ports. Each port can be configured or disabled
independently of the other Ethernet ports on the Gateway.

To display the Port Blocking menu, click Advanced in the menu bar, and then click the Port

Blocking submenu in the menu bar. Figure 50 shows an example of the menu.

Figure 50. Example of Port Blocking Menu

To change a port from its default settings, perform the following procedure on the row that
corresponds to the Ethernet port you want to configure.

1. Under the Auto Negotiate column, select No.

2. Under the Mode column, select Full for full-duplex or Half for half-duplex to force the

selected port to use the duplex setting you select.

3. Under Speed, select the fixed speed that the port will use.

4. To disable the port, check the checkbox in the Disable Port column.

5. Click the SAVE button.

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Note: If you disable the port through which you are accessing the Gateway’s Web interface,

you are disconnected and your session ends. You can reconnect to the Gateway using one of
the other enabled LAN ports.

Discovering Devices

Using the Device Discovery menu, the Gateway can obtain protocol addresses of
neighboring devices and discover the platform of those devices.

To display the Device Discovery menu, click Advanced in the menu bar, and then click the
Device Discovery submenu in the menu bar. Figure 51 shows an example of the menu and

Table 21 describes it.

Figure 51. Example of Device Discovery Menu

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Table 21. Device Discovery Menu

Option Description

Enable UPnP Determines whether the Gateway uses its UPnP feature to communicate with other devices or

Advertisement Period How often the Gateway broadcasts its UPnP information (if UPnP is enabled). This value can

Time To Live A counting mechanism to determine how long a packet is valid before it reaches its

Enable Zero Config Determines whether zero configuration is enabled or disabled. Zero configuration networking

your operating system.

• Enabled = allows the Gateway to use its UPnP feature to communicate with other devices

or your operating system. (default)

• Disabled = prevents the Gateway from using its UPnP feature to communicate with other

devices or your operating system. Also, may be disabled if your operating system does not
support UPnP.

range from 1 to 1440 minutes. The default period is 30 minutes. Shorter durations ensure that
control points have current device status at the expense of additional network traffic. Longer
durations can compromise the freshness of the device status, but can significantly reduce
network traffic.

destination. Each time a TCP/IP packet passes through a router, it decrements its Time To
Live count. When the count reaches zero, the packet is dropped by the router. This ensures
that errant routing and looping aimless packets will not flood the network. The number of hops
can range from 1 to 255. The default value is 5 hops, which should be fine for most networks.
If you notice that some devices are not being updated or reached correctly, you might want to
increase this value slightly.

automatically creates a usable IP network, without manual operator intervention or special
configuration servers. It allows nonexpert users to connect computers, networked printers,
and other network devices and expect a functioning network to be established automatically.

• Enabled = enables support for zero configuration.

• Disabled = disables support for zero-configuration (default)

SAVE button Click this button to save your settings.

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Troubleshooting the Gateway

Using the Troubleshooting menu, you can:

 Define log filters. See page 94.

 Test connectivity to a destination or IP address. See page 96.

 Reset the Gateway, reset your Wi-Fi router, or restore the Gateway to its factory default

settings. See page 98.

 Change the password used to log in to the Gateway’s Web interface. See page 99.

Note: For additional troubleshooting procedures, see Chapter 6.

Defining Log Filters

Using the Logs menu, you can define the filters applied to the Gateway’s system, event, and
firewall logs. You can also specify the timeframe to be covered by the logs, as well as
download and print the logs.

To display the Logs menu, click Troubleshooting in the menu bar, and then click the Logs

submenu in the menu bar. Figure 52 shows an example of the menu.

Figure 52. Example of the Logs Menu

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Defining Log Filters

The Log Filters area on the Logs menu lets you select the type of logs you want to generate

and the timeframe that the log is to cover.

To define a log filter:

1. If the Logs menu is not displayed, click Troubleshooting in the menu bar, and then click
the Logs submenu.

2. Perform the following steps under Log Filters:

a. Using the Log Type drop-down list, select the log to which you want to apply a filter,

Choices are:

 System Logs

 Event Logs

 Firewall Logs

b. By default, the log is generated for today. To change this timeframe, select a different

timeframe from the Time Frame drop-down list.

c. Click SHOW LOGS to apply the filter.

Printing or Downloading Log

After defining a log filter, use the following steps under System Logs to print or download

the log:

1. To print the log with the filter applied, click PRINT.

2. To download the log with the filter applied, click DOWNLOAD.

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Testing Connectivity to Destination and IP Addresses

There may be times when you encounter a problem trying to reach a certain destination. If
you examine the Gateway’s configuration and operation and everything looks fine, the
problem might be with a router up the line from the Gateway or with the line itself.

To help you identify such issues, the Network Diagnostic Tools menu lets you test
connectivity to a destination or IP address. To display the Network Diagnostic Tools menu,

click Troubleshooting in the menu bar, and then click the Diagnostic Tools submenu in

the menu bar. Figure 53 shows an example of the menu.

Figure 53. Example of the Network Diagnostic Tools Menu

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Testing Connectivity to a Destination Address

To test the Gateway’s connectivity to a destination address:

1. If the Network Diagnostic Tools menu is not displayed, click Troubleshooting in the menu
bar, and then click the Diagnostic Tools submenu.

2. Under Test Connectivity Results, enter a destination address in the Destination

Address field.

Note: This procedure assumes that the destination address you enter is valid and

operational.

3. Click the TEST CONNECTIVITY button. The Packets Sent and Packets Received

counters show whether packets the number of packets sent and received during the test.

4. To stop the test, click the STOP button.

If the test is successful, you know that the destination you are having difficulty reaching is
alive and physically reachable. If there are routers between the Gateway and the destination
you are having difficulty reaching, the problem might be at one of the routers.

Testing Connectivity to an IP Address

To test the Gateway’s connectivity to an IP address:

5. If the Network Diagnostic Tools menu is not displayed, click Troubleshooting in the menu
bar, and then click the Diagnostic Tools submenu.

6. Under Check for IP Address Results, enter an IP address in the IP Address field.

Note: This procedure assumes that the IP address you enter is valid and operational.

7. Click the CHECK FOR IP ADDRESSES button. The Connectivity indicator shows the

results of the test.

8. To stop the test, click the STOP button.

If the test is successful, you know that the IP address you are having difficulty reaching is
alive and physically reachable. If there are routers between the Gateway and the IP address
you are having difficulty reaching, the problem might be at one of the routers.

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Restoring or Rebooting the Gateway

The Restore / Reboot Gateway menu provides buttons for performing the following activities:

 RESET - restarts the Gateway while keeping any overrides you made to the Gateway’s

factory default settings.

 RESET WI-FI Router - resets the Wi-Fi router without affecting the Gateway.
 RESTORE FACTORY SETTINGS - returns the Gateway to its factory default settings.

Any overrides you made to the default settings will be removed. This button in
functionally equivalent to using the reset button to reset the Gateway (see “Using the
Reset Button” on page 17).

To display the Network Diagnostic Tools menu, click Troubleshooting in the menu bar, and
then click the Restore Reboot Gateway submenu in the menu bar. Figure 54 shows an

example of the menu.

Figure 54. Example of the Restore / Reboot Gateway Menu

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Changing the Login Password

The Change Password menu lets you change the password used to log in to the Gateway’s
Web interface. For security, we recommend you change the default log in password the first
time you log in to the Web management interface to protect the Gateway from being
tampered with.

To display the Change Password, click Troubleshooting in the menu bar, and then click the
Change Password submenu in the menu bar. Figure 55 shows an example of the menu

and Table 22 describes the menu.

Figure 55. Example of the Change Password Menu

Table 22. Change Password Menu

Option Description

Current Password Enter the current case-sensitive administrator password. For security purposes, every typed

character appears as a dot (). The default password is not shown for security purposes.

New Password Enter the new case-sensitive administrator password you want to use. A password can

contain alphanumeric characters and spaces. For security purposes, every typed character
appears as a dot ().

Re-enter New Password Enter the same case-sensitive administrator password you typed in the New Password field.

For security purposes, every typed character appears as a dot ().

SAVE button Click this button to save your settings.

CANCEL button Click this button to discard your settings on the Change Password menu.

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5 Configuring the Gateway’s mso Interface

After configuring your computer for TCP/IP and following the preconfiguration guidelines in
Chapter
the Gateway’s mso interface. This chapter describes how to use your computer’s Web
browser to configure the Gateway.

The topics covered in this chapter are:

 Accessing the Gateway’s Web Management (page 37)

3, use that computer’s Web browser to configure your SMCD3GNV Gateway using

 Understanding the Web Management Interface Menus (page 38)

 Web Management Interface Menus (page 40)

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