SMC Networks DORY3A Cable Gateway User Manual SMCD3GNV Wireless Cable Modem Gateway

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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

iii SMCD3GNV Wireless Cable Modem Gateway User Manual 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® Macintosh® Computer ..................................................... 33 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

Contents iv SMCD3GNV Wireless Cable Modem Gateway User Manual 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 .............................................................. 91 Discovering Devices ...................................................................................... 92 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 5 Configuring the Gateway’s mso Interface ...................................................... 100 Accessing the Gateway’s Web Management .......................................................... 101 Understanding the Web Management Interface Menus .......................................... 102

Contents v SMCD3GNV Wireless Cable Modem Gateway User Manual 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 ........................................................................... 165 Configuring Routing Settings ....................................................................... 167 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

Contents vi SMCD3GNV Wireless Cable Modem Gateway User Manual 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 ................................. 204 Connecting to America Online Behind the Gateway ......................................... 204 Connecting to XBox Live, PSP, and Nintendo WFC ......................................... 204 Appendix A - Specifications ............................................................................... 205 Appendix B - Compliances ................................................................................. 209 Index ..................................................................................................................... 211

vii 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.

Preface viii SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Preface ix SMCD3GNV Wireless Cable Modem Gateway User Manual 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 effectively. Warning Warnings indicate that failure to take a specified action could result in damage to the device. Electric Shock Hazard This symbol warns users of electric shock hazard. Failure to take appropriate precautions such as not opening or touching hazardous areas of the equipment could result in injury or death.

Preface x SMCD3GNV Wireless Cable Modem Gateway User Manual 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 Indicates a variable, which is a placeholder for actual text provided by the user or system. Italic font is also used to indicate variables. [ ] square brackets Indicates optional values. { } braces Indicates required or expected values. | vertical bar Indicates that you have a choice between two or more options or arguments.

11 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)

Getting to Know the Gateway 12 SMCD3GNV Wireless Cable Modem Gateway User Manual 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® Windows® 2000 or higher for USB driver support.  An analog telephone and two RJ-11 cables if you want to connect the Gateway to an analog telephone and PSTN telephone line.

Getting to Know the Gateway 13 SMCD3GNV Wireless Cable Modem Gateway User Manual Front Panel The front panel of your SMCD3GNV Wireless Cable Modem Gateway contains a set of light-emitting 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

Getting to Know the Gateway 14 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Getting to Know the Gateway 15 SMCD3GNV Wireless Cable Modem Gateway User Manual      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. 

Getting to Know the Gateway 16 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Getting to Know the Gateway 17 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

18 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)

Installing the Gateway 19 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Installing the Gateway 20 SMCD3GNV Wireless Cable Modem Gateway User Manual 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).

Installing the Gateway 21 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Installing the Gateway 22 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Installing the Gateway 23 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

24 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)

Preconfiguration Guidelines 25 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Preconfiguration Guidelines 26 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Preconfiguration Guidelines 27 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Preconfiguration Guidelines 28 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Preconfiguration Guidelines 29 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Preconfiguration Guidelines 30 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Preconfiguration Guidelines 31 SMCD3GNV Wireless Cable Modem Gateway User Manual 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).

Preconfiguration Guidelines 32 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Preconfiguration Guidelines 33 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Preconfiguration Guidelines 34 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Preconfiguration Guidelines 35 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

36 SMCD3GNV Wireless Cable Modem Gateway User Manual 4 Configuring the Gateway After configuring your computer for TCP/IP and following the preconfiguration guidelines in Chapter 3, use that computer’s Web browser to configure your SMCD3GNV Gateway. 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)  Understanding the Web Management Interface Menus (page 38)  Web Management Interface Menus (page 40)

37 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 http://10.0.0.1 and press the Enter key. The Login screen appears (see Figure 18). 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).

Configuring the Gateway 38 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 39 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 Main area Status icons Logout and Change Password Buttons Menu bar Control Panel

Configuring the Gateway 40 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 devices, and recent network updates. 42 Connection Displays submenus that let you: Connection > Status • View and edit settings for the local IP network, and view the settings of the Wi-Fi network and Comcast network. 44 Connection > Comcast Network • View Comcast network settings and initialization procedures, including cable modem, downstream, and upstream information. 46 Connection > Local IP Network • View and reset your local IPv4 and IPv6 settings. 47 Connection > WiFi • View and edit the Gateway’s basic and advanced wireless settings. 49 Firewall • Configure the security level of the Gateway’s internal firewall. 53 Ssoftware • View system software information. 55 Hardware > System Hardware • View information about the Gateway system hardware. 56 Hardware > Battery • View information about the Gateway’s internal battery. 57 Hardware > LAN • View the link status and Media Access Control (MAC) address for each of the four Gateway Ethernet ports. 58 Hardware > WiFi • View the status and MAC address of the Gateway’s Wi-Fi port. 59 Wizard • Use a wizard to set up your home network. 60 Connected Devices Displays the Computer submenu for adding online computers and viewing computers that are offline.

Configuring the Gateway 41 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 • Blocked sites, blocked keywords, and trusted computers. 68 Parental Control > Managed Services • Blocked services and trusted computers. 75 Parental Control > Managed Devices • Managed and blocked devices. 78 Parental Control > Reports • Generating reports containing selected Log Messages generated during the user-defined timeframe. 82 Advanced Displays submenus that let you: Advanced > Port Forwarding • Enable or disable the Gateway’s port forwarding feature. 84 Advanced > Port Triggering • Enable or disable the Gateway’s port triggering feature. 87 Advanced > Port Blocking • Enable or disable the Gateway’s port blocking feature. 91 Advanced > Device Discovery • Enable or disable the Gateway’s Universal Plug and Play (UPnP) feature for dynamic connectivity to devices on the network. 92 Troubleshooting Displays submenus that let you: Troubleshooting > Logs Configure log filters, and download and print system logs. 94 Troubleshooting > Disanostic Tools Tests connectivity to a destination or IP address. 96 Troubleshooting > Restore/Reboot Gateway Reset the Gateway, reset the Wi-Fi router only, or restore factory settings. 98 Troubleshooting > Change Password Change the password used to log in to the Gateway’s Web interface. 99

Configuring the Gateway 42 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 operation. This area also shows the Gateway’s firewall security level. To change this level, see “Configuring Firewall Settings” on page 53. Connected Devices Shows the names of the devices connected to the Gateway. A Connected Devices button opens the Computers menu for viewing devices that the Gateway automatically detects using DHCP (see page 64). Recent Network Updates Displays alert and warning information. A drop-down list lets you view this information for today, yesterday, this week, or this month.

Configuring the Gateway 43 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 44 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 45 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 6. Status Menu Option Description Local IP Network Displays information about the local network. The EDIT button opens the Local IP Configuration menu for viewing and changing IPv4 or IPv6 settings (see “Viewing and Editing Your Local IP Configuration” on page 47). WiFi Network Lets you view information about your Wi-Fi network. A VIEW button opens the WiFi menu for viewing the link status and MAC address of the Gateway’s WiFi LAN port (see “Viewing Wi-Fi Settings” on page 59). Comcast Network Lets you view information about the Comcast network. A VIEW button opens the Comcast Network menu for viewing the initialization procedures, including cable modem, downstream, and upstream information (see “Viewing Comcast Network Information” on page 46).

Configuring the Gateway 46 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 47 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 48 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 FOR IPV4 button Resets the Gateway to the factory default IPv4 settings. 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 Resets the Gateway to the factory default IPv6 settings.

Configuring the Gateway 49 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 50 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 8. Wireless Menu Option Description Private Wireless Network Name MAC Address Security Mode 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. 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.

Configuring the Gateway 51 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 52 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 (see Figure 3). 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.

Configuring the Gateway 53 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 where security is critical. Typical Security (Medium) Configures the Gateway’s firewall for typical (medium) security. Select this setting for environments where security is important. Minimum Security (Low) Configures the Gateway’s firewall for minimum (low) security. Select this setting for environments where security is not important. Custom Security Clicking this option displays the custom security settings in Figure 27. For more information, see Table 10. SAVE SETTINGS button After configuring your firewall settings, click this button to save them. RESTORE DEFAULT SETTINGS button Resets the Gateway to the factory default firewall settings.

Configuring the Gateway 54 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 to protect against attacks such as cascading ping floods. 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. 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. Disable entire firewall Disables all of the Gateway’s firewall settings.

Configuring the Gateway 55 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 56 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 57 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 58 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 59 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 60 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 61 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 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. Current Password Enter the current case-sensitive password. For security purposes, every typed character 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. New Password Enter the new password you want to use. The password is case sensitive and can contain from 8 to 20 alphanumeric characters, but no spaces. Spaces count as password characters. 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 (). NEXT PAGE button Click this button to display the second page of the Home Network Wizard (see Figure 34 and Table 12).

Configuring the Gateway 62 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 34. Example of the Second Page of the Home Network Wizard

Configuring the Gateway 63 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 more obvious for others to know which network they are connecting to. Encryption Method The default selection of OPEN means your wireless transmissions are not protected. 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. Enter Network Password If you select one of the WEP or WPA encryption settings, enter the password used for encryption and decryption. 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.

Configuring the Gateway 64 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 65 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 66 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 the MAC address. For information about obtaining the MAC address of a computer, see “Determining a Computer’s MAC Address” on page 196. Static IP Address Static IP address of the computer you want to add. Add a period between each octet in the IP address. 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. Figure 37. Example of the Edit Computer Menu

Configuring the Gateway 67 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 static IP address. If you select Static IP, enter the static IP address in the Static IP Address field. MAC Address Edit the MAC address of the selected computer. Add a colon between each 2-character ID in the MAC address. Static IP Address If you selected Static IP for Configuration, enter the computer’s static IP address. Add a period between each octet in the IP address. 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.

Configuring the Gateway 68 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 chat-rooms. 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.

Configuring the Gateway 69 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 70 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 39. Add Blocked Domain Menu

Configuring the Gateway 71 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 72 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 73 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 40. Add Blocked Keyword Menu

Configuring the Gateway 74 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 75 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 76 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 77 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 78 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 79 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 80 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 44. Add Blocked Device Menu

Configuring the Gateway 81 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 82 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 83 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 84 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 85 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 86 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 Gateway is configured for a single public IP port. Private Port(s) Numbers of the ports whose traffic the Gateway forwards to the LAN. If there is a range of 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). Enable Port Range Check this box to enable the private port range specified in Private Port(s). SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Device menu.

Configuring the Gateway 87 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 88 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 89 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 90 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 91 SMCD3GNV Wireless Cable Modem Gateway User Manual Enabling or Disabling Port Blocking By default, all four Ethernet ports on the Gateway are enabled and configured to auto-negotiate 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.

Configuring the Gateway 92 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 93 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 21. Device Discovery Menu Option Description Enable UPnP Determines whether the Gateway uses its UPnP feature to communicate with other devices or 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. Advertisement Period How often the Gateway broadcasts its UPnP information (if UPnP is enabled). This value can 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. Time To Live A counting mechanism to determine how long a packet is valid before it reaches its 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. Enable Zero Config Determines whether zero configuration is enabled or disabled. Zero configuration networking 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.

Configuring the Gateway 94 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 95 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 96 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 97 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway 98 SMCD3GNV Wireless Cable Modem Gateway User Manual 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

Configuring the Gateway 99 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

100 SMCD3GNV Wireless Cable Modem Gateway User Manual 5 Configuring the Gateway’s mso Interface After configuring your computer for TCP/IP and following the preconfiguration guidelines in Chapter 3, use that computer’s Web browser to configure your SMCD3GNV Gateway using 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)  Understanding the Web Management Interface Menus (page 38)  Web Management Interface Menus (page 40)

101 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 http://10.0.0.1 and press the Enter key. The Login screen appears (see Figure 18). Figure 56. Login Screen 3. In the Login User Password screen, enter the default username and x default password furnished by SMC Networks. 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).

Configuring the Gateway’s mso Interface 102 SMCD3GNV Wireless Cable Modem Gateway User Manual 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.

Configuring the Gateway’s mso Interface 103 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 57. 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 58 appear. Figure 58. Example of Connection Submenus Menu bar Control Panel Main area Status icons Username Logout and Change Password Buttons

Configuring the Gateway’s mso Interface 104 SMCD3GNV Wireless Cable Modem Gateway User Manual Web Management Interface Menus Table 4 describes the menus in the Web management interface. In Table 4 and the sections in this chapter, angle brackets show the path of menus and submenus. For example, Gateway > Connection > XFINITY Network means you click the Gateway menu in the menu bar, and then click the Connection and XFINITY Network submenus below Gateway. The same convention is used in the breadcrumbs displayed in the Gateway configuration menus, so you can keep track of your location within the Gateway’s Web management interface. Table 23. Web Management Interface Menus and Submenus Menus and Submenus Description See Page Gateway > At a Glance View information about your home network and connected devices. 107 Gateway > Email Notification Configure the Gateway to send email notifications when there is a firewall and/or parental control breach. 108 Gateway > Connection > Status View and edit the settings for your local IP network, and view the status of the Wi-Fi network and XFINITY network. 111 Gateway > Connection > Local IP Network View and change the Gateway’s IPv4 and IPv6 settings. 112 Gateway > Connection > WiFi View and edit the Gateway’s basic and advanced wireless settings. 114 Gateway > Connection > XFINITY Network View XFINITY network settings and initialization procedure information, including cable modem and downstream channel bonding values. 121 Gateway > Firewall View and edit the security level of the Gateway’s internal firewall. 123 Gateway > Software View the software version and packet cable version for the Gateway. 125 Gateway > Hardware > System Hardware View information about the Gateway system hardware. 127 Gateway > Hardware > Battery View information about the Gateway’s internal battery. 128 Gateway > Hardware > LAN View the link status and Media Access Control (MAC) address for the Gateway’s four Ethernet ports. 129 Gateway > Hardware > WiFi View the status and MAC address of the Gateway’s Wi-Fi port. 130 Gateway > Wizard Use a wizard to set up your home network. 131 Connected Devices > Computers View computers connected to the Gateway’s LAN, add computer’s with static IP addresses to the Gateway’s LAN, and add WiFi-protected clients to the Gateway’s LAN. 135

Configuring the Gateway’s mso Interface 105 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 23. Web Management Interface Menus and Submenus Menus and Submenus Description See Page Parental Control > Managed Sites Restrict access to Web sites for non-trusted computers on the network. 142 Parental Control > Managed Services Restrict access to certain services and applications for non-trusted computers on the network 148 Parental Control > Managed Devices Enable or disable managed devices, allow or block all access types, and add devices you want to block. 152 Parental Control > Reports Define a default report filter and generate reports. 156 Advanced > Port Forwarding Enable the Gateway’s port forwarding feature to create a “tunnel” through the Gateway firewall. 157 Advanced > Port Triggering Configure the Gateway to detect port triggers for multiple-session applications and allow them to pass through the firewall. 160 Advanced > Remote Management Configure the Gateway for remote management using HTTP, Hypertext Transfer Protocol Secure (HTTPS), Telnet, Secure Shell (SSH), Simple Network Management Protocol (SNMP), and/or HNAP. 163 Advanced > DMZ Configure the Gateway to provide a local computer with unrestricted two-way Internet access by defining it as a Virtual Demilitarized Zone (DMZ) host. 165 Advanced > Routing Configure how the Gateway adjusts to physical changes in the network’s layout and exchanges routing tables with other routers. 167 Advanced > Dynamic DNS Allows the Gateway to notify a domain name server to change, in real time, the active DNS configuration of its configured hostnames, addresses, or other information stored in DNS. 169 Advanced > Device Discovery Configure the Gateway to obtain protocol addresses of neighboring devices and discover the platform of those devices. 171 Troubleshooting > Logs Define a default log filter and generate logs. 174 Troubleshooting > Disanostic Tools Test the Gateway’s connectivity to a destination or IP address. 175 Troubleshooting > Restore/Reboot Gateway Reset the Gateway, reset the Wi-Fi router only, restore the Gateway’s wireless settings only, or restore the Gateway’s factory settings. 177 Troubleshooting > Change Password Change the password used to log in to the Gateway’s Web management interface. 178

Configuring the Gateway’s mso Interface 106 SMCD3GNV Wireless Cable Modem Gateway User Manual Configuring the Gateway Settings Using the submenus below Gateway, you can:  View at-a-glance settings for your network and connected devices. See page 107.  Set up email notifications. See page 108.

Configuring the Gateway’s mso Interface 107 SMCD3GNV Wireless Cable Modem Gateway User Manual Viewing At-a-Glance Configuration Settings 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 > At a Glance in the menu bar. Figure 59 shows an example of the At a Glance menu and Table 24 describes the menu. Figure 59. Example of the At a Glance Menu<<screen missing items??>> Table 24. 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 operation. This area also shows the Gateway’s firewall security level. To change this level, see “Configuring Firewall Settings” on page 123. Connected Devices Shows the names of the devices connected to the Gateway. A View Connected Devices button opens the Computers menu for viewing devices that the Gateway automatically detects using DHCP (see page 135).

Configuring the Gateway’s mso Interface 108 SMCD3GNV Wireless Cable Modem Gateway User Manual Configuring Email Notifications Using the Email Notification menu, you can configure the Gateway to send email notifications when there is:  A firewall and/or parental control breach  An alert or warning <true??>> If desired, you can configure the Gateway to send the logs with the email. To display this menu, click Gateway > Email Notification in the menu bar. Figure 60 shows an example of the Email Notification menu and Table 25 describes the menu. Figure 60. Email Notification Menu

Configuring the Gateway’s mso Interface 109 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 25. Email Notification Menu Option Description Recipient Email Email address of the recipient who will receive email notifications.<<can you specify more than one recipient??>> Notification Types Firewall Breach Determines whether an email notification is sent when the Gateway detects a firewall breach. • Yes = Gateway sends a notification when it detects a firewall breach. • No = Gateway does not send a notification when it detects a firewall breach. (default) Parental Control Breach Determines whether an email notification is sent when the Gateway detects a parental control breach. • Yes = Gateway sends a notification when it detects a parental control breach. • No = Gateway does not send a notification when it detects a parental control breach. (default) Alerts or Warnings Determines whether an email notification is sent when a Gateway alert or warning occurs. • Yes = email notification is enabled. • No = email notification is disabled. (default) Send Logs Determines whether the Gateway sends logs with the email notification. • Yes = logs are sent with the email notification. • No = logs are not sent with the email notification. (default) Mail Server Configuration SMTP Server Address The address of the SMTP server through which the Gateway will send email notifications. For this configuration to succeed, this procedure assumes that your SMTP server is operational and configured properly. Sender’s Email Address The email address that will appear as the sender of the email notification. Sender’s Username The name that will appear as the sender of the email notification. Sender’s Password The password used by the sender to send email. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Email Notification menu.

Configuring the Gateway’s mso Interface 110 SMCD3GNV Wireless Cable Modem Gateway User Manual Configuring Connections Using the submenus below Connections, you can:  View and edit the settings for your local IP network, and view the Gateway’s Wi-Fi and XFINITY network connections. See page 111.  Configure the Gateway’s IPv4 or IPv6 settings. See page 112.  View and edit basic and advanced wireless settings. See page 114.  View XFINITY network information. See page 121.

Configuring the Gateway’s mso Interface 111 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 XFINITY network. To display the Status menu, click Gateway > Connection > Status in the menu bar. Figure 61 shows an example of the Status menu and Table 26 describes the menu. Figure 61. Example of the Status Menu

Configuring the Gateway’s mso Interface 112 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 26. Status Menu Option Description Local IP Network Displays information about the local network. The EDIT button opens the Local IP Configuration menu for viewing and changing IPv4 or IPv6 settings (see “Viewing and Editing Your Local IP Configuration” on page 112). WiFi Network Lets you view information about your Wi-Fi network. A VIEW button opens the WiFi menu for viewing the link status and MAC address of the Gateway’s WiFi LAN port (see “Viewing Wi-Fi Settings” on page 130). XFINITY Network Lets you view information about the XFINITY network. A VIEW button opens the Comcast Network menu for viewing the initialization procedures, including cable modem, downstream, and upstream information (see “Viewing XFINITY Network Information” on page 121). 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 Gateway > Connection > Local IP Network in the menu bar. Figure 62 shows an example of the Local IP Configuration menu and Table 27 describes the menu. Figure 62. Example of Local IP Configuration Menu

Configuring the Gateway’s mso Interface 113 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 27. 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 FOR IPV4 button Resets the Gateway to the factory default IPv4 settings. 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. Prefix Length A read-only value that sows the IPv6 prefix length, which is always 64. SAVE SETTINGS button After enabling or disabling IPv6, click this button to apply. RESTORE DEFAULT SETTINGS FOR IPV6 button Resets the Gateway to the factory default IPv6 settings.

Configuring the Gateway’s mso Interface 114 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Connection > WiFi in the menu bar . The Wireless menu is organized into the following areas:  Private WiFi and Public WiFi networks – see page 115  Private wireless basic settings – see page 116  Private advanced basic settings – see page 117  MAC filter settings – see page 119  WiFi client setup configuration (WPS) - see page 120  Connect to your WPS-supported device – see page 121

Configuring the Gateway’s mso Interface 115 SMCD3GNV Wireless Cable Modem Gateway User Manual Private and Public WiFI Networks Figure 63 shows the Private and Public WiFI Network areas on the WiFi menu, and Table 28 describes the fields shown. Figure 63. Wireless Menu - Private and Public WiFI Networks Areas Table 28. Wireless Menu - Private and Public WiFI Networks Areas Option Description Private WiFi Network Name MAC Address Security Mode 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. Public WiFi Network Name MAC Address Security Mode Shows the name MAC address, and security setting, if any, for each public wireless network detected. An EDIT button is provided to change these settings.

Configuring the Gateway’s mso Interface 116 SMCD3GNV Wireless Cable Modem Gateway User Manual Private Wireless Basic Settings Figure 64 shows the private wireless basic settings on the WiFi menu, and Table 29 describes the fields shown. Figure 64. Wireless Menu - Private Wireless Basic Settings Table 29. Wireless Menu - Private Wireless Basic Settings Option Description Mode If wireless operation is enabled for the Gateway, this option selects the wireless mode used by the Gateway. 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. • 802.11g/n = use this setting if you have EEE 802.11g and IEEE 802.11n devices on your network. • 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.

Configuring the Gateway’s mso Interface 117 SMCD3GNV Wireless Cable Modem Gateway User Manual Private Wireless Advanced Settings Figure 65 shows the private wireless basic settings on the WiFi menu, and Table 30 describes the fields shown. Figure 65. Wireless Menu - Private Wireless Advanced Settings Table 30. Wireless Menu - Private Wireless Advanced Settings Option Description 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)

Configuring the Gateway’s mso Interface 118 SMCD3GNV Wireless Cable Modem Gateway User Manual Option Description 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. 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) 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.

Configuring the Gateway’s mso Interface 119 SMCD3GNV Wireless Cable Modem Gateway User Manual MAC Filter Settings Figure 66 shows the MAC filter settings on the WiFi menu, and Table 31 describes the fields shown. Figure 66. Wireless Menu – MAC Filter Settings Table 31. Wireless Menu – MAC Filter Settings Option Description SSID Network name of the of the primary wireless carrier. MAC Filtering Mode Use MAC Filtering Mode to allow or deny all or certain wireless devices within the LAN from accessing the Internet. You can either manually add a MAC address or select the MAC address from the list of auto-learned wireless devices. The choices are: • Allow- All = all wireless client stations can connect to the Internet. (default) • Allow = allow only the wireless client stations in the Wireless Control List to connect to the Internet. • Deny = deny the wireless client stations in the Wireless Control List from connecting to the Internet. Wireless Control List Shows up to 16 wireless devices whose MAC addresses you have added. Auto-Learned Wireless Devices Shows the wireless devices whose presence the Gateway has automatically learned. Manually-Added Wireless Devices Enter a unique name and MAC address of the wireless devices that you want to manually add to the Wireless Control List, then click Add to add the device. SAVE FILTER SETTING button Click this button to save your changes to the MAC filter settings.

Configuring the Gateway’s mso Interface 120 SMCD3GNV Wireless Cable Modem Gateway User Manual WiFi Client Setup Configuration (WPS) Figure 67 shows the WiFI client setup configuration settings on the WiFi menu, and Table 32 describes the fields shown. Figure 67. Wireless Menu – WiFi Client Setup Configuration (WPS) Settings Table 32. Wireless Menu – WiFi Client Setup Configuration (WPS) Settings Option Description SSID Network name of the of the primary wireless carrier. MAC Filtering Mode Use MAC Filtering Mode to allow or deny all or certain wireless devices within the LAN from accessing the Internet. You can either manually add a MAC address or select the MAC address from the list of auto-learned wireless devices. The choices are: • Allow- All = all wireless client stations can connect to the Internet. (default) • Allow = allow only the wireless client stations in the Wireless Control List to connect to the Internet. • Deny = deny the wireless client stations in the Wireless Control List from connecting to the Internet. Wireless Control List Shows up to 16 wireless devices whose MAC addresses you have added. Auto-Learned Wireless Devices Shows the wireless devices whose presence the Gateway has automatically learned. Manually-Added Wireless Devices Enter a unique name and MAC address of the wireless devices that you want to manually add to the Wireless Control List, then click Add to add the device. SAVE FILTER SETTING button Click this button to save your changes to the MAC filter settings.

Configuring the Gateway’s mso Interface 121 SMCD3GNV Wireless Cable Modem Gateway User Manual Connect to Your WPS-Supported Device Figure 68 shows the WiFI client setup configuration settings on the WiFi menu, and Table 33 describes the fields shown. Figure 68. Wireless Menu – Connect to Your WPS-Supported Device Settings Table 33. Wireless Menu – Connect to Your WPS-Supported Device Settings Option Description Push Button Click this option to use the WPS button on the top panel of the Gateway to configure WPS (see Figure 3). 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 button Click this button to pair (connect) the Gateway’s Wi-Fi settings with your Wi-Fi client. Viewing XFINITY Network Information The XFINITY Network menu is a read-only screen that displays:  XFINITY network settings  Initialization procedure information, including cable modem and downstream channel bonding values The information shown on this menu automatically updates (refreshes) every 10 seconds. To display the XFINITY Network menu, click Gateway > Connection > XFINITY Network in the menu bar. Figure 69 shows an example of the XFINITY Network menu.

Configuring the Gateway’s mso Interface 122 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 69. Example of XFINITY Network Menu

Configuring the Gateway’s mso Interface 123 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Firewall in the menu bar. Figure 70 shows an example of the Firewall menu and Table 34 describes the menu. Figure 70. Example of the Firewall Menu Table 34. Firewall Menu Option Description Maximum Security (High) Configures the Gateway’s firewall to the highest setting. Select this setting for environments where security is critical. Typical Security (Medium) Configures the Gateway’s firewall for typical (medium) security. Select this setting for environments where security is important. Minimum Security (Low) Configures the Gateway’s firewall for minimum (low) security. Select this setting for environments where security is not important. Custom Security Clicking this option displays the custom security settings in Figure 71. For more information, see Table 35s. SAVE SETTINGS button After configuring your firewall settings, click this button to save them. RESTORE DEFAULT SETTINGS button Resets the Gateway to the factory default firewall settings.

Configuring the Gateway’s mso Interface 124 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 71. Custom Firewall Security Settings Table 35. Custom Security Settings Option Description Block http Blocks HTTP downloads on ports 80 and 443. Block ICMP Blocks Internet Control Message Protocol (ICMP) traffic at the outer perimeter of the Gateway to protect against attacks such as cascading ping floods. 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. 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. Disable entire firewall Disables all of the Gateway’s firewall settings.

Configuring the Gateway’s mso Interface 125 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Software in the menu bar. Figure 72 shows an example of the Software menu. Figure 72. Example of the Software Menu

Configuring the Gateway’s mso Interface 126 SMCD3GNV Wireless Cable Modem Gateway User Manual Configuring Hardware Using the submenus below Hardware, you can view information about the:  Gateway system hardware, such as model, serial number, and processor speed. See page 127.  Gateway’s battery status. See page 128.  Link status and MAC address of the Gateway’s four Ethernet ports. See page 129.  Wi-Fi link status and MAC address of the Gateway’s WiFi port . See page 130.

Configuring the Gateway’s mso Interface 127 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Hardware > System Hardware in the menu bar. Figure 73 shows an example of the System Hardware menu. Figure 73. Example of the System Hardware Menu

Configuring the Gateway’s mso Interface 128 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Hardware > Battery in the menu bar. Figure 74 shows an example of the Battery menu. Figure 74. Example of the Battery Menu

Configuring the Gateway’s mso Interface 129 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Hardware > LAN in the menu bar. Figure 75 shows an example of the LAN Ethernet menu. Figure 75. Example of the LAN Ethernet Menu

Configuring the Gateway’s mso Interface 130 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 Wi-Fi port. To display the WiFi menu, click Gateway > Hardware > WiFi in the menu bar. Figure 76 shows an example of the WiFi menu. Figure 76. Example of the WiFi Menu

Configuring the Gateway’s mso Interface 131 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Wizard in the menu bar. Figure 77 shows an example of the first page of the Home Network Wizard and Table 36 describes the page. Figure 77. Example of the First Page of the Home Network Wizard

Configuring the Gateway’s mso Interface 132 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 36. 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 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. Current Password Enter the current case-sensitive password. For security purposes, every typed character 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. New Password Enter the new password you want to use to protect your network. The password is case sensitive and can contain from 8 to 20 alphanumeric characters, but no spaces. Spaces count as password characters. For security purposes, every typed character appears as a dot (). Re-enter New Password Enter the same case-sensitive password you typed in the New Password field. For security purposes, every typed character appears as a dot (). NEXT STEP button Click this button to display the second page of the Home Network Wizard (see Figure 78 and Table 37).

Configuring the Gateway’s mso Interface 133 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 78. Example of the Second Page of the Home Network Wizard

Configuring the Gateway’s mso Interface 134 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 37. 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 more obvious for others to know which network they are connecting to. Encryption Method 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 selections available, including the following. (Risky appears next to selections that provide little or no protection). • Open = wireless transmissions are not protected. • 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). WEP 64- and 128-bit selections are provided. • WPA-PSK = designed for home and small-office networks. Each wireless network device encrypts the network traffic using a 256-bit key. Select this option if your wireless adapters support WiFi Protected Access Pre-shared Key (WPA-PSK) mode. • WPA2 = second generation of WPA that adds CCMP encryption with mathematically proven security. 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. • WPA2-Enterprise = second generation of WPA2-Enterprise. This option is mainly suited for enterprise users, not home users, and can be selected if your wireless adapters support WPA2-Enterprise. Enter Network Password If you select one of the WEP or WPA encryption settings, enter the password used for encryption and decryption. FINISH button Click this button to complete the Home Network Wizard.

Configuring the Gateway’s mso Interface 135 SMCD3GNV Wireless Cable Modem Gateway User Manual Working with Connected Devices Using the submenus under Connected Devices, you can:  View computers connected to the Gateway’s LAN  Add computer’s with static IP addresses to the Gateway’s LAN  Add WiFi-protected clients to the Gateway’s LAN All of these activities are performed form the Computers menu. To display the Computers menu, click Connected Devices in the menu bar. Figure 79 shows an example of the Computers menu. Figure 79. Example of the Computers Menu

Configuring the Gateway’s mso Interface 136 SMCD3GNV Wireless Cable Modem Gateway User Manual Manually Adding Computers with Static IP Addresses To manually add a computer with a static IP address to the Gateway’s LAN, perform the following procedure from the Computers menu. 1. Under Online Computers, click the ADD COMPUTER WITH STATIC IP button. The Add Computer menu appears (see Figure 80). 2. Complete the fields in the Add Computer menu (see Table 38). 3. 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. 4. To add more computers with static IP addresses, repeat steps 1 through 3. 5. 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 81 and Table 39), and click SAVE.<<I did not see this button??>> 6. 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 80. Example of the Add Computer Menu

Configuring the Gateway’s mso Interface 137 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 38. 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 the MAC address. For information about obtaining the MAC address of a computer, see “Determining a Computer’s MAC Address” on page 196. Static IP Address Static IP address of the computer you want to add. Add a period between each octet in the IP address. 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.

Configuring the Gateway’s mso Interface 138 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 81. Example of the Edit Computer Menu Table 39. 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 static IP address. If you select Static IP, enter the static IP address in the Static IP Address field. MAC Address Edit the MAC address of the selected computer. Add a colon between each 2-character ID in the MAC address. Static IP Address If you selected Static IP for Configuration, enter the computer’s static IP address. Add a period between each octet in the IP address. 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.

Configuring the Gateway’s mso Interface 140 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 82. Example of the Add Wireless Client Menu Table 40. Edit Wireless Client Menu Option Description WiFi Protected Setup (WPS) Enables or disables the Gateway’s WPS setup. • Enabled = Gateway’s WPS setup is activated. (default) • Disabled = Gateway’s WPS setup is not activated. Security Read-only screen that shows the security, if any, used on the Gateway’s wireless LAN. To change the security used, see the Encryption Method option in the Home Network Wizard – Step 2 menu (see “Configuring Your Home Network” on page 131). Encryption Read-only screen that shows the encryption method, if any, used on the Gateway’s wireless LAN. To change the encryption method used, see the Encryption Method option in the Home Network Wizard – Step 2 menu (see “Configuring Your Home Network” on page 131). Network Password Read-only screen that shows the network password you entered in the Enter Network Password option in the Home Network Wizard – Step 2 menu (see “Configuring Your Home Network” on page 131).

Configuring the Gateway’s mso Interface 141 SMCD3GNV Wireless Cable Modem Gateway User Manual Option Description Connection Options Determines whether WPS can be configured using a PIN or the WPS button on the front panel of the Gateway. • PIN = requires you to enter a PIN in the WPS Setup menu to configure WPS. The PIN can be viewed in the AP PIN option in the WiFi Client Setup Configuration (WP5) section of the Wireless Menu (see page 120). • PBC = Push Button Configuration. Lets you use the WPS button on the front panel of the Gateway to configure WPS. PAIR button Click this button to pair the wireless device settings with the Gateway’s LAN (can take up to 2 minutes). If your wireless device has a Pair button, you can press this button instead to pair the device with the Gateway’s LAN. CANCEL button Click this button to discard your settings on the Add Wireless Client menu. <<need this screen??>> Figure 83. Example of the Edit Device Menu Table 41. Edit Device Menu<<true??>> 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 static IP address. If you select Static IP, enter the static IP address in the Static IP Address field. MAC Address Edit the MAC address of the selected computer. Add a colon between each 2-character ID in the MAC address. Static IP Address If you selected Static IP for Configuration, enter the computer’s static IP address. Add a period between each octet in the IP address. 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.

Configuring the Gateway’s mso Interface 142 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 chat-rooms. 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 142.  Blocking services. See page 148.  Blocking devices and access types. See page 152. You can also define report filters and generate reports. See page 156. Blocking Sites and Keywords, and Selecting Trusted Computers Using the Managed Sites menu, you can restrict access to Web sites for non-trusted computers on the network. This procedure involves the following steps: 1. Specify the sites to be blocked. See “Specifying Sites to be Blocked” on page 143. 2. Specify the keywords to be blocked. See “Specifying Keywords to be Blocked” on page 145. 3. Identify the trusted computers that are allowed to access the blocked Web sites and keywords. See “Defining Trusted Computers” on page 147. To display the Managed Sites menu, click Parental Control in the menu bar. Figure 84 shows an example of the Managed Sites menu.

Configuring the Gateway’s mso Interface 143 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 84. Example of Managed Sites Menu Specifying Sites to be Blocked To block sites for non-trusted computers, perform the following procedure from the Managed Sites menu. 1. Next to Enable Managed Sites, click Enabled. 2. Under Blocked Sites, click ADD. The Add Blocked Domain menu appears (see Figure 85). 3. Complete the fields in the Add Blocked Domain menu (see Table 42). 4. 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. 5. To block additional sites, repeat steps 2 through 4. 6. 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 42), and click SAVE. 7. 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 Blocked Sites on the Managed Sites menu.

Configuring the Gateway’s mso Interface 144 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 85. Add Blocked Domain Menu Table 42. 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

Configuring the Gateway’s mso Interface 145 SMCD3GNV Wireless Cable Modem Gateway User Manual Option Description Set Blocked Days If you selected No for Always Block?, use any of the following methods to specify when the Gateway is to block this URL: • Select All = blocks the URL for seven days. • Select None = deselect blocking of the URL for seven days. • Monday – Sunday = check the check boxes that correspond to the days when you want the Gateway to block this URL. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Domain menu. Specifying Keywords to be Blocked To block keywords for non-trusted computers, perform the following procedure from the Managed Sites menu. 1. Next to Enable Managed Sites, click Enabled. 2. Under Blocked Keywords, click ADD. The Add Blocked Keyword menu appears (see Figure 86). 3. Complete the fields in the Add Blocked Keyword menu (see Table 43). 4. 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. 5. To block additional keywords, repeat steps 2 through 4. 6. 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 43), and click SAVE. 7. 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 Blocked Keywords on the Managed Keywords menu.

Configuring the Gateway’s mso Interface 146 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 86. Add Blocked Keyword Menu

Configuring the Gateway’s mso Interface 147 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 43. 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 Set Blocked Days If you selected No for Always Block?, use any of the following methods to specify when the Gateway is to block this keyword: • Select All = blocks the keyword for seven days. • Select None = deselect blocking of the keyword for seven days. • Monday – Sunday = check the check boxes that correspond to the days when you want the Gateway to block this keyword. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Keyword menu. Defining Trusted Computers Trusted computers let you exempt connected computers from the blocked site and blocked keyword rules you defined in the previous sections. To build a list of trusted computers, perform the following procedure from the Managed Sites menu. <<need to verify??>>

Configuring the Gateway’s mso Interface 148 SMCD3GNV Wireless Cable Modem Gateway User Manual Blocking Services and Selecting Trusted Computers Using the Managed Services menu, you can restrict access to certain services and applications for non-trusted computers on the network. This procedure involves the following steps: 1. Specify the services to be blocked. See “Specifying Services” on page 149. 2. Identify the trusted computers that are allowed to access the blocked services. See “Defining Trusted Computers” on page 151. To display the Managed Services menu, click Parental Control > Managed Services in the menu bar. Figure 87 shows an example of the menu. Figure 87. Example of Managed Services Menu

Configuring the Gateway’s mso Interface 149 SMCD3GNV Wireless Cable Modem Gateway User Manual Specifying Services to be Blocked To block services for non-trusted computers, perform the following procedure from the Managed Services menu. 1. Next to Enable Managed Services, click Enabled. 2. Under Blocked Services, click ADD. The Add Blocked Service menu appears (see Figure 88). 3. Complete the fields in the Add Blocked Service menu (see Table 44). 4. 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. 5. To block additional services, repeat steps 2 through 4. 6. 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 44), and click SAVE. 7. 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 Blocked Services on the Managed Services menu.

Configuring the Gateway’s mso Interface 150 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 88. Add Blocked Service Menu

Configuring the Gateway’s mso Interface 151 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 44. 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 • UDP • TCP/UDP (default) 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 Set Blocked Days If you selected No for Always Block?, use one of the following methods to specify when the Gateway is to block this service: • Select All = blocks the service for seven days. • Select None = deselect blocking of the service for seven days. • Monday – Sunday = check the check boxes that correspond to the days when you want the Gateway to block this service. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Domain menu. Defining Trusted Computers Trusted computers let you exempt connected computers from the blocked services rules you defined in the previous section. To build a list of trusted computers, perform the following procedure from the Managed Sites menu. <<need to verify??>>

Configuring the Gateway’s mso Interface 152 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Managed Devices in the menu bar. Figure 89 shows an example of the menu. Figure 89. Example of Managed Devices Menu Enabling or Disabling Managed Devices By default, all managed devices are disabled. To enable them, display the Managed Devices menu and click Enabled next to Enable Managed Devices. Enabling or Disabling Access Types By default, all access types are allowed. To block them, display the Managed Devices menu and click Block All next to Access Type.

Configuring the Gateway’s mso Interface 153 SMCD3GNV Wireless Cable Modem Gateway User Manual Adding Blocked Devices To add devices you want to block, perform the following procedure from the Managed Devices menu. 1. Next to Blocked Devices, click ADD BLOCKED DEVICE. The Add Blocked Device menu appears (see Figure 90). 2. Completed the fields in the Add Block Device menu (see Table 45). 3. 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. 4. To block additional devices, repeat steps 1 through 3. 5. 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 45), and click SAVE. 6. 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 Blocked Devices on the Managed Devices menu.

Configuring the Gateway’s mso Interface 154 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 90. Add Blocked Device Menu

Configuring the Gateway’s mso Interface 155 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 45. 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 Set Blocked Days If you selected No for Always Block?, use one of the following methods to specify when the Gateway is to block this device: • Select All = blocks the device for seven days. • Select None = deselect blocking of the device for seven days. • Monday – Sunday = check the check boxes that correspond to the days when you want the Gateway to block this device. SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Blocked Device menu.

Configuring the Gateway’s mso Interface 156 SMCD3GNV Wireless Cable Modem Gateway User Manual Generating Reports Using the Reports menu, you can define filters for managed sites, services, and devices, and then show, print or download the reports. To display the Reports menu, click Parental Control > Reports in the menu bar. Figure 91 shows an example of the menu. Figure 91. Example of Reports Menu Under Reports Filters, you can set a report filter for the type of reports you want to generate and the time frame they are to cover. If you do not set a report filter, the default filter is automatically set to all report types for the current day (today). After you define the filter, you can show, print, or download the report. 1. 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 2. Using the Time Frame drop-down list, select a time frame that the report is to cover. 3. To show the report, click the GENERATE REPORT button. 4. To print the report with the filter applied, click PRINT. 5. To download the report with the filter applied, click DOWNLOAD

Configuring the Gateway’s mso Interface 157 SMCD3GNV Wireless Cable Modem Gateway User Manual Using Advanced Features Using the Advanced Features menu, you can:  Enable or disable port forwarding. See page 157.  Enable or disable port triggering. See page 160.  Enable or disable remote management. See page 163.  Configuring DMZ settings. See page 165.  Configure routing. See page 167.  Configure Dynamic DNS. See page 169.  Use the Gateway’s UPnP feature to discover UPnP-enabled devices. See page 171. 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 the Gateway 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 can run a Web server (port 80) while another computer runs 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. Figure 92 shows an example of the menu.

Configuring the Gateway’s mso Interface 158 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 92. Example of Port Forwarding Menu Adding a Port Forwarding Rule To add a port forwarding rule, perform the following procedure from the Port Forwarding menu. 1. Next to Enable Port Forwarding, click Enabled. 2. Click the ADD PORT FORWARD button. The Add Service menu appears (see Figure 93). 3. Complete the fields in the Add Service menu (see Table 46). 4. 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. 5. To add more port forwarding rules, repeat steps 2 through 4. 6. 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 46), and click SAVE. 7. 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.

Configuring the Gateway’s mso Interface 159 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 93. Add Service Menu Table 46. 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 Gateway is configured for a single public IP port. Private Port(s) Numbers of the ports whose traffic the Gateway forwards to the LAN. If there is a range of 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). Enable Port Range Check this box to enable the private port range specified in Private Port(s). SAVE button Click this button to save your settings. CANCEL button Click this button to discard your settings on the Add Service menu.

Configuring the Gateway’s mso Interface 160 SMCD3GNV Wireless Cable Modem Gateway User Manual Disabling Port Forwarding You can disable individual or all port-forwarding rules from the Port Forwarding menu.  To disable an individual port-forwarding rule, uncheck the rule in the Active column. Although disabled, you can still use the buttons to the right of the checkbox to edit or delete the rule. To enable the rule, check the checkbox in the Active column.  To disable all port-forwarding rules, click Disabled next to Enable Port Forwarding. The ADD PORT FORWARD button becomes unavailable and all port forwarding rules turn gray to show they are disabled. In addition, the buttons to the right of the checkboxes become gray, preventing you from editing or deleting port-forwarding rules. To enable all port-forwarding rules, click Enabled next to Enable Port Forwarding. Enabling or Disabling Port Triggering Using the Port Triggering menu, you can configure the Gateway to detect port triggers for multiple-session applications and allow them to pass through 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 > Port Triggering in the menu bar. Figure 94 shows an example of the menu.

Configuring the Gateway’s mso Interface 161 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 94. Example of Port Triggering Menu Adding a Port Triggering Rule To add a port triggering rule, perform the following procedure from the Port Triggering menu. 1. Next to Enable Port Triggering, click Enabled. 2. Click the ADD PORT FORWARD button. The Port Triggering Add menu appears (see Figure 95). 3. Complete the fields in the Port Triggering Add menu (see Table 47). 4. 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. 5. To add more port triggering rules, repeat steps 2 through 4. 6. 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 47), and click SAVE. 7. 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.

Configuring the Gateway’s mso Interface 162 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 95. Port Triggering Add Menu Table 47. 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 Port Triggering Add menu.

Configuring the Gateway’s mso Interface 163 SMCD3GNV Wireless Cable Modem Gateway User Manual Disabling Port Triggering You can disable individual or all port-triggering rules from the Port Triggering menu.  To disable an individual port-triggering rule, uncheck the rule in the Active column. Although disabled, you can still use the buttons to the right of the checkbox to edit or delete the rule. To enable the rule, check the checkbox in the Active column.  To disable all port-triggering rules, click Disabled next to Enable Port Triggering. The ADD PORT TRIGGER button becomes unavailable and all port triggering rules turn gray to show they are disabled. In addition, the buttons to the right of the checkboxes become gray, preventing you from editing or deleting port-triggering rules. To enable all port-triggering rules, click Enabled next to Enable Port Triggering. Remote Management The Gateway supports centralized administration and management via the following methods:  HTTP  HTTPS  Telnet  SSH  SNMP  HNAP Using the Remote Management menu, you can independently enable or disable these remote management methods. The Remote Management menu also lets you provide remote access to a single computer, a group of computers that fall within a particular range of IP addresses, or any computer. To display the Remote Management menu, click Advanced > Remote Management in the menu bar. Figure 96 shows an example of this menu and Table 48 describes the settings.

Configuring the Gateway’s mso Interface 164 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 96. Example of Remote Management Menu

Configuring the Gateway’s mso Interface 165 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 48. Remote Management Menu Option Description Remote Management Remote Management You can remotely manage the Gateway using HTTP, HTTPS, Telnet, SSH, SNMP, and HNAP. Each method has Enabled and Disabled buttons for enabling or disabling that remote management method. If you enable a remote management method, specify the port number to be used with that method in the field to the left of Enabled. Note: The Gateway’s remote management address appears below HNAP. Remote Access Allowed From Remote Access Allowed From Lets you provide remote access to Gateway for one computer, all computers on the Internet, or computers that fall within a specified range of IP addresses. Choices are: • Single Computer = to allow a single computer to remotely manage the Gateway, check this option and enter the IP address of the computer next to IP Address. • Range of IPs = to allow a group of computers to remotely manage the Gateway, check this option. Then enter the starting range of IP addresses next to Start IP Address boxes and the ending range of IP addresses next to End IP Address. • Any Computer = allows any computer on the Internet to access your network. This setting can cause a security risk. Configuring DMZ Settings If you have a local client computer that cannot run an Internet application properly behind the NAT firewall, you can configure it for unrestricted two-way Internet access by defining it as a Virtual DMZ host. A DMZ allows a single computer on your LAN to expose all of its ports to the Internet. When doing this, the exposed computer is no longer “behind” the firewall. Therefore, placing a computer in the DMZ should be considered temporary because your firewall is no longer able to provide any security to it.. You configure the Gateway’s DMZ settings using the DMZ menu. To display this menu, click Advanced > DMZ in the menu bar. Figure 97 shows an example of this menu and Table 49 describes the settings.

Configuring the Gateway’s mso Interface 166 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 97. Example of DMZ Menu Table 49. DMZ Menu Option Description Enable DMZ Enables or disables the Gateway’s DMZ setting. • Enabled = Gateway’s DMZ feature is enabled. • Disabled = Gateway’s DMZ feature is disabled. DMZ Host IP addresses of the computer to be used as the DMZ server. SAVE button Click this button to save your settings.

Configuring the Gateway’s mso Interface 167 SMCD3GNV Wireless Cable Modem Gateway User Manual Configuring Routing Settings Using the Routing menu, you can configure how the Gateway adjusts to physical changes in the network’s layout and exchanges routing tables with other routers. To access the Routing menu, click Advanced > Routing in the menu bar. Figure 98 shows an example of the menu and Table 50 describes the settings. Figure 98. Example of Routing Menu

Configuring the Gateway’s mso Interface 168 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 50. Routing Menu Option Description Interface Name Select the Gateway interface on which routing will be performed. RIP Send Version Select the format and the broadcasting method of the RIP packets that the Gateway sends. Choices are: • Do Not Send (default) • RIP1 • RIP2 • RIP1/2 Your selection should match the version supported by other routers on your network. RIP Receive Version Select the format and the broadcasting method of the RIP packets that the Gateway receives. Choices are: • Do Not Receive (default) • RIP1 • RIP2 • RIP1/2 Your selection should match the version supported by other routers on your network. Update Interval How often, in seconds, the Gateway sends routing-update messages. Default is 30 seconds. Default Metric Number by which the metric value for the path increases when the Gateway receives a routing update that includes changes to an entry. Choices are 1 – 15. Default is 1. Authentication Type The authentication mechanism used, if any. Choices are: • No Authentication = no authentication is used. If you keep this default setting, the Authentication Key & ID fields are gray and unavailable. (default) • Simple Password = an authentication method where a clear text password is sent to participating neighbors on the network. This selection sends the authenticating password over the network, possible making it available to individuals who can access packets off the network. Do not use this option as part of your security strategy, Rather, use it to avoid accidental changes to the routing infrastructure. If you select this setting, the first field in the Authentication Key & ID option becomes available for entering the password. • MD5 = an authentication method that works much like Simple Password authentication, except that MD5 does not send the key over the network. Instead, a router uses the MD5 algorithm to produce a message digest of the key (also called a hash). The router sends the message digest instead of the key itself, which ensures that no one can eavesdrop on the network and learn keys during transmission. If you select this setting, the first field in the Authentication Key & ID option becomes available for entering the key and the second field becomes available for entering the ID. Authentication Key & ID Specify the appropriate information based on the Authentication Type selected: • No Authentication – no entry required; fields are gray and unavailable. (default) • Simple Password = in the first field, enter the clear-text password to be used for authentication. The second field requires no entry, and is gray and unavailable. • MD5 = in the first field, enter the MD5-hash password. In the second field, enter the Key Identifier that identifies the key used to create the authentication data for this message. Neighbor Enter the IP address of the Gateway’s RIP neighbor router. SAVE button Click this button to save your settings.

Configuring the Gateway’s mso Interface 169 SMCD3GNV Wireless Cable Modem Gateway User Manual Configuring Dynamic DNS Settings The Gateway provides a dynamic DNS feature that can notify a domain name server to change, in real time, the active DNS configuration of its configured hostnames, addresses, or other information stored in DNS. If you have already set up a dynamic domain service with a service provider, use the following procedure to set up the Gateway to update your DDNS automatically whenever your Internet connection's IP address changes. 1. Click Advanced > Dynamic DNS. The Dynamic DNS menu appears (see Figure 99). 2. Complete the fields in the Dynamic DNS menu (see Table 51). 3. Click SAVE to save your settings (or click CANCEL to discard them) Figure 99. Example of Dynamic DNS Menu

Configuring the Gateway’s mso Interface 170 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 51. Dynamic DNS Menu Option Description Enable Dynamic DNS Enables or disables the Gateway’s Dynamic DNS setting. • Enabled = Gateway’s Dynamic DNS feature is enabled. • Disabled = Gateway’s Dynamic DNS feature is disabled. Server Provider Select a service provider. User Name Enter your service provider user name that you set up. Password Enter your service provider password that you set up. The password must be at least 6 characters long. For security, each password character appears as a dot (●). Host Name Enter the complete Host Name that you setup with service provider. To specify more than one host name, click the +ADD button and enter the next host name in the box that appears. To remove a host name, click Remove next to the host name you want to remove. SAVE button Click this button to save your settings. CANCEL SETTINGS button Click this button to discard your settings on the Dynamic DNS menu.

Configuring the Gateway’s mso Interface 171 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Device Discovery in the menu bar. Figure 100 shows an example of the menu and Table 52 describes it. Figure 100. Example of Device Discovery Menu

Configuring the Gateway’s mso Interface 172 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 52. Device Discovery Menu Option Description Enable UPnP Determines whether the Gateway uses its UPnP feature to communicate with other devices or 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. Advertisement Period How often the Gateway broadcasts its UPnP information (if UPnP is enabled). This value can 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. Time To Live A counting mechanism to determine how long a packet is valid before it reaches its 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. Enable Zero Config Determines whether zero configuration is enabled or disabled. Zero configuration networking automatically creates a usable Internet Protocol (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.

Configuring the Gateway’s mso Interface 173 SMCD3GNV Wireless Cable Modem Gateway User Manual Troubleshooting the Gateway Using the Troubleshooting menu, you can:  Define log filters and generate logs. See page 174.  Test connectivity to a destination or IP address. See page 175.  Reset the Gateway, reset your Wi-Fi router, or restore the Gateway’s WiFi and factory default settings. See page 177.  Change the password used to log in to the Gateway’s Web interface. See page 178. Note: For additional troubleshooting procedures, see Chapter 6.

Configuring the Gateway’s mso Interface 174 SMCD3GNV Wireless Cable Modem Gateway User Manual Generating Logs Using the Logs menu, you can define filters for system, event, and firewall logs, and then show, print or download the logs. To display the Logs menu, click Troubleshooting > Logs in the menu bar. Figure 101 shows an example of the menu. Figure 101. Example of Logs Menu Under Logs Filters, you can set a log filter for the type of logs you want to generate and the time frame they are to cover. If you do not set a log filter, the default filter is automatically set to system log types for the current day (today). After you define the filter, you can show, print, or download the log. 4. 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 5. Using the Time Frame drop-down list, select a time frame that the log is to cover. 6. To show the log, click the SHOW LOGS button. 7. To print the log with the filter applied, click PRINT. 8. To download the log with the filter applied, click DOWNLOAD.

Configuring the Gateway’s mso Interface 175 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Diagnostic Tools in the menu bar. Figure 102 shows an example of the menu. Figure 102. Example of the Network Diagnostic Tools Menu

Configuring the Gateway’s mso Interface 176 SMCD3GNV Wireless Cable Modem Gateway User Manual Testing Connectivity to a Destination Address To test the Gateway’s connectivity to a destination address, perform the following procedure from the Network Diagnostic Tools menu. 1. 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. 2. 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. 3. 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, perform the following procedure from the Network Diagnostic Tools menu. 1. 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. 2. Click the CHECK FOR IP ADDRESSES button. The Connectivity indicator shows the results of the test. 3. 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.

Configuring the Gateway’s mso Interface 177 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 WI-FI SETTINGS – returns the Gateway to its factory default WiFI settings. Settings that are not related to the Gateway’s wireless operation are not changed.  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 > Restore/Reboot Gateway in the menu bar. Figure 103 shows an example of the menu. Figure 103. Example of the Restore / Reboot Gateway Menu

Configuring the Gateway’s mso Interface 178 SMCD3GNV Wireless Cable Modem Gateway User Manual 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 > Change Password in the menu bar, or click the Change Password link at the top-right area of the Web management interface. Figure 104 shows an example of the menu and Table 53 describes the menu. Figure 104. Example of the Change Password Menu Table 53. 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.

179 SMCD3GNV Wireless Cable Modem Gateway User Manual 6 Troubleshooting Procedures Successful troubleshooting requires a logical, consistent approach that narrows down the source of a problem by ascertaining what is and isn't working until a single cause is identified. This chapter provides suggestions for identifying and resolving problems in the unlikely event you encounter a problem using the Gateway. It also provides tips for tuning your configuration to optimize your wired and wireless networking experience. The topics covered in this chapter are: Topic Subtopics Basic Troubleshooting Procedures See page 180 Advanced Troubleshooting Procedures • Troubleshooting Physical Network Problems (page 182) • Troubleshooting Configuration Problems (page 183) • Determining Your IP Address (page 183) • Troubleshooting Software-Interaction Problems (page 187) Specific Troubleshooting Procedures • Unable to Log In to Gateway (page 188) • Local Networked Devices Unable to Access the Gateway (page 188) • Unable to Access the Internet (page 189) • Unable to Access Networked Devices (page 191) • Using the Ping Utility to Troubleshoot (page 191) • Gateway Disconnects from the Internet (page 194) • Slow Web Browsing (page 195) • Unable to Configure Port Forwarding (page 195) • Unable to Use Pass-thru VPN (page 195) • Gateway is Not Passing DHCP Address to a computer (page 195) • Determining a Computer’s MAC Address (page 196) Wireless Troubleshooting See page 198 Application and Gaming Troubleshooting See page 204

Troubleshooting Procedures 180 SMCD3GNV Wireless Cable Modem Gateway User Manual Basic Troubleshooting Procedures The following procedures cover basic troubleshooting procedures. Carefully review the sections to make sure you follow the recommended procedures. Always start your network using the following sequence 1. Unplug the Gateway and any other routers or switches. 2. Shut down connected computers. 3. Plug in the Gateway first and wait for the lights to cycle through the startup routine. This prevents another device from taking the DHCP lease. 4. Plug in any other routers and switches. 5. Lastly, start up your computer. Check basic Gateway functions After you turn on power to the Gateway, check that the following LED sequences have occurred (and see “Front Panel” on page 13): 1. When power is first applied, verify that the Power LED is ON. 2. After about a minute, verify the statuses of the following LEDs on the front panel of the Gateway (see Figure 1 on page 13):  Online = ON (Gateway is operational)  DS = ON (Gateway is connected to the Internet)  US = ON (Gateway is connected to the Internet)  WiFi = ON (Gateway is ready for wireless operation) If this behavior does not occur, see Table 54. If the incorrect behavior persists, use the Reset button to return the Gateway to its factory default configuration settings (see “Using the Reset Button” on page 17).

Troubleshooting Procedures 181 SMCD3GNV Wireless Cable Modem Gateway User Manual Table 54. Checking Basic Gateway Functions If… Perform This Procedure The Power and other LEDs are OFF. 1. Turn off the Gateway and then turn it on again to see whether the problem is resolved. 2. Check that you are using the power adapter supplied with the Gateway. 3. Be sure the power cord is connected to the Gateway and to a functioning power outlet. 4. Plug a working device, such as a lamp, into the power outlet to confirm that the outlet is working. 5. Be sure the power outlet is not controlled by a wall switch that can inadvertently remove power from the outlet The DS and US LEDs are OFF. 1. Be sure the Ethernet cable connections are secure at the Gateway and at the computer. 2. Be sure that power is turned on to the computer connected to the Gateway. 3. Be sure you are using the Ethernet cable supplied with the Gateway or one configured similarly to it. The WiFI LED is OFF. See “Checking the Gateway’s Wireless Connection” on page 198. Check the Gateway’s telephone interfaces To confirm that the Gateway’s two telephone interfaces are working properly: 1. Lift the handset of the device connected to the Gateway’s telephone 1 interface, Confirm that the Tel1 LED goes ON. Hang up the device (place the device onhook) and confirm that the Tel1 LED goes OFF. 2. Lift the handset of the device connected to the Gateway’s telephone 2 interface, Confirm that the Tel2 LED goes ON. Hang up the device (place the device onhook) and confirm that the Tel2 LED goes OFF.

Troubleshooting Procedures 182 SMCD3GNV Wireless Cable Modem Gateway User Manual Advanced Troubleshooting Procedures Most advanced troubleshooting procedures fall into one of the following categories:  Physical - an underlying problem with cables, a bad Gateway, or similar hardware problem. See page 182.  Configuration - a problem with the configuration of one or more of network components. See page 183.  Software - a failure of one or more software applications, an undesired interaction between two or more applications, or an undesired application that has been introduced into the network. See page 187. Troubleshooting Physical Network Problems When you experience network troubles, start by checking the physical network devices and connections. These problems are the most easily fixed and include:  Performing a thorough physical inspection of your network.  Checking that all hardware devices, including the Gateway, are plugged in and physically connected to the network.  Making sure you are using the proper network cables (for example, not using a crossover cable with a NIC that requires a straight-through cable).  Making sure all network cables are in good condition and well seated. Often, reseating the cable into a connector is all that is required to ensure a firm connection. In addition, some operating systems, such as Microsoft Windows XP, show errors, such as when a network cable is unplugged. Figure 2, for instance, shows examples of how Microsoft Windows XP shows connection statuses in the Network Connections window. For information about other operating systems, refer to the documentation for those operating systems.

Troubleshooting Procedures 183 SMCD3GNV Wireless Cable Modem Gateway User Manual Connected. Your computer is properly connected to the Gateway or wired/wireless network, but there is a problem between the Gateway and the Internet. Disabled. Someone has manually disabled the NIC. To fix the problem, right-click the adapter and click Enable. Unplugged. Your computer cannot detect the connection to the Gateway. Not connected. Your computer cannot connect to your wireless network. Limited or no connectivity. Your computer is properly connected to the Gateway, but either the Gateway is misconfigured or there is a problem between the Gateway and the Internet. Figure 105. Examples of Connectivity Statuses for Microsoft Windows XP Troubleshooting Configuration Problems After confirming that your hardware is working properly, examine your networking configuration to determine whether there is a misconfiguration of IP addresses, subnet masks, gateways, or broadcast addresses. Common configuration problems can be caused by misconfiguring newly connected or configured devices. Determining Your IP Address An IP address uniquely identifies computers and computing devices, such as the Gateway, on a TCP/IP network. IP addresses are normally expressed in dotted-decimal format, with four numbers (or “octets”) separated by periods, such as 10.1.10.1. For troubleshooting purposes, all the numbers in the IP addresses of your networked devices must be consistent across the network. This means:  The first nine numbers (i.e., the first three octets) in the IP addresses are the same for all the devices on the network.  The last three numbers (i.e., the last octet) in the IP addresses are different and not in use by other devices on the network (assuming your subnet mask is 255.255.255.000). For example, if the IP address for the Gateway is 10.1.10.1, the other devices on the network must have an IP address whose:  First three octets are 10.1.10.

Troubleshooting Procedures 184 SMCD3GNV Wireless Cable Modem Gateway User Manual  Last octet is any unique number from 0 to 255 (there are restrictions on using 0 and 255, so avoid using them). You would not use 1 as the last number, since that number is the last octet in the Gateway IP address in our example. Figure 106 shows an example of IP addresses assigned to devices on the network. Figure 106. Example of IP Addresses for Networked Devices You define the computer’s IP address using the procedure appropriate for your operating system, as described in Chapter 3. Tip: The following Windows sections describe how to use the command-line program Windows IP Configuration (ipconfig) to see the IP address of a computer running a Windows operating system. However, if you want even more information, such as IP routing and DHCP information, type ipconfig /all instead of ipconfig in the Windows sections that follow.

Troubleshooting Procedures 185 SMCD3GNV Wireless Cable Modem Gateway User Manual The most common problem associated when viewing IP addresses is that either:  A computer’s IP address is not on the same subnet as the other networked devices. In other words, the first nine numbers (three octets) in the device’s IP address are not identical to those of the other networked devices.  A computer shows an IP address that starts with the digits 169.254. When this happens, it often means the computer could not retrieve a network address from a DHCP server and therefore automatically assigned itself an address from the base network address 169.254. This would be fine if all the computers on your network used IP addresses from the 169.254 base network address. If one of them isn’t, however, that computer will have problems connecting to the other network computers. Possible causes for an IP address not being assigned are:  Defective cables Replace the cable if it is worn or defective.  An Ethernet cable may not be firmly connected at both ends. Secure the cable at both ends. Often, just reseating the cable into a connector is all that is required.  The NIC may be bad or the network cable connected to it may be the wrong kind (for example, it might be a straight-through cable when a crossover cable is required). If you have another NIC and cable available, try using them instead.  The Gateway port may be bad. Plug the network cable into a different port on the Gateway.  The DHCP server that would automatically assign IP addresses is not configured for DHCP.  Wrong WEP or WPA settings are configured on the Gateway or access point for wireless connections. The sections that follow describe how to identify the IP addresses on devices running Windows and Macintosh operating systems. Microsoft Windows 2000 To find the IP address of a computer running Microsoft Windows 2000: 1. From the Windows task bar, click Start and select Run. 2. In the Open field, type cmd and click OK. A DOS command window appears. 3. In the DOS command window, type ipconfig and then press Enter. Your IP address will be listed (see Figure 107). 4. When you finish, type exit at the command prompt and press Enter to close the window

Troubleshooting Procedures 186 SMCD3GNV Wireless Cable Modem Gateway User Manual Figure 107. Example of an IP Address Microsoft Windows XP, Vista, and 7 To find the IP address of a computer running Microsoft Windows XP, Vista, or 7: 1. Click on Start and in the Start Search box type cmd. 2. Press Enter on your keyboard or click cmd.exe in your search list (see Figure 108). Figure 108. Example of md.exe in the Search List 3. In the DOS command window, type ipconfig and then press Enter. Your IP address will be listed (see Figure 107). 4. When you finish, type exit at the command prompt and press Enter to close the window. Sample IP Address

Troubleshooting Procedures 187 SMCD3GNV Wireless Cable Modem Gateway User Manual Apple Macintosh OS X To find the IP address of a Mac OS X OS X 10.6 or 10.5 computer: 1. From the Apple menu, select System Preferences... 2. In System Preferences, from the View menu, select Network. 3. In the Network preference window, click a network port (for example, Ethernet, AirPort, modem). If you are connected, the IP address appears below Status. 4. Close the window when finished. To find the IP address of a Mac OS X 10.4 or 10.3 computer: 1. From the Apple menu, select Location, and then Network Preferences... 2. In the Network Preference window, next to Show:, select Network Status. Your network status and IP address appear. 3. Close the window when finished. Via the Web There are various Web sites, such as http://whatismyipaddress.com/, that display your IP address and other information about your system. If the page does not display, you may not have a working Internet connection and should try one of the methods described above to find your IP address. Troubleshooting Software-Interaction Problems If the physical network and basic configuration procedures in the preceding sections do not resolve your problem, focus on software problems. The most common software problems are related to firewalls. Many third-party antivirus programs include built-in firewalls. You may not realize that you installed the firewall component when you installed the antivirus software, and now the firewall may be interfering with your network connectivity. To troubleshoot software problems: 1. Disconnect your network from the Internet so that you can safely disable any firewalls or antivirus software while you troubleshoot. 2. Disconnect the Gateway from the Internet and unplug the Gateway. 3. After you are off the Internet, disable any antivirus or firewall programs you have, including Internet Connection Firewall or Windows Firewall, on all the computers that have problems. If this step solves the problem, the problem exists with one of these Windows features or products. Enable one at a time and see when things break again. When they do, you know where the problem is and you can either replace that product with one that does not cause problems or change the program's configuration to resolve the problem.

Troubleshooting Procedures 188 SMCD3GNV Wireless Cable Modem Gateway User Manual 4. When you have everything working, reconnect your devices to the Internet. 5. Restart all your computers. Specific Troubleshooting Procedures The following sections cover specific troubleshooting suggestions you may find helpful if the basic and advanced troubleshooting procedures in the previous sections did not resolve your problem. Unable to Log In to Gateway If you are unable to log in to the Gateway’s Web management interface: 1. Confirm that the Ethernet cable connecting the computer and Gateway is connected securely at both ends. Often, just reseating the cable into a connector is all that is required. 2. If you have more than one network port available on the Gateway, plug the cable into a different port. If the network connection works, the original port on the Gateway is faulty. However, you can continue to use the other ports. 3. The NIC in your computer might have failed. If possible, connect a different computer to the same network cable. If the connection works, the problem is with the NIC. Contact the NIC manufacturer for support or install a new NIC. If the new computer also fails to connect, replace the Ethernet cable with a new cable, as you might have a faulty cable. If the problem persists, contact technical support for the Gateway. 4. Be sure you are using the correct login information. The factory default login name is cusadmin and the password is highspeed. Be sure Caps Lock is off when entering this information. 5. Run the Home Network Wizard (see “Configuring Your Home Network” on page 60). 6. Change the login password (see “Changing the Login Password” on page 99). Local Networked Devices Unable to Access the Gateway If devices on the local network cannot access the Gateway: 1. Go to Connection > Status (see “Viewing the Gateway’s Connection Status” on page 44). 2. Under Local IP Network, check that the following statuses are shown: – Local Network = Connected – No of Clients connected = a number greater than zero If your statuses show no local network connection and/or no clients connected, proceed to the next step.

Troubleshooting Procedures 189 SMCD3GNV Wireless Cable Modem Gateway User Manual 3. Be sure the computer connected to the Gateway is configured to use the same subnet mask and gateway settings as the Gateway (see “Viewing and Editing Your Local IP Configuration” on page 47). 4. Ping the Gateway from a computer on the same subnet as the Gateway (see “Testing the Path from a Computer to the ” on page 191). If the ping fails and there is no firewall software installed, your network configuration, NIC, or cabling is probably at fault. 5. Release and renew the NIC’s IP address: a. From the Windows task bar, click Start and select Run. b. In the Open field, type cmd and click OK. c. At the first command prompt, type ipconfig/release and press Enter. d. At the next command prompt, type ipconfig/renew and press Enter. e. Check whether your computer obtained an IP address other than 169.254.x.x or 0.0.0.0. 6. If the problem continues, power cycle the Gateway and computer: a. Turn off the computer and turn off Gateway. b. Turn on the Gateway and turn on computer. 7. For secured wireless connections, be sure you entered the correct security key when connecting to a secured wireless network. Unable to Access the Internet If the Gateway cannot access the Internet, it could be due to several reasons, such as a failed Internet connection, a misconfigured Gateway, or a misconfigured NIC. 1. Unplug the Gateway. Note: If the Gateway is located where you cannot easily unplug it, you can restart it using the Restore / Reboot Gateway menu (“Restoring or Rebooting the Gateway” on page 98). 2. Turn off the Gateway for three minutes. 3. Turn off all computers attached to your network. 4. Plug in the Gateway first, turn it on, and let it boot. 5. After the Gateway completes its connection to the ISP, restart your computer. 6. Check that the Gateway’s Online LED is ON. If it is OFF, replace the coaxial cable connecting the Gateway to the cable service. If the Online LED does not go ON after the Gateway has been powered up for several minutes, contact your cable provider to confirm that the service is active.

Troubleshooting Procedures 190 SMCD3GNV Wireless Cable Modem Gateway User Manual 7. If the Online LED is ON, go to Connection > Status (see “Viewing the Gateway’s Connection Status” on page 44). Then, under Comcast Network, confirm that Internet = Active. If it isn’t, contact your cable provider to confirm that the service is active. 8. If you have more than one network port available on the Gateway, plug the cable into a different port. If the network connection works, the original port on the Gateway is faulty. However, you can continue to use the other ports. 9. Close any network applications that you might have opened, especially file-sharing and peer-to-peer applications. These applications can consume large amounts of bandwidth that can prevent you from being able to browse the Web. 10. Ping a location on the Internet (see “Testing the Path from a Computer to the Internet” on page 192). For example, ping www.yahoo.com. If the ping succeeds, proceed to the next step. If the ping fails:  Your Web browser may be misconfigured. Be sure you do not have an incorrect proxy server setting in your Web browser.  If your computer is running a Microsoft Windows operating system, check whether the computer has a corrupt winsock registry entry (refer to your Windows documentation).  The site might be down. Try to ping another site.  If your additional pings fail, please contact technical support. 11. Check your computer’s operating system to see whether the computer has connectivity (for example, see Figure 105 and refer to the documentation for your operating system). If it doesn’t, try using another computer and NIC attached to the Gateway to connect to the Internet. 12. Try accessing the Internet with a different browser. If you succeed, the problem exists with the previous browser you used.

$Troubleshooting Procedures 191 SMCD3GNV Wireless Cable Modem Gateway User Manual Unable to Access Networked Devices If you are on a network, but cannot connect to any resources on the network: 1. The Ethernet cable may be worn. Replace the cable if it is worn. 2. The Ethernet cable may not be firmly connected at both ends. Secure the cable at both ends. Often, just reseating the cable into a connector is all that is required. 3. The port on the Gateway may be bad. Plug the network cable into a different port on the Gateway. 4. The NIC may be bad or the cable connected to the NIC may be the wrong kind of network cable (for example, you may be using a straight-through cable when a crossover cable is required). If you have another NIC available, try using it instead of the one currently used. 5. Ping the IP address of other computers and devices on your network. 6. For Windows operating systems: – Try connecting to a computer on the network using Start \ Run and enter \\PCname, where PCname is the name of the computer you want to connect to. – Add the computer and its IP address to the LMHOSTS file. This is a text file that resides in the Windows\System32\drivers\etc directory (for Windows2000 or XP) and has the format IP_Address Computer_Name. Tip: Browsing is fairly complicated issue and has a lot of places for failure. If you need to have resources available, create shortcuts on your desktop instead. Using the Ping Utility to Troubleshoot You can use your computer’s ping utility to test the path from the computer to the Gateway and from your computer to the Internet. Testing the Path from a Computer to the Gateway You can ping the Gateway to verify that the LAN path from your computer to the Gateway is set up correctly. To ping the Gateway from a Windows computer: 1. From the Windows task bar, click Start and select Run. 2. In the Open field, type ping followed by the IP address of the Gateway. 3. Click OK. A message similar to the following appears (in this example, 192.168.0.1 is the IP address entered as part of the ping command): Pinging 192.168.0.1 with 32 bytes of data If the destination IP address was contacted successfully, a message similar to the following appears:$

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