NETGEAR DG834 - ADSL Firewall Router Reference Manual
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NETGEAR DG834 - ADSL Firewall Router Reference Manual

NETGEAR DG834 - ADSL Firewall Router Reference Manual

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Download this manual See also: Feature Manual, Reference Manual
Reference Manual for the
Model DG834 ADSL
Firewall Router
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
Phone 1-888-NETGEAR
SM-DG834NA-1
August 2003

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Summary of Contents for NETGEAR DG834 - ADSL Firewall Router

  • Page 1 Reference Manual for the Model DG834 ADSL Firewall Router NETGEAR, Inc. 4500 Great America Parkway Santa Clara, CA 95054 USA Phone 1-888-NETGEAR SM-DG834NA-1 August 2003...
  • 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

    Refer to the Support Information Card that shipped with your DG834 ADSL Firewall Router. World Wide Web NETGEAR maintains a World Wide Web home page that you can access at the universal resource locator (URL) http://www.netgear.com. A direct connection to the Internet and a Web browser such as Internet Explorer...

  • Page 5: Table Of Contents

    Contents Chapter 1 About This Guide Audience, Conventions, Scope ..................1-1 How to Use this Manual ....................1-2 How to Print this Manual ....................1-3 Chapter 2 Introduction About the Router ......................2-1 Key Features ........................2-2 A Powerful, True Firewall ..................2-2 Content Filtering .......................2-2 Auto Sensing and Auto Uplink™...
  • Page 6 Connecting the DG834 to Your LAN ................3-5 How to Connect the Router ..................3-5 Auto-Detecting Your Internet Connection Type ............3-9 Wizard-Detected PPPoE Login Account Setup ............3-10 Wizard-Detected PPPoA Login Account Setup ............3-11 Wizard-Detected Dynamic IP Account Setup ............3-11 Wizard-Detected IP Over ATM Account Setup ............3-12 Wizard-Detected Fixed IP (Static) Account Setup ..........3-13 Testing Your Internet Connection ..................3-14 Manually Configuring Your Internet Connection ............3-15...
  • Page 7 How to Schedule Firewall Services ................4-15 Chapter 5 Managing Your Network Backing Up, Restoring, or Erasing Your Settings ............5-1 How to Back Up the Configuration to a File .............5-1 How to Restore the Configuration from a File ............5-2 How to Erase the Configuration ................5-2 Upgrading the Router’s Firmware ...................5-2 How to Upgrade the Router Firmware ..............5-3 Network Management Information .................5-4...
  • Page 8 How to Configure LAN TCP/IP Settings ..............6-7 Configuring Dynamic DNS ..................6-7 How to Configure Dynamic DNS ................6-8 Using Static Routes ......................6-9 Static Route Example ....................6-9 How to Configure Static Routes ................6-10 Chapter 7 Troubleshooting Basic Functioning ......................7-1 Power LED Not On ....................7-2 Test LED Never Turns On or Test LED Stays On .............7-2 LAN or WAN Port LEDs Not On ................7-2 Troubleshooting the Web Configuration Interface ............7-3...
  • Page 9 Netmask ........................B-4 Subnet Addressing ....................B-5 Private IP Addresses ....................B-7 Single IP Address Operation Using NAT ..............B-8 MAC Addresses and Address Resolution Protocol ..........B-9 Related Documents ....................B-9 Domain Name Server .................... B-10 IP Configuration by DHCP ..................B-10 Internet Security and Firewalls ..................
  • Page 10 Verifying the Readiness of Your Internet Account ............C-18 Are Login Protocols Used? ................... C-18 What Is Your Configuration Information? .............. C-18 Obtaining ISP Configuration Information for Windows Computers ....... C-19 Obtaining ISP Configuration Information for Macintosh Computers ..... C-20 Restarting the Network ....................

  • Page 11: About This Guide

    Product Version DG834 ADSL Firewall Router Manual Publication Date August 2003 Note: Product updates are available on the NETGEAR, Inc. Web site at http:// www.netgear.com/support/main.asp. Documentation updates are available on the NETGEAR, Inc. Web site at http://www.netgear.com/docs. About This Guide...

  • Page 12: How To Use This Manual

    Reference Manual for the Model DG834 ADSL Firewall Router How to Use this Manual The HTML version of this manual includes these features. Figure 1 -1: 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 browser with JavaScript enabled.

  • Page 13: How To Print This Manual

    Reference Manual for the Model DG834 ADSL Firewall Router How to Print this Manual To print this manual you man choose one of the following several 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.
  • Page 14 Reference Manual for the Model DG834 ADSL Firewall Router About This Guide...

  • Page 15: Introduction

    Chapter 2 Introduction This chapter describes the features of the NETGEAR DG834 ADSL Firewall Router. The DG834 router is a combination of a built-in ADSL modem, router, 4-port switch, and firewall which enables your entire network to safely share an Internet connection that otherwise is used by a single computer.

  • Page 16: Key Features

    Reference Manual for the Model DG834 ADSL Firewall Router Key Features The DG834 router provides the following features: • A powerful, true firewall • Content filtering • Auto Sensing and Auto Uplink™ LAN Ethernet connections • Extensive Internet protocol support •...

  • Page 17: Auto Sensing And Auto Uplink™ Lan Ethernet Connections

    Reference Manual for the Model DG834 ADSL Firewall Router Auto Sensing and Auto Uplink™ LAN Ethernet Connections With its internal 4-port 10/100 switch, the DG834 can connect to either a 10 Mbps standard Ethernet network or a 100 Mbps Fast Ethernet network. The local LAN ports are autosensing and capable of full-duplex or half-duplex operation.

  • Page 18: Easy Installation And Management

    Reference Manual for the Model DG834 ADSL Firewall Router • 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. This feature eliminates the need to run a login program such as EnterNet or WinPOET on your computer.

  • Page 19: What's In The Box

    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 product for repair. Introduction...

  • Page 20: The Router's Front Panel

    Reference Manual for the Model DG834 ADSL Firewall Router The Router’s Front Panel The DG834 ADSL Firewall Router front panel shown below contains status LEDs. Power Test Internet Figure 2-1: DG834 Front Panel You can use the LEDs to verify various conditions. Table 2-1 lists and describes each LED on the front panel of the router.

  • Page 21: The Router's Rear Panel

    Reference Manual for the Model DG834 ADSL Firewall Router The Router’s Rear Panel The rear panel of the DG834 ADSL Firewall Router (Figure 2-2) contains port connections. Figure 2-2: DG834 Rear Panel Viewed from left to right, the rear panel contains the following elements: •...
  • Page 22 Reference Manual for the Model DG834 ADSL Firewall Router Introduction...

  • Page 23: Connecting The Router To The Internet

    Chapter 3 Connecting the Router to the Internet This chapter describes how to set up the router on your Local Area Network (LAN) and connect to the Internet. It describes how to configure your DG834 ADSL Firewall 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 DG834 ADSL Firewall Router Note: Do not connect the DG834 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 DG834 from establishing a connection to the Internet. If you have any doubts about this, connect the DG834 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 Firewall 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 “Record Your Internet Connection Information”...

  • Page 26: Record Your Internet Connection Information

    Reference Manual for the Model DG834 ADSL Firewall 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 DG834 ADSL Firewall Router will work fine for most ISPs.

  • Page 27: Connecting The Dg834 To Your Lan

    Reference Manual for the Model DG834 ADSL Firewall Router Connecting the DG834 to Your LAN This section provides instructions for connecting the DG834 router. Note: The Resource CD included with your router contains an animated Installation Assistant to help you through this procedure. How to Connect the Router There are three steps to connecting your firewall: Connect the router to your ADSL line.
  • Page 28 Reference Manual for the Model DG834 ADSL Firewall Router Line 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.
  • Page 29 Reference Manual for the Model DG834 ADSL Firewall Router Line Note: The DG834 router incorporates Auto Uplink technology. Each Ethernet LAN port will automatically sense whether the cable plugged into the port should have a 'normal' connection (for example, connecting to a computer) or an 'uplink' connection (for example, connecting to a switch or hub).
  • Page 30 Reference Manual for the Model DG834 ADSL Firewall Router Connect to the router by typing http://192.168.0.1 in the address field of Internet Explorer or Netscape Navigator. ® Figure 3-7: Log in to the router A login window opens as shown below: Figure 3-8: Login window When prompted, enter admin for the user name and password for the password, both in lower case letters.

  • Page 31: Auto-Detecting Your Internet Connection Type

    Reference Manual for the Model DG834 ADSL Firewall Router ONNECT TO THE NTERNET The router is now properly attached to your network. You are now ready to configure your router to connect to the Internet. There are two ways you can configure your router to connect to the Internet: Let the DG834 auto-detect the type of Internet connection you have and configure it.

  • Page 32: Wizard-Detected Pppoe Login Account Setup

    Reference Manual for the Model DG834 ADSL Firewall Router The ADSL settings for the multiplexing method and VPI/VCI will update with the preset defaults. The multiplexing method preset default settings will usually work. Only change the multiplexing method if you are sure your ISP requires Virtual Path Identifier (VPI) or Virtual Channel Identifier (VCI) settings that are different from the default values.

  • Page 33: Wizard-Detected Pppoa Login Account Setup

    Reference Manual for the Model DG834 ADSL Firewall 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...

  • Page 34: Wizard-Detected Ip Over Atm Account Setup

    DNS server addresses from your ISP and enter them manually here. Click Apply to save the settings. Click the Test button to test your Internet connection. If the NETGEAR Web site does not appear within one minute, refer to Chapter 7, “Troubleshooting”.

  • Page 35: Wizard-Detected Fixed Ip (Static) Account Setup

    DNS servers are required to perform the function of translating an Internet name such as www.netgear.com to a numeric IP address. For a fixed IP address configuration, you must obtain DNS server addresses from your ISP and enter them manually here.

  • Page 36: Testing Your Internet Connection

    Reference Manual for the Model DG834 ADSL Firewall Router Click the Test button to test your Internet connection. If the NETGEAR Web site does not appear within one minute, refer to Chapter 7, “Troubleshooting”. Testing Your Internet Connection After completing the Internet connection configuration, your can test your Internet connection.

  • Page 37: Manually Configuring Your Internet Connection

    Reference Manual for the Model DG834 ADSL Firewall Router Manually Configuring Your Internet Connection You can manually configure your router using the menu below, or you can allow the Setup Wizard to determine your configuration as described in the previous section. ISP Does Not Require Login ISP Does Require Login Figure 3-15: Basic Settings menu...

  • Page 38: Internet Connection Requires Login And Uses Pppoe

    Reference Manual for the Model DG834 ADSL Firewall Router Manually configure the router in the Basic Settings menu shown in Figure 3-15. Follow the instructions below according to the encapsulation method and whether your Internet connection requires a login. The following methods are available: •...

  • Page 39: Internet Connection Requires Login And Uses Pppoa

    Reference Manual for the Model DG834 ADSL Firewall Router Note: Disabling NAT will reboot the router and reset all the DG834 configuration settings to the factory default. Disable NAT only if you plan to install the DG834 in a setting where you will be manually administering the IP address space on the LAN side of the router.

  • Page 40: Internet Connection Does Note Require A Login

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

  • Page 41: Adsl Settings

    ISP. Or, select “Use this MAC address” and enter it. Click Apply to save your settings. Click the Test button to test your Internet connection. If the NETGEAR Web site does not appear within one minute, refer to Chapter 7, “Troubleshooting”.
  • Page 42 Reference Manual for the Model DG834 ADSL Firewall Router 3-20 Connecting the Router to the Internet...

  • Page 43: Protecting Your Network

    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 44: Changing The Administrator Login Timeout

    Reference Manual for the Model DG834 ADSL Firewall Router From the Main Menu of the browser interface, under the Maintenance heading, select Set Password to bring up the menu shown in Figure 4-2. Figure 4-2: Set Password menu To change the password, first enter the old password, and then enter the new password twice. Click Apply to save your changes.

  • Page 45: Blocking Keywords, Sites, And Services

    Reference Manual for the Model DG834 ADSL Firewall Router Blocking Keywords, Sites, and Services The router provides a variety of options for blocking Internet based content and communications services. With its content filtering feature, the DG834 router prevents objectionable content from reaching your PCs.
  • Page 46 Reference Manual for the Model DG834 ADSL Firewall Router Select the Block Sites link of the Security menu. Figure 4-3: Block Sites menu To enable keyword blocking, select one of the following: • Per Schedule to turn on keyword blocking according to the settings on the Schedule page. •...

  • Page 47: Firewall Rules

    Reference Manual for the Model DG834 ADSL Firewall Router Click Apply to save your settings. Firewall Rules Firewall rules are used to block or allow specific traffic passing through from one side to the other. Inbound rules (WAN to LAN) restrict access by outsiders to private resources, selectively allowing only specific outside users to access specific resources.

  • Page 48: Inbound Rules (Port Forwarding)

    Reference Manual for the Model DG834 ADSL Firewall Router • 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. •...

  • Page 49: Inbound Rule Example: A Local Public Web Server

    Reference Manual for the Model DG834 ADSL Firewall 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 from any outside IP address to the IP address of your Web server at any time of day.

  • Page 50: Inbound Rule Example: Allowing Videoconferencing

    Reference Manual for the Model DG834 ADSL Firewall Router • WAN Users These settings determine which packets are covered by the rule, based on their source (WAN) IP address. Select the desired option: • Any — all IP addresses are covered by this rule. •...

  • Page 51: Considerations For Inbound Rules

    Reference Manual for the Model DG834 ADSL Firewall Router Considerations for Inbound Rules • If your external IP address is assigned dynamically by your ISP, the IP address may change periodically as the DHCP lease expires. Consider using the Dynamic DNS feature in the Advanced menus so that external users can always find your network.

  • Page 52: Outbound Rule Example: Blocking Instant Messenger

    Reference Manual for the Model DG834 ADSL Firewall Router Outbound Rule Example: Blocking Instant Messenger If you want to block Instant Messenger usage by employees during working hours, you can create an outbound rule to block that application from any internal IP address to any external address according to the schedule that you have created in the Schedule menu.
  • Page 53 Reference Manual for the Model DG834 ADSL Firewall Router • LAN Users These settings determine which packets are covered by the rule, based on their source LAN IP address. Select the desired option: • Any — all IP addresses are covered by this rule. •...

  • Page 54: Order Of Precedence For Rules

    Reference Manual for the Model DG834 ADSL Firewall Router Order of Precedence for Rules As you define new rules, they are added to the tables in the Rules menu, as shown in Figure 4-8: Figure 4-8: Rules table with examples For any traffic attempting to pass through the firewall, the packet information is subjected to the rules in the order shown in the Rules Table, beginning at the top and proceeding to the default rules at the bottom.

  • Page 55: How To Define Services

    Reference Manual for the Model DG834 ADSL Firewall Router Although the DG834 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. How to Define Services 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 Password and LAN address you have chosen for the router.

  • Page 56: Setting Times And Scheduling Firewall Services

    Reference Manual for the Model DG834 ADSL Firewall Router Click Apply to save your changes. Setting Times and Scheduling Firewall Services The DG834 router uses the Network Time Protocol (NTP) to obtain the current time and date from one of several Network Time Servers on the Internet. How to Set Your Time Zone In order to localize the time for your log entries, you must specify your Time Zone: Log in to the router at its default LAN address of http://192.168.0.1 with its default User Name...

  • Page 57: How To Schedule Firewall Services

    Enabling Daylight Savings Time will cause one hour to be added to the standard time. The router has a list of NETGEAR NTP servers. If you would prefer to use a particular NTP server as the primary server, enter its IP address under Use this NTP Server.
  • Page 58 Reference Manual for the Model DG834 ADSL Firewall Router 4-16 Protecting Your Network...

  • Page 59: Managing Your Network

    Chapter 5 Managing Your Network This chapter describes how to perform network management tasks with your DG834 ADSL Firewall Router. Backing Up, Restoring, or Erasing Your Settings The configuration settings of the DG834 router are stored in a configuration file in the router. This file can be backed up to your computer, restored, or reverted to factory default settings.

  • Page 60: How To Restore The Configuration From A File

    The software of the DG834 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 router.

  • Page 61: How To Upgrade The Router Firmware

    Reference Manual for the Model DG834 ADSL Firewall Router How to Upgrade the Router 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.

  • Page 62: Network Management Information

    Reference Manual for the Model DG834 ADSL Firewall Router Network Management Information The DG834 provides a variety of status and usage information which is discussed below. Viewing Router Status and Usage Statistics From the Main Menu, under Maintenance, select Router Status to view the screen in Figure 5-3.
  • Page 63 Reference Manual for the Model DG834 ADSL Firewall Router This screen shows the following parameters: Table 5-1. Menu 3.2 - Router Status Fields Field Description Account Name The Host Name assigned to the router in the Basic Settings menu. Firmware Version This field displays the router firmware version.
  • Page 64 Reference Manual for the Model DG834 ADSL Firewall Router Click the Show Statistics button to display router usage statistics, as shown in Figure 5-3 below: Figure 5-4: Router Statistics screen This screen shows the following statistics:. Table 5-1. Router Statistics Fields Field Description WAN, LAN, or...
  • Page 65 Reference Manual for the Model DG834 ADSL Firewall Router Click the Connection Status button to display router connection status, as shown in Figure 5-5 Figure 5-6. Figure 5-5: Connection Status screen for Dynamic IP Clicking the Renew button updates the status information. This screen shows the following statistics: Table 5-1.
  • Page 66 Reference Manual for the Model DG834 ADSL Firewall Router An alternate view of the Connection Status screen is shown in Figure 5-6 below: Figure 5-6: Connection Status screen for PPPoA Clicking the Renew button updates the status information. This screen shows the following statistics: Table 5-1.

  • Page 67: Viewing Attached Devices

    Reference Manual for the Model DG834 ADSL Firewall Router Viewing Attached Devices The Attached Devices menu contains a table of all IP devices that the router has discovered on the local network. From the Main Menu of the browser interface, under the Maintenance heading, select Attached Devices to view the table, shown in Figure 5-7 Figure 5-7: Attached Devices menu...
  • Page 68 Reference Manual for the Model DG834 ADSL Firewall Router An example of the logs file is shown below. Figure 5-8: Security Logs menu 5-10 Managing Your Network...

  • Page 69: Selecting What Information To Log

    Reference Manual for the Model DG834 ADSL Firewall Router Log entries are described in Table 5-1 below: Table 5-1. Security Log entry descriptions Field Description Date and Time The date and time the log entry was recorded. Description or The type of event and what action was taken if any. Action Source IP The IP address of the initiating device for this log entry.

  • Page 70: Saving Log Files On A Server

    Following are examples of log messages. In all cases, the log entry shows the timestamp as: Day, Year-Month-Date Hour:Minute:Second Activation and Administration Tue, 2002-05-21 18:48:39 - NETGEAR activated [This entry indicates a power-up or reboot with initial time entry.] Tue, 2002-05-21 18:55:00 - Administrator login successful - IP:192.168.0.2 Thu, 2002-05-21 18:56:58 - Administrator logout - IP:192.168.0.2...

  • Page 71: Enabling Security Event E-Mail Notification

    Reference Manual for the Model DG834 ADSL Firewall Router Enabling Security Event E-mail Notification In order to receive logs and alerts by e-mail, you must provide your e-mail information in the E-mail subheading: • Turn e-mail notification on. Select this box if you want to receive e-mail logs and alerts from the router.

  • Page 72: Running Diagnostic Utilities And Rebooting The Router

    Reference Manual for the Model DG834 ADSL Firewall Router Running Diagnostic Utilities and Rebooting the Router The DG834 router has a diagnostics feature. You can use the diagnostics menu to perform the following functions from the router: • Ping an IP Address to test connectivity to see if you can reach a remote host. •...

  • Page 73: Configuring Remote Management

    Reference Manual for the Model DG834 ADSL Firewall Router Note: Be sure to change the router's default password to a very secure password. The ideal password should contain no dictionary words from any language, and should be a mixture of letters (both upper and lower case), numbers, and symbols. Your password can be up to 30 characters.
  • Page 74 Reference Manual for the Model DG834 ADSL Firewall Router 5-16 Managing Your Network...

  • Page 75: Advanced Configuration

    Chapter 6 Advanced Configuration This chapter describes how to configure the advanced features of your DG834 ADSL Firewall Router. Configuring Advanced Security The DG834 ADSL Firewall Router provides a variety of advanced features, such as: • Setting up a Demilitarized Zone (DMZ) Server •...

  • Page 76: How To Configure A Default Dmz Server

    Reference Manual for the Model DG834 ADSL Firewall Router Note: For security reasons, you should avoid using the Default DMZ Server feature. When a computer is designated as the Default DMZ Server, it loses much of the protection of the firewall, and is exposed to many exploits from the Internet. If compromised, the computer can be used to attack your network.

  • Page 77: Connect Automatically, As Required

    Reference Manual for the Model DG834 ADSL Firewall Router Connect Automatically, as Required Normally, this option should be Enabled, so that an Internet connection will be made automatically, whenever Internet-bound traffic is detected. If this causes high connection costs, you can disable this setting. If disabled, you must connect manually, using the sub-screen accessed from the "Connection Status"...
  • Page 78 Reference Manual for the Model DG834 ADSL Firewall 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 6-2: LAN IP Setup Menu The LAN TCP/IP Setup parameters are: •...

  • Page 79: Dhcp

    Reference Manual for the Model DG834 ADSL Firewall Router • RIP Version This controls the format and the broadcasting method of the RIP packets that the router sends. It recognizes both formats when receiving. By default, this is set for RIP-1. —...

  • Page 80: Reserved Ip Addresses

    Reference Manual for the Model DG834 ADSL Firewall 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 •...

  • Page 81: How To Configure Lan Tcp/Ip Settings

    Reference Manual for the Model DG834 ADSL Firewall Router 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 82: How To Configure Dynamic Dns

    Reference Manual for the Model DG834 ADSL Firewall Router The router contains a client that can connect to a dynamic DNS service provider. To use this feature, you must select a service provider and obtain an account with them. After you have configured your account information in the router, whenever your ISP-assigned IP address changes, your router will automatically contact your dynamic DNS service provider, log in to your account, and register your new IP address.

  • Page 83: Using Static Routes

    Reference Manual for the Model DG834 ADSL Firewall Router If your dynamic DNS provider allows the use of wildcards in resolving your URL, you can select the Use wildcards check box to activate this feature. For example, the wildcard feature will cause *.yourhost.dyndns.org to be aliased to the same IP address as yourhost.dyndns.org Click Apply to save your configuration.

  • Page 84: How To Configure Static Routes

    Reference Manual for the Model DG834 ADSL Firewall Router In this example: • The Destination IP Address and IP Subnet Mask fields specify that this static route applies to all 134.177.x.x addresses. • The Router IP Address fields specifies that all traffic for these addresses should be forwarded to the ISDN router at 192.168.0.100.
  • Page 85 Reference Manual for the Model DG834 ADSL Firewall Router Click the Edit button to open the Edit Menu, shown in Figure 6-5. Figure 6-5: Static Route Entry and Edit Menu Type a route name for this static route in the Route Name box under the table. This is for identification purpose only.
  • Page 86 Reference Manual for the Model DG834 ADSL Firewall Router 6-12 Advanced Configuration...

  • Page 87: Troubleshooting

    Chapter 7 Troubleshooting This chapter gives information about troubleshooting your DG834 ADSL Firewall 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 88: Power Led Not On

    • Check that you are using the 12 V DC power adapter supplied by NETGEAR for this product. If the error persists, you have a hardware problem and should contact technical support.

  • Page 89: Troubleshooting The Web Configuration Interface

    Reference Manual for the Model DG834 ADSL Firewall Router • Make sure that power is turned on to the connected hub or workstation. • Be sure you are using the correct cable: — When connecting the router’s WAN ADSL port, use the cable that was supplied with the DG834.

  • Page 90: Troubleshooting The Isp Connection

    Reference Manual for the Model DG834 ADSL Firewall Router • Click the Refresh or Reload button in the Web browser. The changes may have occurred, but the Web browser may be caching the old configuration. Troubleshooting the ISP Connection If your router is unable to access the Internet, you should check the ADSL connection, then the WAN TCP/IP connection.

  • Page 91: Obtaining A Wan Ip Address

    To check the WAN IP address from the browser interface: Launch your browser and select an external site such as www.netgear.com. Access the Main Menu of the router’s configuration at http://192.168.0.1.

  • Page 92: Troubleshooting Pppoe Or Pppoa

    Reference Manual for the Model DG834 ADSL Firewall Router • Your ISP only allows one Ethernet MAC address to connect to Internet, and may check for your computer’s MAC address. In this case: Inform your ISP that you have bought a new network device, and ask them to use the router’s MAC address.

  • Page 93: Troubleshooting A Tcp/Ip Network Using The Ping Utility

    Reference Manual for the Model DG834 ADSL Firewall Router A DNS server is a host on the Internet that translates Internet names (such as www addresses) to numeric IP addresses. Typically your ISP will provide the addresses of one or two DNS servers for your use.

  • Page 94: Testing The Path From Your Computer To A Remote Device

    Reference Manual for the Model DG834 ADSL Firewall Router • Wrong physical connections — Make sure the LAN port LED is on. If the LED is off, follow the instructions in “LAN or WAN Port LEDs Not On” page 7-2. —...

  • Page 95: Restoring The Default Configuration And Password

    Reference Manual for the Model DG834 ADSL Firewall Router Restoring the Default Configuration and Password This section explains how to restore the factory default configuration settings, changing the router’s administration password to password and the IP address to 192.168.0.1. You can erase the current configuration and restore factory defaults in two ways: •...
  • Page 96 Reference Manual for the Model DG834 ADSL Firewall Router 7-10 Troubleshooting...

  • Page 97: Technical Specifications

    Appendix A Technical Specifications This appendix provides technical specifications for the DG834 ADSL Firewall Router. Network Protocol and Standards Compatibility Data and Routing Protocols: TCP/IP, RIP-1, RIP-2, DHCP, PPP over Ethernet (PPPoE) or PPP over ATM (PPPoA), RFC 1483 Bridged or Routed Ethernet, and RFC 1577 Classical IP over ATM Power Adapter North America:...
  • Page 98 Reference Manual for the Model DG834 ADSL Firewall Router Meets requirements of: FCC Part 15 Class B VCCI Class B EN 55 022 (CISPR 22), Class B Interface Specifications LAN: 10BASE-T or 100BASE-Tx, RJ-45 WAN: ADSL, Dual RJ-11, pins 2 and 3 T1.413, G.DMT, G.Lite ITU Annex A or B Technical Specifications...

  • Page 99: Network And Routing Basics

    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.

  • Page 100: What Is A Router

    Reference Manual for the Model DG834 ADSL Firewall 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.
  • Page 101 Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 102: Netmask

    Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 103: Subnet Addressing

    Reference Manual for the Model DG834 ADSL Firewall 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 104 Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 105: 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 106: Single Ip Address Operation Using Nat

    Reference Manual for the Model DG834 ADSL Firewall Router Single IP Address Operation Using NAT In the past, if multiple PCs on a LAN needed to access the Internet simultaneously, you had to obtain a range of IP addresses from the ISP. This type of Internet account is more costly than a single-address account typically used by a single user with a modem, rather than a router.

  • Page 107: Mac Addresses And Address Resolution Protocol

    Reference Manual for the Model DG834 ADSL Firewall 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 108: 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. Just as...

  • Page 109: What Is A Firewall

    Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 110: Category 5 Cable Quality

    Reference Manual for the Model DG834 ADSL Firewall Router 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 111: Inside Twisted Pair Cables

    Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 112: Uplink Switches, Crossover Cables, And Mdi/Mdix Switching

    Reference Manual for the Model DG834 ADSL Firewall 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 113 Reference Manual for the Model DG834 ADSL Firewall Router The DG834 router incorporates Auto Uplink 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).
  • Page 114 Reference Manual for the Model DG834 ADSL Firewall Router B-16 Network and Routing Basics...

  • Page 115: Appendix C Preparing Your Network

    Appendix C Preparing Your Network This appendix describes how to prepare your network to connect to the Internet through the DG834 ADSL Firewall 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 broadband modem, or if you configured it using instructions provided by your ISP, you may need to copy the current configuration information for use in the configuration of...

  • Page 116: Configuring Windows 95, 98, And Me For Tcp/Ip Networking

    Reference Manual for the Model DG834 ADSL Firewall 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.
  • Page 117 Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 118: Enabling Dhcp To Automatically Configure Tcp/Ip Settings In Windows 95B, 98, And Me

    Reference Manual for the Model DG834 ADSL Firewall Router 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...
  • Page 119 Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 120: Selecting The Windows' Internet Access Method

    Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 121: 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 122: Dhcp Configuration Of Tcp/Ip In Windows Xp, 2000, Or Nt4

    Reference Manual for the Model DG834 ADSL Firewall 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.
  • Page 123 Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 124: Dhcp Configuration Of Tcp/Ip In Windows 2000

    Reference Manual for the Model DG834 ADSL Firewall 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.
  • Page 125 Reference Manual for the Model DG834 ADSL Firewall 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. •...
  • Page 126 Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 127: Dhcp Configuration Of Tcp/Ip In Windows Nt4

    Reference Manual for the Model DG834 ADSL Firewall 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. •...
  • Page 128 Reference Manual for the Model DG834 ADSL Firewall Router • Highlight the TCP/IP Protocol in the Network Protocols box, and click on the Properties button. C-14 Preparing Your Network...

  • Page 129: 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 130: Configuring The Macintosh For Tcp/Ip Networking

    Reference Manual for the Model DG834 ADSL Firewall Router • 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 131: 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 132: Verifying The Readiness Of Your Internet Account

    Reference Manual for the Model DG834 ADSL Firewall 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.

  • Page 133: Obtaining Isp Configuration Information For Windows Computers

    Reference Manual for the Model DG834 ADSL Firewall 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...

  • Page 134: Obtaining Isp Configuration Information For Macintosh Computers

    Reference Manual for the Model DG834 ADSL Firewall 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. Select the DNS Configuration tab. If any DNS server addresses are shown, write down the addresses.

  • Page 135: Restarting The Network

    Reference Manual for the Model DG834 ADSL Firewall 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 DG834 router, you are ready to access and configure the router.
  • Page 136 Reference Manual for the Model DG834 ADSL Firewall Router C-22 Preparing Your Network...

  • Page 137: 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, etc. For example, in the address mail.NETGEAR.com, mail is a server name and NETGEAR.com is the domain.
  • Page 138 Reference Manual for the Model DG834 ADSL Firewall 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).
  • Page 139 Reference Manual for the Model DG834 ADSL Firewall Router Network Address A technique by which several hosts share a single IP address for access to the Translation 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.
  • Page 140 Reference Manual for the Model DG834 ADSL Firewall Router 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.
  • Page 141 Index DHCP Setup field, Ethernet Setup menu 5-5 DMZ Server 6-1 Account Name 3-18 DNS Proxy 2-3 Address Resolution Protocol B-9 DNS server 3-18, C-20 Auto MDI/MDI-X B-15 DNS, dynamic 6-7 Auto Uplink 2-3, B-15 domain C-20 Domain Name 3-18 domain name server (DNS) B-10 backup configuration 5-1 DoS attack B-11...
  • Page 142 MDI/MDI-X B-15 MDI/MDI-X wiring B-14 IANA metric 6-11 contacting B-2 multicasting 6-5 IETF B-1 Web site address B-7 inbound rules 4-6 installation 2-4 NAT C-18 Internet account NAT. See Network Address Translation address information C-18 netmask establishing C-18 translation table B-6 Internet Service Provider 3-1, 3-5 Network Address Translation 2-3, B-8, C-18 IP addresses C-19, C-20...
  • Page 143 time of day 7-9 time zone 4-14 rear panel 2-7 timeout, administrator login 4-2 requirements time-stamping 4-14 hardware 3-2 troubleshooting 7-1 reserved IP adresses 6-6 Trusted Host 4-4 reset button, clearing config 7-9 restore factory settings 5-2 1466 B-7, B-9 Universal Plug and Play 2-4 1597 B-7, B-9 Uplink switch B-14...

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