Reference Manual for the Model DG632 ADSL Modem Router NETGEAR, Inc.
© 2004 by NETGEAR, Inc. All rights reserved. April 2004. Trademarks NETGEAR is a trademark of Netgear, Inc. Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Other brand and product names are registered trademarks or trademarks of their respective holders. Statement of Conditions In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes to the products described in this document without notice.
Bestätigung des Herstellers/Importeurs Es wird hiermit bestätigt, daß das DG632 ADSL Modem Router gemäß der im BMPT-AmtsblVfg 243/1991 und Vfg 46/ 1992 aufgeführten Bestimmungen entstört ist. Das vorschriftsmäßige Betreiben einiger Geräte (z.B. Testsender) kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die Anmerkungen in der Betriebsanleitung.
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Contents Chapter 1 About This Manual Audience, Conventions, Scope ......................................................................................1-1 How to Use this Manual ..................................................................................................1-2 How to Print this Manual .................................................................................................1-3 Chapter 2 Introduction About the Modem .................................................................
Record Your Internet Connection Information ..........................................................3-4 Connecting the DG632 to Your Network .........................................................................3-5 How to Connect the Modem .....................................................................................3-5 Auto-Detecting Your Internet Connection Type ........................................................3-9 Wizard-Detected PPPoE Login Account Setup ...............................
Internet Connection Requires Login and Uses PPPoE ............................................6-3 Internet Connection Requires Login and Uses PPPoA ............................................6-3 Internet Connection Does Not Require A Login .......................................................6-4 ADSL Settings ..........................................................................................................6-5 Router Mode Network Management Information .............................................
Chapter 7 Troubleshooting Basic Functioning ...........................................................................................................7-1 Power LED Not On ...................................................................................................7-2 LAN or WAN Port LEDs Not On ...............................................................................7-2 Troubleshooting the Web Configuration Interface ..........................................................
Internet Security and Firewalls .................................................................................... B-10 What is a Firewall? .................................................................................................B-11 Stateful Packet Inspection ......................................................................................B-11 Denial of Service Attack .........................................................................................B-11 Ethernet Cabling ..............
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Chapter 1 About This Manual Congratulations on your purchase of the NETGEAR® DG632 ADSL Modem Router. This chapter introduces important features of this manual. Audience, Conventions, Scope This reference manual assumes that the reader has basic-to-intermediate computer and Internet skills. However, basic computer network, Internet, firewall, and networking technology tutorial information is provided in the appendices. This guide uses the following typographical conventions: Table 1.
Reference Manual for the Model DG632 ADSL Modem Router How to Use this Manual The HTML version of this manual includes a variety of navigation features as well as links to PDF versions of the full manual and individual chapters. 2 1 3 Figure Preface -2: HTML version of this manual 1. Left pane. Use the left pane to view the Contents, Index, Search, and Favorites tabs. To view the HTML version of the manual, you must have a version 4 or later IE or Netscape browser with JavaScript enabled. 2.
Reference Manual for the Model DG632 ADSL Modem Router How to Print this Manual To print this manual you may choose one of the following options, according to your needs: • Printing a “How To” Sequence of Steps in the HTML View. Use the Print button on the upper right of the toolbar to print the currently displayed topic. Using this button when a step-by-step procedure is displayed will send the entire procedure to your printer. You do not have to worry about specifying the correct range of pages.
Reference Manual for the Model DG632 ADSL Modem Router 1-4 About This Manual
Chapter 2 Introduction This chapter describes the features of the NETGEAR DG632 ADSL Modem Router. The DG632 modem router is a combination of a built-in ADSL modem, router, and firewall which enables your network to safely share an Internet connection that otherwise is used by a single computer. Note: If you are unfamiliar with networking and routing, refer to Appendix B, “Network and Routing Basics” to become more familiar with the terms and procedures used in this manual.
Reference Manual for the Model DG632 ADSL Modem Router – Modem Device Mode supports configuration of your Internet connection on your computer, and running software on your computer to log in to your ISP, if needed. – Router Device Mode supports configuration of your Internet connection on your DG632 modem router, and can be configured to automatically log in to your ISP, if needed. These features are discussed below.
Reference Manual for the Model DG632 ADSL Modem Router • Classical IP (RFC 1577) Some Internet service providers, in Europe for example, use Classical IP in their ADSL services. In such cases, the modem is able to use the Classical IP address from the ISP. • PPP over Ethernet (PPPoE) PPP over Ethernet is a protocol for connecting remote hosts to the Internet over an ADSL connection by simulating a dial-up connection.
Reference Manual for the Model DG632 ADSL Modem Router Easy Installation and Management You can install, configure, and operate the DG632 within minutes after connecting it to the network. The following features simplify installation and management tasks: • Browser-based management Browser-based configuration allows you to easily configure your modem from almost any type of personal computer, such as Windows, Macintosh, or Linux.
Reference Manual for the Model DG632 ADSL Modem Router What’s In The Box? The product package should contain the following items.
Reference Manual for the Model DG632 ADSL Modem Router • • • DG632 ADSL Modem Router Installation Guide A Printed Quick Installation Guide Warranty and Support Information Cards If any of the parts are incorrect, missing, or damaged, contact your NETGEAR dealer. Keep the carton, including the original packing materials, in case you need to return the router for repair. The Front Panel The DG632 ADSL Modem Router front panel shown below contains status LEDs.
Reference Manual for the Model DG632 ADSL Modem Router Table 2-1. LED Descriptions USB On Off The Local port has detected link with a device. No link is detected on this port. Ethernet On (Green) Blink (Green) On (Amber) Blink (Amber) Off The Local port has detected link with a 100 Mbps device. Data is being transmitted or received at 100 Mbps. The Local port has detected link with a 10 Mbps device. Data is being transmitted or received at 10 Mbps. No link is detected on this port.
Reference Manual for the Model DG632 ADSL Modem Router 2-8 Introduction
Chapter 3 Connecting the Modem to the Internet This chapter describes how to set up the modem on your Local Area Network (LAN) and connect to the Internet. It describes how to configure your DG632 ADSL Modem Router for Internet access using the Setup Wizard, or how to manually configure your Internet connection. What You Need Before You Begin You need to prepare these three things before you can establish an Internet connection through your modem: 1.
Reference Manual for the Model DG632 ADSL Modem Router Note: Do not connect the DG632 to the ADSL line through a microfilter unless the microfilter is a combination microfilter/splitter specifically designed for this purpose. Doing so will prevent the built-in ADSL modem in the DG632 from establishing a connection to the Internet. If you have any doubts about this, connect the DG632 directly to the ADSL line.
Reference Manual for the Model DG632 ADSL Modem Router Internet Configuration Requirements Depending on how your ISP set up your Internet account, you need one or more of these configuration parameters to connect your modem to the Internet: • Virtual Path Identifier (VPI)/Virtual Channel Indentifier (VCI) parameters • Multiplexing Method • Host and Domain Names • ISP Login Name and Password • ISP Domain Name Server (DNS) Addresses • Fixed or Static IP Address Where Do I Get the Internet Configu
Reference Manual for the Model DG632 ADSL Modem Router Record Your Internet Connection Information Print this page. Fill in the configuration parameters from your Internet Service Provider (ISP). ISP Multiplexing Method and Virtual Circuit Number: The default settings of your DG632 ADSL Modem Router will work fine for most ISPs. However, some ISPs use a specific Multiplexing Method or a Virtual Circuit Number for either the Virtual Path Identifier (VPI) or Virtual Channel Identifier (VCI).
Reference Manual for the Model DG632 ADSL Modem Router Connecting the DG632 to Your Network This section provides instructions for connecting the DG632 modem router to your network. Note: The Resource CD included with your modem contains an animated Installation Assistant to help you through this procedure. How to Connect the Modem There are three steps to connecting your firewall: 1. Connect the modem to your ADSL line. 2. Connect the modem to the computers on your network. 3. Log in to the modem.
Reference Manual for the Model DG632 ADSL Modem Router b. Two-Line Filter Example. Insert the two-line filter into the phone outlet and connect the phone to the phone line connector (A). 3KRQH $3, ,INE A Phone Line Figure 3-4: Connecting an ADSL microfilter and phone Note: To use a one-line filter with a separate splitter, insert the splitter into the phone outlet, connect the one-line filter to the splitter, and connect the phone to the filter. 2. CONNECT THE DG632 TO THE INTERNET.
Reference Manual for the Model DG632 ADSL Modem Router c. Connect the Ethernet cable (C) from your DG632’s LAN port to the Ethernet adapter in your computer. Note: To connect the computer using the USB port, please see “Connecting Your Computer to the DG632 USB Port Option” on page 3-12. C 0HONE $3, ,INE Figure 3-6: Connecting a computer to the DG632 modem router Note: The DG632 modem router incorporates Auto UplinkTM technology.
Reference Manual for the Model DG632 ADSL Modem Router The ADSL link light is solid green, indicating a link has been established to the ADSL network. e. Now, turn on your computer. If software usually logs you in to your Internet connection, do not run that software or cancel it if it starts automatically. or 3. The Ethernet or USB light is lit for the connected computer. LOG IN TO THE DG632. Note: Your computer needs to be configured for DHCP.
Reference Manual for the Model DG632 ADSL Modem Router 4. CONNECT TO THE INTERNET The modem is now properly attached to your network. You are now ready to configure your modem to connect to the Internet. There are two ways you can configure your modem to connect to the Internet: a. Let the DG632 auto-detect the type of Internet connection you have and configure it. b. Manually choose which type of Internet connection you have and configure it. These options are described below.
Reference Manual for the Model DG632 ADSL Modem Router • Dynamic IP assignment • A login protocol such as PPPoE or PPPoA Next, the Setup Wizard will report which connection type it has discovered, and then display the appropriate configuration page. If the Setup Wizard finds no connection, you will be prompted to check the physical connection between your modem and the ADSL line. When the connection is properly made, the modem’s Internet LED should be on. 5.
Reference Manual for the Model DG632 ADSL Modem Router Wizard-Detected PPPoA Login Account Setup If the Setup Wizard determines that your Internet service account uses a login protocol such as PPP over ATM (PPPoA), you will be directed to the PPPoA page shown in Figure 3-10 below: Figure 3-11: Setup Wizard menu for PPPoA login accounts Enter your login user name and password. These fields are case sensitive.
Reference Manual for the Model DG632 ADSL Modem Router Testing Your Internet Connection After completing the Internet connection configuration, your can test your Internet connection. Log in to the modem, then, from the Basic Settings link in the Setup menu, click the Test button. If the NETGEAR Web site does not appear within one minute, refer to Chapter 7, “Troubleshooting”. Your modem is now configured to provide Internet access for your network.
Reference Manual for the Model DG632 ADSL Modem Router 3. Click Ok to run the software installation utility. 4. Click Next and follow the prompts to complete the installation of the USB driver. 5. Now, connect the USB cable to your modem and plug in the AC power for the modem. 6. Use the USB cable to connect your computer to the modem. The found new hardware Windows installation wizard will prompt you to complete the installation and inform you when the PC is ready to use the USB connection.
Reference Manual for the Model DG632 ADSL Modem Router 3-14 Connecting the Modem to the Internet
Chapter 4 Maintaining Your DG632 ADSL Modem Router This chapter describes how to perform maintenance tasks with your DG632 ADSL Modem Router. Changing the Mode of Operation The DG632 ADSL Modem Router can operate in the following modes: • Modem: In modem mode, you can connect a single computer to the Internet. • Router: In router mode, you can connect more than one computer to the Internet and take advantage of advanced management and security features.
Reference Manual for the Model DG632 ADSL Modem Router 1. Turn on the modem and wait at least ten seconds for initialization to complete. 2. Reboot your computer to obtain DHCP configuration from the modem. 3. Launch your web browser, and click your browser’s Stop button. 4. In the Address or Location box of your browser, type http://192.168.0.1 and click Enter. A login window opens as shown in Figure 4-1 below:. Figure 4-1. Modem Login window 5.
Reference Manual for the Model DG632 ADSL Modem Router After changing the mode, the main menu changes, showing the features of the mode selected. Modem Mode Menu Router Mode Menu Figure 4-3. Device Mode main menu options Changing the Password of Your DG632 ADSL Modem Router For security reasons, the modem has its own user name and password. Also, after a period of inactivity for a set length of time, the administrator login will automatically disconnect.
Reference Manual for the Model DG632 ADSL Modem Router How to Change the Built-In Password 1. Log in to the modem at its default LAN address of http://192.168.0.1 with its default User Name of admin, default password of password, or using whatever Password and LAN address you have chosen for the modem. Figure 4-4: Log in to the modem 2. From the Main Menu of the browser interface, under the Maintenance heading, select Set Password to bring up the menu shown in Figure 4-5.
Reference Manual for the Model DG632 ADSL Modem Router 2. Click Apply to save your changes or click Cancel to keep the current period. Backing Up, Restoring, or Erasing Your Settings The configuration settings of the DG632 modem router are stored in a configuration file in the modem. This file can be backed up to your computer, restored, or reverted to factory default settings. The procedures below explain how to do these tasks. How to Back Up the Configuration to a File 1.
Reference Manual for the Model DG632 ADSL Modem Router How to Restore the Configuration from a File 1. Log in to the modem at its default LAN address of http://192.168.0.1 with its default User Name of admin, default password of password, or using whatever User Name, Password and LAN address you have chosen for the modem. 2. From the Maintenance heading of the Main Menu, select the Settings Backup menu as seen in Figure 4-6. 3.
Reference Manual for the Model DG632 ADSL Modem Router How to Upgrade the Modem Firmware Note: NETGEAR recommends that you back up your configuration before doing a firmware upgrade. After the upgrade is complete, you may need to restore your configuration settings. 1. Download and unzip the new software file from NETGEAR. The Web browser used to upload new firmware into the modem must support HTTP uploads. NETGEAR recommends using Microsoft Internet Explorer 5.0 or above, or Netscape Navigator 4.
Reference Manual for the Model DG632 ADSL Modem Router 4-8 Maintaining Your DG632 ADSL Modem Router
Chapter 5 Using Modem Mode This chapter describes how to use the modem features of the DG632 ADSL Modem Router. Figure 5-1: Modem Mode main menu Modem Mode Basic Settings You can manually configure your modem using the menu above, or you can allow the Setup Wizard to determine your configuration as described in the previous section. Manually Configuring Basic Settings It is best to start the manual configuration from the Setup Wizard: 1. Select your country. 2.
Reference Manual for the Model DG632 ADSL Modem Router 5. 6. Follow the instructions below according to the encapsulation method and whether your Internet connection requires a login. The following methods are available: • Internet Connection Requires Login and Uses PPPoE • Internet Connection Requires Login and Uses PPPoA • Internet Connection Does Not Require a Login Usually the default ADSL Settings work fine for most ISPs and you can skip this step.
Reference Manual for the Model DG632 ADSL Modem Router Note: You will no longer need to launch the ISP’s login program on your computer in order to access the Internet. When you start an Internet application, your modem automatically logs you in. 2. Choose PPPoA for the encapsulation method your ISP uses. 3. Enter the login name (frequently the email address your ISP provided), and password. 4. If you want to change the login timeout, enter a new value in minutes.
Reference Manual for the Model DG632 ADSL Modem Router • Select “Get Dynamically from ISP” if your ISP uses DHCP to assign your IP address. Your ISP will automatically assign this address. • If you know that your ISP does not automatically transmit DNS addresses to the modem during login, select “Use these DNS servers” and enter the IP address of your ISP’s Primary DNS Server. If a Secondary DNS Server address is available, enter it also.
Reference Manual for the Model DG632 ADSL Modem Router Viewing Modem Status and Usage Statistics From the Main Menu, under Maintenance, select Modem Status to view the screen in Figure 5-2. Figure 5-2: Modem Status screen The Modem Status menu provides status and usage information, as described in the following table. Table 5-1. Menu 3.2 - Modem Status Fields Field Description Account Name The Host Name assigned to the modem in the Basic Settings menu.
Reference Manual for the Model DG632 ADSL Modem Router Table 5-1. Menu 3.2 - Modem Status Fields Field Description DHCP If None, the modem will use a fixed IP address on the ADSL. If Client, the modem will obtain an IP address dynamically from the ISP IP Subnet Mask Displays the IP Subnet Mask being used by the Internet (ADSL) port of the modem. Domain Name Server (DNS) Displays the DNS Server IP addresses being used by the modem. These addresses are usually obtained dynamically from the ISP.
Reference Manual for the Model DG632 ADSL Modem Router Click the Show Statistics button to display modem usage statistics, as shown in Figure 5-2 below: Figure 5-3: Modem Statistics screen This screen shows the following statistics:. Table 5-1. Statistics Fields Field Description WAN, LAN, or Serial Port The statistics for the WAN (Internet), LAN (local), and Serial ports. For each port, the screen displays: Status The link status of the port.
Reference Manual for the Model DG632 ADSL Modem Router 5-8 Using Modem Mode
Chapter 6 Using Router Mode This chapter describes how to use the basic router features of the DG632 ADSL Modem Router. Figure 6-1: Router Mode main menu Router Mode Basic Settings You can manually configure your modem using the menu above, or you can allow the Setup Wizard to determine your configuration as described in the previous section.
Reference Manual for the Model DG632 ADSL Modem Router ISP Does Not Require Login ISP Does Require Login Figure 6-2: Basic Settings menu Manually Configuring Basic Settings It is best to start the manual configuration from the Setup Wizard: 1. Select your country. 2. Select No to manually configure your modem connection. 3. Click Next. 4. Manually configure the modem in the Basic Settings menu shown in Figure 6-2.
Reference Manual for the Model DG632 ADSL Modem Router 5. 6. Follow the instructions below according to the encapsulation method and whether your Internet connection requires a login. The following methods are available: • Internet Connection Requires Login and Uses PPPoE • Internet Connection Requires Login and Uses PPPoA • Internet Connection Does Not Require a Login Usually the default ADSL Settings work fine for most ISPs and you can skip this step.
Reference Manual for the Model DG632 ADSL Modem Router Note: You will no longer need to launch the ISP’s login program on your computer in order to access the Internet. When you start an Internet application, your modem automatically logs you in. 2. Choose PPPoA for the encapsulation method your ISP uses. 3. Enter the login name (frequently the email address your ISP provided), and password. 4. If you want to change the login timeout, enter a new value in minutes.
Reference Manual for the Model DG632 ADSL Modem Router • Select “Get Dynamically from ISP” if your ISP uses DHCP to assign your IP address. Your ISP will automatically assign this address. • If you know that your ISP does not automatically transmit DNS addresses to the modem during login, select “Use these DNS servers” and enter the IP address of your ISP’s Primary DNS Server. If a Secondary DNS Server address is available, enter it also.
Reference Manual for the Model DG632 ADSL Modem Router Viewing Router Status and Usage Statistics From the Main Menu, under Maintenance, select Router Status to view the screen in Figure 6-3. Figure 6-3: Router Status screen The Router Status menu provides status and usage information, as described in the following table. Table 6-1. Menu 3.2 - Modem Status Fields Field Description Account Name The Host Name assigned to the modem in the Basic Settings menu.
Reference Manual for the Model DG632 ADSL Modem Router Table 6-1. Menu 3.2 - Modem Status Fields Field Description DHCP If None, the modem will use a fixed IP address on the ADSL. If Client, the modem will obtain an IP address dynamically from the ISP IP Subnet Mask Displays the IP Subnet Mask being used by the Internet (ADSL) port of the modem. Domain Name Server (DNS) Displays the DNS Server IP addresses being used by the modem. These addresses are usually obtained dynamically from the ISP.
Reference Manual for the Model DG632 ADSL Modem Router Click the Show Statistics button to display modem usage statistics, as shown in Figure 6-3 below: Figure 6-4: Router Statistics screen This screen shows the following statistics:. Table 6-1. Statistics Fields Field Description WAN, LAN, or Serial Port The statistics for the WAN (Internet), LAN (local), and Serial ports. For each port, the screen displays: Status The link status of the port.
Reference Manual for the Model DG632 ADSL Modem Router Click the Connection Status button to display router connection status, as shown in Figure 6-5 and Figure 6-6. Figure 6-5: Connection Status screen for Dynamic IP Clicking the Renew button updates the status information. This screen shows the following statistics: Table 6-1. Connection Status Fields for Dynamic IP Field Description IP Address The IP Address assigned to the WAN port by the ADSL Internet Service Provider.
Reference Manual for the Model DG632 ADSL Modem Router An alternate view of the Connection Status screen is shown in Figure 6-6 below: Figure 6-6: Connection Status screen for PPPoA Clicking the Renew button updates the status information. This screen shows the following statistics: Table 6-1. Connection Status Fields for PPPoA Field Description Connection Time The time elapsed since the last connection to the Internet via the ADSL port.
Reference Manual for the Model DG632 ADSL Modem Router Viewing, Selecting, and Saving Router Mode Logged Information The modem will log security-related events such as denied incoming service requests, hacker probes, and administrator logins. Here is an example of the logs file.
Reference Manual for the Model DG632 ADSL Modem Router Log entries are described in Table 6-1 below: Table 6-1. Security Log entry descriptions Field Description Description or Action The type of event and what action was taken if any. Source IP The IP address of the initiating device for this log entry. Source port and interface The service port number of the initiating device, and whether it originated from the LAN or WAN Destination The name or IP address of the destination device or Web site.
Reference Manual for the Model DG632 ADSL Modem Router Router Mode Diagnostic Utilities and Rebooting The DG632 modem router has a diagnostics feature. You can use the diagnostics menu to perform the following functions from the modem: • Ping an IP Address to test connectivity to see if you can reach a remote host. • Perform a DNS Lookup to test if an Internet name resolves to an IP address to verify that the DNS server configuration is working.
Reference Manual for the Model DG632 ADSL Modem Router Firewall Services Services are functions performed by server computers at the request of client computers. For example, Web servers serve Web pages, time servers serve time and date information, and game hosts serve data about other players’ moves. When a computer on the Internet sends a request for service to a server computer, the requested service is identified by a service or port number.
Reference Manual for the Model DG632 ADSL Modem Router • 3. To delete an existing Service, select its button on the left side of the table and click Delete Service. Use the page shown below to define or edit a service. Figure 6-10: Add Services menu 4. Click Apply to save your changes. Firewall Rules Firewall rules are used to block or allow specific traffic passing through from one side to the other.
Reference Manual for the Model DG632 ADSL Modem Router Figure 6-11: Rules menu • • To edit an existing rule, select its button on the left side of the table and click Edit. To delete an existing rule, select its button on the left side of the table and click Delete. Inbound Rules (Port Forwarding) Because the DG632 uses Network Address Translation (NAT), your network presents only one IP address to the Internet, and outside users cannot directly address any of your local computers.
Reference Manual for the Model DG632 ADSL Modem Router Inbound Rule Example: A Local Public Web Server If you host a public Web server on your local network, you can define a rule to allow inbound Web (HTTP) requests to the IP address of your Web server. This rule is shown in Figure 6-12: Figure 6-12: Rule example: A Local Public Web Server The parameters are: 1. LAN Server IP Address Enter the IP address of the computer or server on your LAN which will receive the inbound traffic covered by this rule.
Reference Manual for the Model DG632 ADSL Modem Router • Local computers must access the local server using the computer’s local LAN address (192.168.0.11 in the example in Figure 6-12 above). Attempts by local computers to access the server using the external WAN IP address will fail. Outbound Rules (Service Blocking) The DG632 allows you to block the use of certain Internet services by computers on your network. This is called service blocking or port filtering.
Reference Manual for the Model DG632 ADSL Modem Router 4. Click Apply.
Reference Manual for the Model DG632 ADSL Modem Router How to Configure a Default DMZ Server To assign a computer or server to be a Default DMZ server, follow these steps: 1. Log in to the modem at its default LAN address of http://192.168.0.1 with its default User Name of admin, default password of password, or using whatever Password and LAN address you have chosen for the modem. 2.
Reference Manual for the Model DG632 ADSL Modem Router Disable Port Scan and DOS Protection The Firewall protects your LAN against Port Scans and Denial of Service (DOS) attacks. This should be disabled only in special circumstances. Respond to Ping on Internet WAN Port If you want the modem to respond to a 'ping' from the Internet, select the ‘Respond to Ping on Internet WAN Port’ check box. This should only be used as a diagnostic tool, since it allows your modem to be discovered.
Reference Manual for the Model DG632 ADSL Modem Router These addresses are part of the Internet Engineering Task Force (IETF)-designated private address range for use in private networks, and should be suitable in most applications. If your network has a requirement to use a different IP addressing scheme, you can make those changes in this menu. Figure 6-15: LAN IP Setup Menu The LAN TCP/IP Setup parameters are: • IP Address This is the LAN IP address of the modem.
Reference Manual for the Model DG632 ADSL Modem Router • RIP Version This controls the format and the broadcasting method of the RIP packets that the modem sends. It recognizes both formats when receiving. By default, this is set for RIP-1. — RIP-1 is universally supported. RIP-1 is probably adequate for most networks, unless you have an unusual network setup. — RIP-2 carries more information. Both RIP-2B and RIP-2M send the routing data in RIP-2 format. — RIP-2B uses subnet broadcasting.
Reference Manual for the Model DG632 ADSL Modem Router • An IP Address from the range you have defined • Subnet Mask • Gateway IP Address is the router’s LAN IP address • Primary DNS Server, if you entered a Primary DNS address in the Basic Settings menu; otherwise, the router’s LAN IP address • Secondary DNS Server, if you entered a Secondary DNS address in the Basic Settings menu Address Reservation When you specify a reserved IP address for a computer on the LAN, that computer will always rece
Reference Manual for the Model DG632 ADSL Modem Router 2. From the Main Menu, under Advanced, click the LAN IP Setup link to view the menu, shown in Figure 6-15. 3. Enter the TCP/IP parameters. 4. Click Apply to save your changes. Using Static Routes Static Routes provide additional routing information to your router. Under normal circumstances, the router has adequate routing information after it has been configured for Internet access, and you do not need to configure additional static routes.
Reference Manual for the Model DG632 ADSL Modem Router • A Metric value of 1 will work since the ISDN router is on the LAN. This represents the number of routers between your network and the destination. This is a direct connection so it is set to 1. • Private is selected only as a precautionary security measure in case RIP is activated. How to Configure Static Routes 1. Log in to the router at its default LAN address of http://192.168.0.
Reference Manual for the Model DG632 ADSL Modem Router 4. b. Type a route name for this static route in the Route Name box under the table. This is for identification purpose only. c. Type the Destination IP Address of the final destination. d. Type the IP Subnet Mask for this destination. If the destination is a single host, type 255.255.255.255. e. Type the Gateway IP Address, which must be a router on the same LAN segment as the router. f. Type a number between 2 and 15 as the Metric value.
Reference Manual for the Model DG632 ADSL Modem Router 6-28 Using Router Mode
Chapter 7 Troubleshooting This chapter gives information about troubleshooting your DG632 ADSL Modem Router. After each problem description, instructions are provided to help you diagnose and solve the problem. For the common problems listed, go to the section indicated. • Is the router on? • Have I connected the router correctly? Go to “Basic Functioning” on page 7-1. • I can’t access the router’s configuration with my browser. Go to “Troubleshooting the Web Configuration Interface” on page 7-2.
Reference Manual for the Model DG632 ADSL Modem Router If a port’s LED is lit, a link has been established to the connected device. If a LAN port is connected to a 100 Mbps device, verify that the port’s LED is green. If the port is 10 Mbps, the LED will be amber. If any of these conditions does not occur, refer to the appropriate following section.
Reference Manual for the Model DG632 ADSL Modem Router • Make sure your computer’s IP address is on the same subnet as the router. If you are using the recommended addressing scheme, your computer’s address should be in the range of 192.168.0.2 to 192.168.0.254. Refer to “Verifying TCP/IP Properties” on page C-6 or “Verifying TCP/IP Properties for Macintosh Computers” on page C-17 to find your computer’s IP address. Follow the instructions in Appendix C to configure your computer.
Reference Manual for the Model DG632 ADSL Modem Router WAN LED Green or Blinking Green If your WAN LED is green or blinking green, then you have a good ADSL connection. You can be confident that the service provider has connected your line correctly and that your wiring is correct. WAN LED Blinking Yellow If your WAN LED is blinking yellow, then your modem is attempting to make an ADSL connection with the service provider. The LED should turn green within several minutes.
Reference Manual for the Model DG632 ADSL Modem Router To check the WAN IP address from the browser interface: 1. Launch your browser and select an external site such as www.netgear.com. 2. Access the Main Menu of the modem’s configuration at http://192.168.0.1. 3. Under the Maintenance heading check that an IP address is shown for the WAN Port. If 0.0.0.0 is shown, your modem has not obtained an IP address from your ISP.
Reference Manual for the Model DG632 ADSL Modem Router If you cannot connect after several minutes, you may be using an incorrect Service Name, User Name or Password. There also may be a provisioning problem with your ISP. Note: Unless you connect manually, the modem will not authenticate using PPPoE or PPPoA until data is transmitted to the network.
Reference Manual for the Model DG632 ADSL Modem Router 2. In the field provided, type Ping followed by the IP address of the router, as in this example: ping 192.168.0.1 3. Click OK.
Reference Manual for the Model DG632 ADSL Modem Router — Check that your PC has the IP address of your router listed as the default modem. If the IP configuration of your PC is assigned by DHCP, this information will not be visible in your PC’s Network Control Panel. Verify that the IP address of the router is listed as the default modem as described in “Verifying TCP/IP Properties” on page C-6.
Appendix A Technical Specifications This appendix provides technical specifications for the DG632 ADSL Modem Router.
Reference Manual for the Model DG632 ADSL Modem Router LAN: 10BASE-T or 100BASE-Tx, RJ-45 USB 1.1 WAN: A-2 ADSL, RJ-11, pins 2 and 3 T1.413, G.DMT, G.
Appendix B Network and Routing Basics This chapter provides an overview of IP networks and routing. Related Publications As you read this document, you may be directed to various RFC documents for further information. An RFC is a Request For Comment (RFC) published by the Internet Engineering Task Force (IETF), an open organization that defines the architecture and operation of the Internet. The RFC documents outline and define the standard protocols and procedures for the Internet.
Reference Manual for the Model DG632 ADSL Modem Router What is a Router? A router is a device that forwards traffic between networks based on network layer information in the data and on routing tables maintained by the router. In these routing tables, a router builds up a logical picture of the overall network by gathering and exchanging information with other routers in the network. Using this information, the router chooses the best path for forwarding network traffic.
Reference Manual for the Model DG632 ADSL Modem Router The latter version is easier to remember and easier to enter into your computer. In addition, the 32 bits of the address are subdivided into two parts. The first part of the address identifies the network, and the second part identifies the host node or station on the network. The dividing point may vary depending on the address range and the application. There are five standard classes of IP addresses.
Reference Manual for the Model DG632 ADSL Modem Router • Class C Class C addresses can have 254 hosts on a network. Class C addresses use 24 bits for the network address and eight bits for the node. They are in this range: 192.0.1.x to 223.255.254.x. • Class D Class D addresses are used for multicasts (messages sent to many hosts). Class D addresses are in this range: 224.0.0.0 to 239.255.255.255. • Class E Class E addresses are for experimental use.
Reference Manual for the Model DG632 ADSL Modem Router As a shorter alternative to dotted-decimal notation, the netmask may also be expressed in terms of the number of ones from the left. This number is appended to the IP address, following a backward slash (/), as “/n.” In the example, the address could be written as 192.168.170.237/24, indicating that the netmask is 24 ones followed by 8 zeros.
Reference Manual for the Model DG632 ADSL Modem Router Although the preceding example uses the entire third octet for a subnet address, note that you are not restricted to octet boundaries in subnetting. To create more network numbers, you need only shift some bits from the host address to the network address. For instance, to partition a Class C network number (192.68.135.0) into two, you shift one bit from the host address to the network address. The new netmask (or subnet mask) is 255.255.255.128.
Reference Manual for the Model DG632 ADSL Modem Router Table 7-2. Netmask Formats 255.255.255.0 /24 255.255.255.128 /25 255.255.255.192 /26 255.255.255.224 /27 255.255.255.240 /28 255.255.255.248 /29 255.255.255.252 /30 255.255.255.254 /31 255.255.255.
Reference Manual for the Model DG632 ADSL Modem Router Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines explained here. For more information about address assignment, refer to RFC 1597, Address Allocation for Private Internets, and RFC 1466, Guidelines for Management of IP Address Space. The Internet Engineering Task Force (IETF) publishes RFCs on its Web site at www.ietf.org.
Reference Manual for the Model DG632 ADSL Modem Router This scheme offers the additional benefit of firewall-like protection because the internal LAN addresses are not available to the Internet through the translated connection. All incoming inquiries are filtered out by the router. This filtering can prevent intruders from probing your system. However, using port forwarding, you can allow one PC (for example, a Web server) on your local network to be accessible to outside users.
Reference Manual for the Model DG632 ADSL Modem Router Domain Name Server Many of the resources on the Internet can be addressed by simple descriptive names such as www.NETGEAR.com. This addressing is very helpful at the application level, but the descriptive name must be translated to an IP address in order for a user to actually contact the resource.
Reference Manual for the Model DG632 ADSL Modem Router What is a Firewall? A firewall is a device that protects one network from another, while allowing communication between the two. A firewall incorporates the functions of the NAT router, while adding features for dealing with a hacker intrusion or attack. Several known types of intrusion or attack can be recognized when they occur.
Reference Manual for the Model DG632 ADSL Modem Router . Table B-1. UTP Ethernet cable wiring, straight-through Pin Wire color Signal 1 Orange/White Transmit (Tx) + 2 Orange Transmit (Tx) - 3 Green/White Receive (Rx) + 4 Blue 5 Blue/White 6 Green 7 Brown/White 8 Brown Receive (Rx) - Category 5 Cable Quality Category 5 distributed cable that meets ANSI/EIA/TIA-568-A building wiring standards can be a maximum of 328 feet (ft.) or 100 meters (m) in length, divided as follows: 20 ft.
Reference Manual for the Model DG632 ADSL Modem Router Inside Twisted Pair Cables For two devices to communicate, the transmitter of each device must be connected to the receiver of the other device. The crossover function is usually implemented internally as part of the circuitry in the device. Computers and workstation adapter cards are usually media-dependent interface ports, called MDI or uplink ports.
Reference Manual for the Model DG632 ADSL Modem Router Figure B-3: Category 5 UTP Cable with Male RJ-45 Plug at Each End Note: Flat “silver satin” telephone cable may have the same RJ-45 plug. However, using telephone cable results in excessive collisions, causing the attached port to be partitioned or disconnected from the network.
Reference Manual for the Model DG632 ADSL Modem Router The DG632 modem router incorporates Auto UplinkTM technology (also called MDI/MDIX). Each LOCAL Ethernet port will automatically sense whether the Ethernet cable plugged into the port should have a normal connection (e.g. connecting to a PC) or an uplink connection (e.g. connecting to a router, switch, or hub). That port will then configure itself to the correct configuration.
Reference Manual for the Model DG632 ADSL Modem Router B-16 Network and Routing Basics
Appendix C Preparing Your Network This appendix describes how to prepare your network to connect to the Internet through the DG632 ADSL Modem Router and how to verify the readiness of broadband Internet service from an Internet service provider (ISP).
Reference Manual for the Model DG632 ADSL Modem Router In your IP network, each PC and the router must be assigned a unique IP addresses. Each PC must also have certain other IP configuration information such as a subnet mask (netmask), a domain name server (DNS) address, and a default gateway address. In most cases, you should install TCP/ IP so that the PC obtains its specific network configuration information automatically from a DHCP server during bootup.
Reference Manual for the Model DG632 ADSL Modem Router You must have an Ethernet adapter, the TCP/IP protocol, and Client for Microsoft Networks. Note: It is not necessary to remove any other network components shown in the Network window in order to install the adapter, TCP/IP, or Client for Microsoft Networks. If you need to install a new adapter, follow these steps: a. Click the Add button. b. Select Adapter, and then click Add. c.
Reference Manual for the Model DG632 ADSL Modem Router If you need Client for Microsoft Networks: 3. a. Click the Add button. b. Select Client, and then click Add. c. Select Microsoft. d. Select Client for Microsoft Networks, and then click OK. Restart your PC for the changes to take effect.
Reference Manual for the Model DG632 ADSL Modem Router Verify the following settings as shown: • Client for Microsoft Network exists • Ethernet adapter is present • TCP/IP is present • Primary Network Logon is set to Windows logon Click on the Properties button. The following TCP/IP Properties window will display.
Reference Manual for the Model DG632 ADSL Modem Router • By default, the IP Address tab is open on this window. • Verify the following: Obtain an IP address automatically is selected. If not selected, click in the radio button to the left of it to select it. This setting is required to enable the DHCP server to automatically assign an IP address. • Click OK to continue. Restart the PC. Repeat these steps for each PC with this version of Windows on your network.
Reference Manual for the Model DG632 ADSL Modem Router 2. Type winipcfg, and then click OK. The IP Configuration window opens, which lists (among other things), your IP address, subnet mask, and default gateway. 3. From the drop-down box, select your Ethernet adapter. The window is updated to show your settings, which should match the values below if you are using the default TCP/IP settings that NETGEAR recommends for connecting through a router or gateway: • The IP address is between 192.168.0.
Reference Manual for the Model DG632 ADSL Modem Router DHCP Configuration of TCP/IP in Windows XP, 2000, or NT4 You will find there are many similarities in the procedures for different Windows systems when using DHCP to configure TCP/IP. The following steps will walk you through the configuration process for each of these versions of Windows. DHCP Configuration of TCP/IP in Windows XP Locate your Network Neighborhood icon. • Select Control Panel from the Windows XP new Start Menu.
Reference Manual for the Model DG632 ADSL Modem Router • Now you should be at the Local Area Network Connection Status window. This box displays the connection status, duration, speed, and activity statistics. • Administrator logon access rights are needed to use this window. • Click the Properties button to view details about the connection. • The TCP/IP details are presented on the Support tab page. • Select Internet Protocol, and click Properties to view the configuration information.
Reference Manual for the Model DG632 ADSL Modem Router • Verify that the Obtain an IP address automatically radio button is selected. • Verify that Obtain DNS server address automatically radio button is selected. • Click the OK button. This completes the DHCP configuration of TCP/ IP in Windows XP. Repeat these steps for each PC with this version of Windows on your network.
Reference Manual for the Model DG632 ADSL Modem Router • Click on the My Network Places icon on the Windows desktop. This will bring up a window called Network and Dial-up Connections. • Right click on Local Area Connection and select Properties. • The Local Area Connection Properties dialog box appears. • Verify that you have the correct Ethernet card selected in the Connect using: box.
Reference Manual for the Model DG632 ADSL Modem Router • With Internet Protocol (TCP/IP) selected, click on Properties to open the Internet Protocol (TCP/IP) Properties dialogue box. • Verify that • Obtain an IP address automatically is selected. • Obtain DNS server address automatically is selected. • Click OK to return to Local Area Connection Properties. • Click OK again to complete the configuration process for Windows 2000. Restart the PC.
Reference Manual for the Model DG632 ADSL Modem Router DHCP Configuration of TCP/IP in Windows NT4 Once you have installed the network card, you need to configure the TCP/IP environment for Windows NT 4.0. Follow this procedure to configure TCP/IP with DHCP in Windows NT 4.0. • Choose Settings from the Start Menu, and then select Control Panel. This will display Control Panel window. • Double-click the Network icon in the Control Panel window. The Network panel will display.
Reference Manual for the Model DG632 ADSL Modem Router • Highlight the TCP/IP Protocol in the Network Protocols box, and click on the Properties button.
Reference Manual for the Model DG632 ADSL Modem Router • The TCP/IP Properties dialog box now displays. • Click the IP Address tab. • Select the radio button marked Obtain an IP address from a DHCP server. • Click OK. This completes the configuration of TCP/IP in Windows NT. Restart the PC. Repeat these steps for each PC with this version of Windows on your network. Verifying TCP/IP Properties for Windows XP, 2000, and NT4 To check your PC’s TCP/IP configuration: 1.
Reference Manual for the Model DG632 ADSL Modem Router • 4. The default gateway is 192.168.0.1 Type exit Configuring the Macintosh for TCP/IP Networking Beginning with Macintosh Operating System 7, TCP/IP is already installed on the Macintosh. On each networked Macintosh, you need to configure TCP/IP to use DHCP. MacOS 8.6 or 9.x 1. From the Apple menu, select Control Panels, then TCP/IP. The TCP/IP Control Panel opens: 2. From the “Connect via” box, select your Macintosh’s Ethernet interface. 3.
Reference Manual for the Model DG632 ADSL Modem Router 2. If not already selected, select Built-in Ethernet in the Configure list. 3. If not already selected, Select Using DHCP in the TCP/IP tab. 4. Click Save. Verifying TCP/IP Properties for Macintosh Computers After your Macintosh is configured and has rebooted, you can check the TCP/IP configuration by returning to the TCP/IP Control Panel. From the Apple menu, select Control Panels, then TCP/IP.
Reference Manual for the Model DG632 ADSL Modem Router Verifying the Readiness of Your Internet Account For broadband access to the Internet, you need to contract with an Internet service provider (ISP) for a single-user Internet access account using a cable modem or DSL modem. This modem must be a separate physical box (not a card) and must provide an Ethernet port intended for connection to a Network Interface Card (NIC) in a computer. Your router does not support a USB-connected broadband modem.
Reference Manual for the Model DG632 ADSL Modem Router • An IP address and subnet mask • A gateway IP address, which is the address of the ISP’s router • One or more domain name server (DNS) IP addresses • Host name and domain suffix For example, your account’s full server names may look like this: mail.xxx.yyy.com In this example, the domain suffix is xxx.yyy.com. If any of these items are dynamically supplied by the ISP, your router automatically acquires them.
Reference Manual for the Model DG632 ADSL Modem Router If an IP address appears under Installed Gateways, write down the address. This is the ISP’s gateway address. Select the address and then click Remove to remove the gateway address. 6. Select the DNS Configuration tab. If any DNS server addresses are shown, write down the addresses. If any information appears in the Host or Domain information box, write it down. Click Disable DNS. 7.
Reference Manual for the Model DG632 ADSL Modem Router Restarting the Network Once you have set up your computers to work with the router, you must reset the network for the devices to be able to communicate correctly. Restart any computer that is connected to the firewall. After configuring all of your computers for TCP/IP networking and restarting them, and connecting them to the local network of your DG632 modem router, you are ready to access and configure the router.
Reference Manual for the Model DG632 ADSL Modem Router C-22 Preparing Your Network
Glossary 10BASE-T IEEE 802.3 specification for 10 Mbps Ethernet over twisted pair wiring. 100BASE-Tx IEEE 802.3 specification for 100 Mbps Ethernet over twisted pair wiring. ADSL See Asymmetric Digital Subscriber Line Asymmetric Digital Subscriber Line A technology for sending data over regular telephone lines. ADSL allows data rates up to 8 Mbps downstream and 640 Kbps upstream. Denial of Service attack DoS.
Reference Manual for the Model DG632 ADSL Modem Router IP Address A four-byte number uniquely defining each host on the Internet. Ranges of addresses are assigned by Internic, an organization formed for this purpose. Usually written in dotted-decimal notation with periods separating the bytes (for example, 134.177.244.57). IPSec Internet Protocol Security. IPSec is a series of guidelines for securing private information transmitted over public networks.
Reference Manual for the Model DG632 ADSL Modem Router Network Address Translation A technique by which several hosts share a single IP address for access to the Internet. packet A block of information sent over a network. A packet typically contains a source and destination network address, some protocol and length information, a block of data, and a checksum. PPP See Point-to-Point Protocol. PPPoA See PPP over ATM PPPoE See PPP over Ethernet PPP over ATM PPPoA.
Reference Manual for the Model DG632 ADSL Modem Router 4 VCI Virtual Channel Identifier. Together with the VPI, defines a Virtual Channel through an ATM network. Used by ATM switching equipment to route data through the network. VPI Virtual Path Identifier. Together with the VCI, defines a Virtual Channel through an ATM network. Used by ATM switching equipment to route data through the network. WAN See wide area network. wide area network WAN.
