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NETGEAR DG632 Reference Manual

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Download this manual See also: Installation Manual
Reference Manual for the
Model DG632 ADSL

Modem Router

NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
Phone 1-888-NETGEAR
April 2004

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Summary of Contents for NETGEAR DG632

  • Page 1: Modem Router

    Reference Manual for the Model DG632 ADSL Modem Router NETGEAR, Inc. 4500 Great America Parkway Santa Clara, CA 95054 USA Phone 1-888-NETGEAR April 2004...
  • Page 2 In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes to the products described in this document without notice. NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit layout(s) described herein.

  • Page 3: Customer Support

    Serie auf die Erfüllung der Vorschriften hin zu überprüfen. Certificate of the Manufacturer/Importer It is hereby certified that the DG632 ADSL Modem Router has been suppressed in accordance with the conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example, test transmitters) in accordance with the regulations may, however, be subject to certain restrictions.

  • Page 5: Table Of Contents

    How to Print this Manual ...1-3 Chapter 2 Introduction About the Modem ...2-1 Key Features ...2-1 Modem or Router Device Mode ...2-2 Modem Device Mode ...2-2 Router Device Mode ...2-2 A Powerful, True Firewall ...2-3 Auto Sensing and Auto Uplink™ LAN Ethernet Connections ...2-3 Easy Installation and Management ...2-4...
  • Page 6 Wizard-Detected PPPoE Login Account Setup ...3-10 Wizard-Detected PPPoA Login Account Setup ... 3-11 Wizard-Detected Dynamic IP Account Setup ... 3-11 Testing Your Internet Connection ...3-12 Connecting Your Computer to the DG632 USB Port Option ...3-12 Chapter 4 Maintaining Your DG632 ADSL Modem Router Changing the Mode of Operation ...4-1...
  • Page 7 ADSL Settings ...6-5 Router Mode Network Management Information ...6-6 Viewing Router Status and Usage Statistics ...6-6 Viewing, Selecting, and Saving Router Mode Logged Information ... 6-11 Selecting What Information to Log ...6-12 Saving Log Files on a Server ...6-12 Router Mode Diagnostic Utilities and Rebooting ...6-13 Firewall Services ...6-14...
  • Page 8 Troubleshooting PPPoE or PPPoA ...7-5 Troubleshooting Internet Browsing ...7-6 Troubleshooting a TCP/IP Network Using the Ping Utility ...7-6 Testing the LAN Path to Your Router ...7-6 Testing the Path from Your Computer to a Remote Device ...7-7 Restoring the Default Configuration and Password ...7-8 Using the Reset button ...7-8...
  • Page 9 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 ...B-11 Category 5 Cable Quality ... B-12 Inside Twisted Pair Cables ... B-13 Uplink Switches, Crossover Cables, and MDI/MDIX Switching ... B-14 Appendix C Preparing Your Network Preparing Your Computers for TCP/IP Networking ...
  • Page 10 Contents...

  • Page 11: About This Manual

    This manual is written according to these specifications. Table 1-1. Manual Specifications Product Version Manual Publication Date Note: Product updates are available on the NETGEAR, Inc. Web site at http://kbserver.netgear.com/products/DG632.asp. About This Manual DG632 ADSL Modem Router. This chapter ®...

  • Page 12: How To Use This Manual

    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. 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.

  • Page 13: How To Print This Manual

    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 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.
  • Page 14 Reference Manual for the Model DG632 ADSL Modem Router About This Manual...

  • Page 15: 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.

  • Page 16: Modem Or Router Device Mode

    These features are discussed below. Modem or Router Device Mode The DG632 modem router can be set to operate in either Modem Device Mode or Router Device Mode. Modem Device Mode When set to operate in Modem Device Mode, your computer must be configured for whatever settings your ISP requires.

  • Page 17: A Powerful, True Firewall

    Auto Sensing and Auto Uplink™ LAN Ethernet Connections The DG632 can connect to either a 10 Mbps standard Ethernet network or a 100 Mbps Fast Ethernet network. The local LAN port is autosensing and capable of full-duplex or half-duplex operation.

  • Page 18: Easy Installation And Management

    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.

  • Page 19: What's In The Box

    The product package should contain the following items. DG632 ADSL Firewall Router Resource CD, installation guide, support information card & warranty/registration card Phone Cable Figure 2-1: DG632 Package contents • DG632 ADSL Modem Router • AC power adapter (varies by region) •...

  • Page 20: The Front Panel

    • 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.

  • Page 21: The Rear Panel

    On (Green) Blink (Green) On (Amber) Blink (Amber) The Rear Panel The rear panel of the DG632 ADSL Modem Router Internet Figure 2-3: DG632 Rear Panel Viewed from left to right, the rear panel contains the following elements: • ADSL port for connecting to an ADSL line •...
  • Page 22 Reference Manual for the Model DG632 ADSL Modem Router Introduction...

  • Page 23: 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.

  • Page 24: Adsl Microfilter With Built-In Splitter

    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.

  • Page 25: Internet Configuration Requirements

    For Macintosh computers, open the TCP/IP or Network control panel. • You can also refer to the ADSL Modem Router Resource CD for the NETGEAR Router ISP Guide which provides Internet connection information for many ISPs. Once you locate your Internet configuration parameters, you may want to record them on the page below according to the instructions in 3-4.

  • Page 26: 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).

  • Page 27: Connecting The Dg632 To Your Network

    Phone Two-Line Filter Phone With Splitter Figure 3-3: ADSL microfilters Note: If you purchased the DG632 in a country where the filter is not included, you must acquire one. Connecting the Modem to the Internet ADSL L TO THE Splitter...
  • Page 28 Note: Improperly connecting a filter to your DG632 modem router will block your ADSL connection. Turn off your computer. Connect the ADSL port of the DG632 to the ADSL port (B) of the two-line filter. ADSL Port Figure 3-5: Connecting DG632 modem router to an ADSL microfilter and phone...
  • Page 29 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 Computer to the DG632 USB Port Option” on page Figure 3-6: Connecting a computer to the DG632 modem router...
  • Page 30 OG IN TO THE Note: Your computer needs to be configured for DHCP. For instructions on configuring for DHCP, please see Appendix C in the Reference Manual on the ADSL Modem Router Resource Connect to the modem by typing Explorer or Netscape...

  • Page 31: Auto-Detecting Your Internet Connection Type

    Internet. There are two ways you can configure your modem to connect to the Internet: Let the DG632 auto-detect the type of Internet connection you have and configure it. Manually choose which type of Internet connection you have and configure it.

  • Page 32: Wizard-Detected Pppoe Login Account Setup

    • 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.

  • Page 33: Wizard-Detected Pppoa Login Account Setup

    Figure 3-12: Setup Wizard menu for Dynamic IP address Click Apply to set Dynamic IP as the connection method. Click the Test button to test your Internet connection. If the NETGEAR Web site does not appear within one minute, refer to...

  • Page 34: Testing Your Internet Connection

    Connecting Your Computer to the DG632 USB Port Option You can connect your PC to the USB 1.1 modem port of the DG632. To connect your computer to the modem via USB involves installing the USB driver: Note: The USB connection option is only available for Windows PCs.
  • Page 35 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. You have now finished connecting your DG632. Connecting the Modem to the Internet...
  • Page 36 Reference Manual for the Model DG632 ADSL Modem Router 3-14 Connecting the Modem to the Internet...

  • Page 37: 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.
  • Page 38 Type admin in the User Name box, password in the Password box, and click OK. When the Basic Settings screen appears click Device Mode to this menu. Figure 4-2. Device Type selection window Select the mode. Click Apply to save your changes. Figure 4-1 below:. Maintaining Your DG632 ADSL Modem Router...

  • Page 39: Changing The Password Of Your Dg632 Adsl Modem Router

    Note: The user name and password are not the same as any user name or password your may use to log in to your Internet connection. NETGEAR recommends that you change this password to a more secure password. The ideal password should contain no dictionary words from any language, and should be a mixture of both upper and lower case letters, numbers, and symbols.

  • Page 40: How To Change The Built-In Password

    For security, the administrator's login to the modem configuration will timeout after a period of inactivity. To change the login timeout period: In the Set Password menu, type a number in ‘Administrator login times out’ field. The suggested default value is 5 minutes. Figure 4-5. Maintaining Your DG632 ADSL Modem Router...

  • Page 41: Backing Up, Restoring, Or Erasing Your Settings

    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.

  • Page 42: How To Restore The Configuration From A File

    2-7. Upgrading the Modem’s Firmware The software of the DG632 modem router is stored in FLASH memory, and can be upgraded as new software is released by NETGEAR. Upgrade files can be downloaded from NETGEAR's Web site. If the upgrade file is compressed (.ZIP file), you must first extract the binary (.BIN or .IMG) file before uploading it to the modem.

  • Page 43: How To Upgrade The Modem Firmware

    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. Download and unzip the new software file from NETGEAR.
  • Page 44 Reference Manual for the Model DG632 ADSL Modem Router Maintaining Your DG632 ADSL Modem Router...

  • Page 45: 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.

  • Page 46: Internet Connection Requires Login And Uses Pppoe

    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.

  • Page 47: Internet Connection Does Not Require A Login

    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. Choose PPPoA for the encapsulation method your ISP uses. Enter the login name (frequently the email address your ISP provided), and password.

  • Page 48: Adsl Settings

    “Troubleshooting. ADSL Settings 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).

  • Page 49: Viewing Modem Status And Usage Statistics

    Viewing Modem Status and Usage Statistics From the Main Menu, under Maintenance, select Modem Status to view the screen in Figure 5-2: Modem Status screen The Modem Status menu provides status and usage information, as described in the following table. Table 5-1.
  • Page 50 MAC Address IP Address DHCP IP Subnet Mask Modem ADSL Firmware Version Router Status Connect Mode Downstream Speed Upstream Speed Description 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 Displays the IP Subnet Mask being used by the Internet (ADSL) port of the modem.
  • Page 51 Click the Show Statistics button to display modem usage statistics, as shown in Figure 5-3: Modem Statistics screen This screen shows the following statistics:. Table 5-1. Statistics Fields Field Description WAN, LAN, or The statistics for the WAN (Internet), LAN (local), and Serial ports. For each port, the Serial Port screen displays: Status...
  • Page 52 Reference Manual for the Model DG632 ADSL Modem Router Using Modem Mode...

  • Page 53: 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.

  • Page 54: Manually Configuring Basic Settings

    It is best to start the manual configuration from the Setup Wizard: Select your country. Select No to manually configure your modem connection. Click Next. Manually configure the modem in the Basic Settings menu shown in ISP Does Require Login Figure 6-2. Using Router Mode...

  • Page 55: Internet Connection Requires Login And Uses Pppoe

    Select “Use These DNS Servers” if your ISP gave you one or two DNS addresses. Type the primary and secondary addresses. Internet Connection Requires Login and Uses PPPoA If your Internet connection does require login, select Yes and fill in the settings according to the instructions below. Using Router Mode “ADSL Settings“ on...

  • Page 56: Internet Connection Does Not Require A Login

    Enter the IP address that your ISP assigned. Also enter the IP Subnet Mask and the Gateway IP Address. The gateway is the ISP’s modem to which your modem will connect. Domain Name Server (DNS) Address: Using Router Mode...

  • Page 57: Adsl Settings

    “Troubleshooting. ADSL Settings 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).

  • Page 58: Viewing Router Status And Usage Statistics

    From the Main Menu, under Maintenance, select Router Status to view the screen in 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...
  • Page 59 Router Status Connect Mode Downstream Speed Upstream Speed Using Router Mode Description 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 Displays the IP Subnet Mask being used by the Internet (ADSL) port of the modem.
  • Page 60 Click the Show Statistics button to display modem usage statistics, as shown in Figure 6-4: Router Statistics screen This screen shows the following statistics:. Table 6-1. Statistics Fields Field Description WAN, LAN, or The statistics for the WAN (Internet), LAN (local), and Serial ports. For each port, the...
  • Page 61 Click the Connection Status button to display router connection status, as shown in 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...
  • Page 62 Connection Method The method the ADSL port acquired its TCP/IP configuration. IP Address The IP Address assigned to the WAN port by the ADSL Internet Service Provider. Network Mask Then Network Mask assigned to the WAN port by the ADSL Internet Service Provider. 6-10 Figure 6-6 below: Using Router Mode...

  • Page 63: Viewing, Selecting, And Saving Router Mode Logged Information

    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.

  • Page 64: Selecting What Information To Log

    You can choose to write the logs to a computer running a syslog program. To activate this feature, enter the IP address of the server where the Syslog file will be written. 6-12 Table 6-1 below: Table 6-2 Using Router Mode...

  • Page 65: Router Mode Diagnostic Utilities And Rebooting

    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.

  • Page 66: Firewall Services

    1024 to 65535 by the authors of the application. Although the DG632 already holds a list of many service port numbers, you are not limited to these choices. Use the procedure below to create your own service definitions.

  • Page 67: Firewall Rules

    You can also choose to log traffic that matches or does not match the rule you have defined. To access the rules configuration of the DG632, click the Firewall Rules link on the main menu, then click Add for either an Outbound or Inbound Service.

  • Page 68: Inbound Rules (Port Forwarding)

    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.

  • Page 69: Inbound Rule Example: A Local Public Web Server

    If the IP address of the local server computer is assigned by DHCP, it may change when the computer is rebooted. To avoid this, use the Reserved IP address feature in the LAN IP menu to keep the computer’s IP address constant. Using Router Mode A Local Public Web Server Figure...

  • Page 70: Outbound Rules (Service Blocking)

    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. You can define an outbound rule to block Internet access from a local computer based on: •...

  • Page 71: Configuring Advanced Settings

    Click Apply. Configuring Advanced Settings The DG632 ADSL Modem Router provides a variety of advanced features, such as: • Setting up a Demilitarized Zone (DMZ) Server • Connecting Automatically, as Required • Disabling Port Scan and DOS Protection • Responding to a Ping on the Internet WAN Port •...

  • Page 72: How To Configure A Default Dmz Server

    If disabled, you must connect manually, using the sub-screen accessed from the "Connection Status" button on the Status screen. If you have an "Always on" connection, this setting has no effect. 6-20 Using Router Mode...

  • Page 73: Disable Port Scan And Dos Protection

    Advanced heading in the Main Menu of the browser interface. The modem is shipped preconfigured to use private IP addresses on the LAN side, and to act as a DHCP server. The modem’s default LAN IP configuration is: • LAN IP addresses—192.168.0.1 • Subnet mask—255.255.255.0 Using Router Mode 6-21...
  • Page 74 • RIP Direction RIP (Router Information Protocol) allows a modem to exchange routing information with other routers. The RIP Direction selection controls how the Modem sends and receives RIP packets. Both is the default. — When set to Both or Out Only, the modem will broadcast its routing table periodically.

  • Page 75: Dhcp

    Specify the pool of IP addresses to be assigned by setting the Starting IP Address and Ending IP Address. These addresses should be part of the same IP address subnet as the router’s LAN IP address. Using the default addressing scheme, you should define a range between 192.168.0.2 and 192.168.0.254, although you may want to save part of the range for devices with fixed addresses.

  • Page 76: Reserved Ip Addresses

    Click Edit or Delete. How to Configure LAN TCP/IP Settings Log in to the router 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 router.

  • Page 77: Using Static Routes

    In this case you must define a static route, telling your router that 134.177.0.0 should be accessed through the ISDN router at 192.168.0.100. The static route would look like In this example: •...

  • Page 78: How To Configure Static Routes

    Private is selected only as a precautionary security measure in case RIP is activated. How to Configure Static Routes Log in to the router 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 router.
  • Page 79 Type the IP Subnet Mask for this destination. If the destination is a single host, type 255.255.255.255. Type the Gateway IP Address, which must be a router on the same LAN segment as the router. Type a number between 2 and 15 as the Metric value.
  • Page 80 Reference Manual for the Model DG632 ADSL Modem Router 6-28 Using Router Mode...

  • Page 81: 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? •...

  • Page 82: Power Led Not On

    • Check that you are using the 7.5V DC power adapter supplied by NETGEAR for this product. If the error persists, you have a hardware problem and should contact technical support.

  • Page 83: Troubleshooting The Isp Connection

    • 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 for Macintosh Computers” on page C-17 computer’s IP address.

  • Page 84: Wan Led Blinking Yellow

    ADSL service. It may be necessary to use a swapper if your ADSL signal is on pins 2 and 5 or the RJ-11 jack. The DG632 modem router uses pins 3 and 4.

  • Page 85: Troubleshooting Pppoe Or Pppoa

    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. If your router is unable to obtain an IP address from the ISP, the problem may be one of the following: •...

  • Page 86: Troubleshooting Internet Browsing

    Testing the LAN Path to Your Router You can ping the router from your computer to verify that the LAN path to your router is set up correctly.

  • Page 87: Testing The Path From Your Computer To A Remote Device

    In the field provided, type Ping followed by the IP address of the router, as in this example: ping 192.168.0.1 Click OK. You should see a message like this one: Pinging <IP address> with 32 bytes of data If the path is working, you see this message: Reply from <...

  • Page 88: Restoring The Default Configuration And Password

    — 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 —...

  • Page 89: Technical Specifications

    This appendix provides technical specifications for the DG632 ADSL Modem Router. Network Protocol and Standards Compatibility Data and Routing Protocols: Power Adapter North America: United Kingdom, Australia: Europe: Japan: All regions (output): Physical Specifications Dimensions: Weight: Environmental Specifications Operating temperature:...
  • Page 90 LAN: WAN: 10BASE-T or 100BASE-Tx, RJ-45 USB 1.1 ADSL, RJ-11, pins 2 and 3 T1.413, G.DMT, G.Lite ITU Annex A or B Technical Specifications...

  • Page 91: Network And Routing Basics

    (WAN) link such as a cable or DSL modem. In order to make the best use of the slower WAN link, a mechanism must be in place for selecting and transmitting only the data traffic meant for the Internet. The function of selecting and forwarding this data is performed by a router. Network and Routing Basics...

  • Page 92: What Is A Router

    Routers vary in performance and scale, number of routing protocols supported, and types of physical WAN connection they support. The DG632 ADSL Modem Router is a small office router that routes the IP protocol over a single-user broadband connection.
  • Page 93 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.

  • Page 94: Netmask

    • 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).

  • Page 95: Subnet Addressing

    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.”...
  • Page 96 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.

  • Page 97: Private Ip Addresses

    255.255.255.248 255.255.255.252 255.255.255.254 255.255.255.255 NETGEAR strongly recommends that you configure all hosts on a LAN segment to use the same netmask for the following reasons: • So that hosts recognize local IP broadcast packets When a device broadcasts to its segment neighbors, it uses a destination address of the local network address with all ones for the host address.

  • Page 98: Single Ip Address Operation Using Nat

    The DG632 modem router employs an address-sharing method called Network Address Translation (NAT). This method allows several networked PCs to share an Internet account using only a single IP address, which may be statically or dynamically assigned by your ISP.

  • Page 99: Mac Addresses And Address Resolution Protocol

    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.

  • Page 100: Domain Name Server

    IP addresses, along with other information (such as gateway and DNS addresses) that it may assign to the other devices on the network. The DG632 modem router has the capacity to act as a DHCP server.

  • Page 101: 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.

  • Page 102: Category 5 Cable Quality

    Table B-1. UTP Ethernet cable wiring, straight-through Wire color Signal Orange/White Transmit (Tx) + Orange Transmit (Tx) - Green/White Receive (Rx) + Blue Blue/White Green Receive (Rx) - Brown/White Brown 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.

  • Page 103: Inside Twisted Pair Cables

    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.

  • Page 104: Uplink Switches, Crossover Cables, And Mdi/Mdix Switching

    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.
  • Page 105 (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. This feature also eliminates the need to worry about crossover cables, as Auto Uplink will accommodate either type of cable to make the right connection.
  • Page 106 Reference Manual for the Model DG632 ADSL Modem Router B-16 Network and Routing Basics...

  • Page 107: 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). Note: If an ISP technician configured your computer during the installation of a...

  • Page 108: Configuring Windows 95, 98, And Me For Tcp/Ip Networking

    DHCP server during bootup. For a detailed explanation of the meaning and purpose of these configuration items, refer to The DG632 modem router is shipped preconfigured as a DHCP server. The router assigns the following TCP/IP configuration information automatically when the PCs are rebooted: •...
  • Page 109 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.
  • Page 110 If you need Client for Microsoft Networks: Click the Add button. Select Client, and then click Add. Select Microsoft. Select Client for Microsoft Networks, and then click OK. Restart your PC for the changes to take effect. Enabling DHCP to Automatically Configure TCP/IP Settings in Windows 95B, 98, and Me After the TCP/IP protocol components are installed, each PC must be assigned specific information about itself and resources that are available on its network.
  • Page 111 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.

  • Page 112: Selecting The Windows' Internet Access Method

    • 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.

  • Page 113: Configuring Windows Nt4, 2000 Or Xp For Ip Networking

    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: •...

  • Page 114: Dhcp Configuration Of Tcp/Ip In Windows Xp, 2000, Or Nt4

    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.
  • Page 115 • 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.

  • Page 116: Dhcp Configuration Of Tcp/Ip In Windows 2000

    • 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.
  • Page 117 • 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. •...
  • Page 118 • 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.

  • Page 119: Dhcp Configuration Of Tcp/Ip In Windows Nt4

    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.
  • Page 120 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. C-14 Preparing Your Network...

  • Page 121: Verifying Tcp/Ip Properties For Windows Xp, 2000, And Nt4

    Type ipconfig /all Your IP Configuration information will be listed, and 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 192.168.0.2 and 192.168.0.254 •...

  • Page 122: Configuring The Macintosh For Tcp/Ip Networking

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

  • Page 123: Verifying Tcp/Ip Properties For Macintosh Computers

    TCP/IP Control Panel. From the Apple menu, select Control Panels, then TCP/IP. The panel is updated to show your settings, which should match the values below if you are using the default TCP/IP settings that NETGEAR recommends: •...

  • Page 124: Verifying The Readiness Of Your Internet Account

    When the router’s Internet port is connected to the broadband modem, the router appears to be a single PC to the ISP. The router then allows the PCs on the local network to masquerade as the single PC to access the Internet through the broadband modem. The method used by the router to accomplish this is called Network Address Translation (NAT) or IP masquerading.

  • Page 125: Obtaining Isp Configuration Information For Windows Computers

    As mentioned above, you may need to collect configuration information from your PC so that you can use this information when you configure the DG632 modem router. Following this procedure is only necessary when your ISP does not dynamically supply the account information.

  • Page 126: Obtaining Isp Configuration Information For Macintosh Computers

    As mentioned above, you may need to collect configuration information from your Macintosh so that you can use this information when you configure the DG632 modem router. Following this procedure is only necessary when your ISP does not dynamically supply the account information.

  • Page 127: Restarting The Network

    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.
  • Page 128 Reference Manual for the Model DG632 ADSL Modem Router C-22 Preparing Your Network...

  • Page 129: Glossary

    Domain names are of the form of a registered entity name plus one of a number of predefined top level suffixes such as .com, .edu, .uk, and so on. For example, in the address mail.NETGEAR.com, mail is a server name and NETGEAR.com is the domain.
  • Page 130 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.
  • Page 131 Internet. RFCs can be found at www.ietf.org. See Routing Information Protocol. router A device that forwards data between networks. An IP router forwards data based on IP source and destination addresses. Routing Information A protocol in which routers periodically exchange information with one...
  • Page 132 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. 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.

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