Page 1 Reference Manual for the ADSL Firewall Router DG834 NETGEAR, Inc. 4500 Great America Parkway Santa Clara, CA 95054 USA Phone 1-888-NETGEAR 202-10005-05 June 2005 202-10005-05, June 2005...
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 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 or Netscape are required.
Page 4 202-10005-05, June 2005...
Page 5: Table Of Contents
Chapter 1 About This Manual Audience, Scope, Conventions, and Formats ...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 ...2-1 A Powerful, True Firewall ...2-2 Easy Installation and Management ...2-2 Protocol Support ...2-3 Virtual Private Networking (VPN) ...2-4 Content Filtering ...2-4...
Page 6 Record Your Internet Connection Information ...3-3 Connecting the DG834 to Your LAN ...3-4 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...
Page 7 How to Set Your Time Zone ...4-13 How to Schedule Firewall Services ...4-14 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...
Page 8 How to Set Up a Client-to-Gateway VPN Configuration ...7-6 Step 1: Configuring the Client-to-Gateway VPN Tunnel on the DG834 ...7-7 Step 2: Configuring the NETGEAR ProSafe VPN Client on the Remote PC ...7-12 How to Set Up a Gateway-to-Gateway VPN Configuration ...7-20 VPN Tunnel Control ...7-27...
Page 9 Chapter 8 Troubleshooting Basic Functioning ...8-1 Power LED Not On ...8-2 Test LED Never Turns On or Test LED Stays On ...8-2 LAN or WAN Port LEDs Not On ...8-2 Troubleshooting the Web Configuration Interface ...8-3 Troubleshooting the ISP Connection ...8-4 ADSL link ...8-4 WAN LED Blinking Yellow ...8-4 WAN LED Off ...8-4...
Page 10 Domain Name Server ... B-9 IP Configuration by DHCP ... B-9 Internet Security and Firewalls ... B-10 What is a Firewall? ... B-10 Stateful Packet Inspection ... B-10 Denial of Service Attack ...B-11 Ethernet Cabling ...B-11 Category 5 Cable Quality ...B-11 Inside Twisted Pair Cables ...
Page 11 VPNC IKE Phase II Parameters ... D-11 Testing and Troubleshooting ... D-11 Additional Reading ... D-11 Appendix E NETGEAR VPN Configuration DG834 to FVL328 ... E-1 Configuration Profile ... E-1 Step-By-Step Configuration ... E-2 DG834 with FQDN to FVL328 ... E-6 Configuration Profile ...
Page 12 Step 2: Configuring the NETGEAR ProSafe VPN Client on the Remote PC at the Telecommuter’s Home Office ... E-17 Monitoring the VPN Tunnel (Telecommuter Example) ... E-26 Viewing the PC Client’s Connection Monitor and Log Viewer ... E-26 Viewing the VPN Router’s VPN Status and Log Information ... E-28...
Page 13: About This Manual
This manual is written for the DG834 ADSL router according to these specifications: Table 1-2. Manual Scope Product Version Manual Publication Date Note: Product updates are available on the NETGEAR, Inc. Web site at http://kbserver.netgear.com/products/DG834.asp. About This Manual About This Manual DG834 ADSL Firewall Router...
Page 14: How To Use This Manual
• button to access the full NETGEAR, Inc. online knowledge base for the product model. • Links to PDF versions of the full manual and individual chapters.
Page 15: How To Print This Manual
How to Print this Manual To print this manual you can choose one of the following several options, according to your needs. • Printing a Page in the HTML View. Each page in the HTML version of the manual is dedicated to a major topic. Use the Print button on the browser toolbar to print the page contents.
Page 16 Reference Manual for the ADSL Firewall Router DG834 About This Manual 202-10005-05, June 2005...
Page 17: Introduction
This chapter describes the features of the NETGEAR DG834 ADSL Firewall Router. The DG834 ADSL 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 18: A Powerful, True Firewall
Reference Manual for the ADSL Firewall Router DG834 • Extensive Internet protocol support • Trustworthy VPN Communications over the Internet • VPN Wizard for easy VPN configuration • Content filtering • Auto Sensing and Auto Uplink™ LAN Ethernet connections These features are discussed below. A Powerful, True Firewall Unlike simple Internet sharing NAT routers, the DG834 is a true firewall, using stateful packet inspection to defend against hacker attacks.
Page 19: Protocol Support
• Remote management The router allows you to log in to the Web management interface from a remote location via the Internet. For security, you can limit remote management access to a specified remote IP address or range of addresses, and you can choose a nonstandard port number. •...
Page 20: Virtual Private Networking (Vpn)
Reference Manual for the ADSL Firewall Router DG834 • 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 21: Auto Sensing And Auto Uplink™ Lan Ethernet Connections
• 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. The Router’s Front Panel The DG834 ADSL Firewall Router front panel shown below contains status LEDs.
Page 22: The Router's Rear Panel
Reference Manual for the ADSL Firewall Router DG834 Power Test Figure 2-1: DG834 Front Panel You can use the LEDs to verify various conditions. front panel of the router. These LEDs are green when lit. Table 2-1. LED Descriptions Label Activity Power Test...
Page 23 Power Figure 2-2: DG834 Rear Panel Viewed from left to right, the rear panel contains the following elements: • AC power adapter outlet • Four Local Ethernet RJ-45 ports for connecting the router to the local computers • Factory Default Reset push button •...
Page 24 Reference Manual for the ADSL Firewall Router DG834 Introduction 202-10005-05, June 2005...
Page 25: Connecting The Router To The Internet
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. What You Need Before You Begin You need to prepare the following before you can establish an Internet connection through your router:...
Page 26: Adsl Microfilter With Built-In Splitter
Reference Manual for the ADSL Firewall Router DG834 Each device such as a telephone, fax machine, answering machine, or caller ID display will require an ADSL microfilter. 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.
Page 27: Internet Configuration Requirements
For Macintosh computers, open the TCP/IP or Network control panel. • You can also refer to the DG834 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 next page.
Page 28: Connecting The Dg834 To Your Lan
Reference Manual for the ADSL Firewall Router DG834 ISP Multiplexing Method and Virtual Circuit Number: The default settings of your DG834 ADSL Firewall 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 29: How To Connect The 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 four steps to connecting your firewall: Install ADSL filters on the phone lines. Connect the router to the ADSL filter. Log in to the router.
Page 30 Reference Manual for the ADSL Firewall Router DG834 Figure 3-4: Connecting an ADSL microfilter and phone Note: To use a one-line filter with a separate splitter, insert the splitter into the phone outlet, connect the one-line filter to the splitter, and connect the phone to the filter. 2.
Page 31 Connect the Ethernet cable (C) from your DG834’s LAN port to the Ethernet adapter in your computer. Figure 3-6: Connecting a computer to the DG834 ADSL router Note: The DG834 ADSL router incorporates Auto Uplink 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 32 Reference Manual for the ADSL Firewall Router DG834 DG834. OG IN TO THE Note: Your computer needs to be configured for DHCP. For instructions on configuring for DHCP, please see Appendix C, “Preparing Your Connect to the router by typing or Netscape Navigator.
Page 33: Auto-Detecting Your Internet Connection Type
Figure 3-9: Setup Wizard 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 34: Wizard-Detected Pppoe Login Account Setup
Reference Manual for the ADSL Firewall Router DG834 Note: If instead of the Setup Wizard menu, the main menu of the router’s Configuration Manager as shown in Figure 3-15 bring up this menu. You must select a country and language. Language choices are English, French, German, and Italian.
Page 35: Wizard-Detected Pppoa Login Account Setup
Reference Manual for the ADSL Firewall Router DG834 Figure 3-10: Setup Wizard menu for PPPoE login accounts Enter the PPPoE login user name and password. 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 3-11 below:...
Page 36: Wizard-Detected Ip Over Atm 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 37: Wizard-Detected Fixed Ip (Static) Account Setup
Click the Test button to test your Internet connection. If the NETGEAR Web site does not appear within one minute, refer to Wizard-Detected Fixed IP (Static) Account Setup If the router determines that your Internet service account uses Fixed IP assignment, you will be...
Page 38: Testing Your Internet Connection
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 Testing Your Internet Connection After completing the Internet connection configuration, your can test your Internet connection.
Page 39: How To Perform Manual Configuration
ISP Does Not Require Login Figure 3-15: Basic Settings menu How to Perform Manual Configuration We recommend that you start the manual configuration from the Setup Wizard: Select your country and language. Language choices are English, French, German, and Italian. After you change the language, the remaining setup screens change to the language of your choice.
Page 40: Internet Connection Requires Login And Uses Pppoe
Reference Manual for the ADSL Firewall Router DG834 • Internet Connection Does Not Require a Login Usually the default ADSL Settings work fine for most ISPs and you can skip this step. If you have any problems with your connection, check the ADSL Settings. See page 3-19 for more details.
Page 41: Internet Connection Requires Login And Uses Pppoa
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. 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.
Page 42: 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 43: Adsl Settings
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 “Troubleshooting”. ADSL Settings The default settings of your DG834 ADSL Firewall Router will work fine for most ISPs. However, some ISPs use a specific Multiplexing Method and Virtual Circuit Number for the Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI).
Page 44 Reference Manual for the ADSL Firewall Router DG834 3-20 Connecting the Router to the Internet 202-10005-05, June 2005...
Page 45: 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 46: Changing The Administrator Login Timeout
Reference Manual for the ADSL Firewall Router DG834 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. Note: After changing the password, you will be required to log in again to continue the configuration.
Page 47: Blocking Keywords, Sites, And Services
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 ADSL router prevents objectionable content from reaching your PCs. The router allows you to control access to Internet content by screening for keywords within Web addresses.
Page 48 Reference Manual for the ADSL Firewall Router DG834 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. • Always—to turn on keyword blocking all of the time, independent of the Schedule page. Enter a keyword or domain in the Keyword box, click Add Keyword, then click Apply.
Page 49: Firewall Rules
Click Apply to save your settings. Firewall Rules Firewall rules are used to block or allow specific traffic passing through from one side of the router 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 50: Inbound Rules (Port Forwarding)
Reference Manual for the ADSL Firewall Router DG834 • 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 51 A Local Public Web Server Figure 4-5: Rule example: The parameters are: • Service From this list, select the application or service to be allowed or blocked. The list already displays many common services, but you are not limited to these choices. Use the Services menu to add any additional services or applications that do not already appear.
Page 52: Inbound Rule Example: Allowing Videoconferencing
Reference Manual for the ADSL Firewall Router DG834 • You can select whether the traffic will be logged. The choices are: – Never — no log entries will be made for this service. – Always — any traffic for this service type will be logged. –...
Page 53: Outbound Rules (Service Blocking)
• 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. •...
Page 54 Reference Manual for the ADSL Firewall Router DG834 Figure 4-7: Rule example: Blocking Instant Messenger The parameters are: • Service From this list, select the application or service to be allowed or blocked. The list already displays many common services, but you are not limited to these choices. Use the Add Custom Service feature to add any additional services or applications that do not already appear.
Page 55: Order Of Precedence For Rules
• WAN Users These settings determine which packets are covered by the rule, based on their destination WAN IP address. Select the desired option: – Any — all IP addresses are covered by this rule. – Address range —if this option is selected, you must enter the Start and Finish fields. –...
Page 56: Services
Reference Manual for the ADSL Firewall Router DG834 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 57: Setting Times And Scheduling Firewall Services
• To create a new Service, click the Add Custom Service button. • To edit an existing Service, select its button on the left side of the table and click Edit Service. • To delete an existing Service, select its button on the left side of the table and click Delete Service.
Page 58: 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 59 Select the Schedule link of the Security menu to display menu shown above in the Services menu. To block Internet services based on a schedule, select Every Day or select one or more days. If you want to limit access completely for the selected days, select All Day. Otherwise, to limit access during certain times for the selected days, enter Start Blocking and End Blocking times.
Page 60 Reference Manual for the ADSL Firewall Router DG834 4-16 Protecting Your Network 202-10005-05, June 2005...
Page 61: 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 ADSL 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 62: How To Restore The Configuration From A File
The software of the DG834 ADSL 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 63: How To Upgrade The Router Firmware
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. Download and unzip the new software file from NETGEAR.
Page 64: Network Management Information
Reference Manual for the ADSL Firewall Router DG834 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 65 Table 5-1. Menu 3.2 - Router Status Fields Field Account Name Firmware Version ADSL Port MAC Address IP Address DHCP IP Subnet Mask Domain Name Server (DNS) This field displays the DNS Server IP addresses being used by the LAN Port MAC Address IP Address DHCP...
Page 66 Reference Manual for the ADSL Firewall Router DG834 Figure 5-4: Router Statistics screen This screen shows the following statistics:. Table 5-1. Router 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 67 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. Connection Status Fields for Dynamic IP Field Description IP Address The IP Address assigned to the WAN port by the ADSL Internet Service Provider. Subnet Mask The Network Mask assigned to the WAN port by the ADSL Internet Service Provider.
Page 68 Reference Manual for the ADSL Firewall Router DG834 An alternate view of the Connection Status screen is shown in 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 69: Viewing Attached Devices
Reference Manual for the ADSL Firewall Router DG834 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:...
Page 70 Reference Manual for the ADSL Firewall Router DG834 Figure 5-8: Security Logs menu Log entries are described in Table 5-1 below: 5-10 Managing Your Network 202-10005-05, June 2005...
Page 71: Selecting What Information To Log
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. Source port and The service port number of the initiating device, and whether it interface...
Page 72: 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 73: Enabling Security Event E-Mail Notification
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: Figure 5-9: E-mail menu • Turn e-mail notification on. Select this check box if you want to receive e-mail logs and alerts from the router.
Page 74: Running Diagnostic Utilities And Rebooting The Router
Reference Manual for the ADSL Firewall Router DG834 If the Weekly, Daily or Hourly option is selected and the log fills up before the specified period, the log is automatically e-mailed to the specified e-mail address. After the log is sent, it is cleared from the router’s memory.
Page 75: Enabling Remote Management
Enabling Remote Management Using the Remote Management page, you can allow a user or users on the Internet to configure, upgrade and check the status of your 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.
Page 76 Reference Manual for the ADSL Firewall Router DG834 When accessing your router from the Internet, you will type your router's WAN IP address in your browser's Address (in IE) or Location (in Netscape) box, followed by a colon (:) and the custom port number.
Page 77: 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 • Connecting Automatically, as Required •...
Page 78: How To Configure A Default Dmz Server
Reference Manual for the ADSL Firewall Router DG834 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 79: Connect Automatically, As Required
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 80 Reference Manual for the ADSL Firewall Router DG834 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 81: Dhcp
• 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. — RIP-1 is universally supported. RIP-1 is probably adequate for most networks, unless you have an unusual network setup.
Page 82: Reserved Ip Addresses
Reference Manual for the ADSL Firewall Router DG834 • 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 83: How To Configure Lan Tcp/Ip Settings
How to Configure LAN TCP/IP Settings Log in to the router at its default LAN address of of admin, default password of password, or using whatever User Name, Password and LAN address you have chosen for the router. From the Main Menu, under Advanced, click the LAN IP Setup link to view the menu, shown Figure 6-3: Figure 6-3: LAN IP Setup Menu...
Page 84: How To Configure Dynamic Dns
Reference Manual for the ADSL Firewall Router DG834 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 85: Using Static Routes
Type the User Name for your dynamic DNS account. Type the Password (or key) for your dynamic DNS account. 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 86: How To Configure Static Routes
Reference Manual for the ADSL Firewall Router DG834 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 87 To add or edit a Static Route: Click the Edit button to open the Edit Menu, shown in Figure 6-6: 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 88: Universal Plug And Play (Upnp)
Reference Manual for the ADSL Firewall Router DG834 Universal Plug and Play (UPnP) Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, access the network and connect to other devices as needed. UPnP devices can automatically discover the services from other registered UPnP devices on the network.
Page 89 • UPnP Portmap Table: The UPnP Portmap Table displays the IP address of each UPnP device that is currently accessing the Router and which ports (Internal and External) that device has opened. The UPnP Portmap Table also displays what type of port is opened and if that port is still active for each IP address.
Page 90 Reference Manual for the ADSL Firewall Router DG834 6-14 Advanced Configuration 202-10005-05, June 2005...
Page 91: Virtual Private Networking (Advanced Feature)
“How to Set Up a Client-to-Gateway VPN Configuration” on page 7-6 needed to configure a VPN tunnel between a remote PC and a network gateway using the VPN Wizard and the NETGEAR ProSafe VPN Client. • “How to Set Up a Gateway-to-Gateway VPN Configuration” on page 7-20 needed to configure a VPN tunnel between two network gateways using the VPN Wizard.
Page 92: Overview Of Vpn Configuration
Gateway-to-Gateway VPN Tunnels provide secure access between networks, such as a branch or home office and a main office (see Figure 7-1). VPN Tunnel to set up this configuration. Figure 7-2). Virtual Private Networking (Advanced Feature) 202-10005-05, June 2005 (Running NETGEAR ProSafe VPN Client) “How to Set Up a...
Page 93: Planning A Vpn
DG834 VPN Firewall Figure 7-2: Gateway-to-Gateway VPN Tunnel A VPN between two or more NETGEAR VPN-enabled routers is a good way to connect branch or home offices and business partners over the Internet. VPN tunnels also enable access to network resources across the Internet.
Page 94 Reference Manual for the ADSL Firewall Router DG834 Table 7-1. VPN Tunnel Configuration Worksheet Connection Name: Pre-Shared Key: Secure Association -- Main Mode or Manual Keys: Perfect Forward Secrecy -- Enabled or Disabled: NETBIOS -- Enabled or Disabled: Encryption Protocol -- DES or 3DES: Authentication Protocol -- MD5 or SHA-1: Diffie-Hellman (DH) Group -- Group 1 or Group 2: Key Life in seconds:...
Page 95 — MDS: 128 bits, faster but less secure. — SHA-1: 160 bits, slower but more secure. Note: NETGEAR publishes additional interoperability scenarios with various gateway and client software products. Look on the NETGEAR web site at www.netgear.com for these interoperability scenarios.
Page 96: Vpn Tunnel Configuration
DG834 and the corresponding VPN endpoint gateway or client workstation. How to Set Up a Client-to-Gateway VPN Configuration Setting up a VPN between a remote PC running the NETGEAR ProSafe VPN Client and a network gateway (see Figure 7-3) involves the following two steps: •...
Page 97: Step 1: Configuring The Client-To-Gateway Vpn Tunnel On The Dg834
Reference Manual for the ADSL Firewall Router DG834 VPN Tunnel Table 7-2 on page 7-5. If you have special requirements not to set up the VPN tunnel. 202-10005-05, June 2005 0.0.0.0 (Running NETGEAR ProSafe VPN Client) “How to Set Up VPN...
Page 98 Reference Manual for the ADSL Firewall Router DG834 The worksheet below identifies the parameters used in the following procedure. A blank worksheet is at “Planning a VPN” on page Table 7-3. VPN Tunnel Configuration Worksheet Connection Name: Pre-Shared Key: Secure Association -- Main Mode or Manual Keys: Perfect Forward Secrecy -- Enabled or Disabled: NETBIOS -- Enabled or Disabled: Encryption Protocol -- DES or 3DES:...
Page 99 Figure 7-4: VPN Wizard Start Screen Fill in the Connection Name and the pre-shared key, select the type of target end point, and click Next to proceed. Note: The Connection Name is arbitrary and not relevant to how the configuration functions. Figure 7-5: Connection Name and Remote IP Type Virtual Private Networking (Advanced Feature) Reference Manual for the ADSL Firewall Router DG834...
Page 100 Reference Manual for the ADSL Firewall Router DG834 The Summary screen below displays. Figure 7-6: VPN Wizard Summary 7-10 Virtual Private Networking (Advanced Feature) 202-10005-05, June 2005...
Page 101 To view the VPNC recommended authentication and encryption settings used by the VPN Wizard, click the “here” link (see Figure 7-7: VPNC Recommended Settings Click Done on the Summary screen (see The VPN Policies menu below displays showing that the new tunnel is enabled. Figure 7-8: VPN Policies To view or modify the tunnel settings, select the radio button next to the tunnel entry and click Edit.
Page 102: Step 2: Configuring The Netgear Prosafe Vpn Client On The Remote Pc
This procedure describes how to configure the NETGEAR ProSafe VPN Client. We will assume the PC running the client has a dynamically assigned IP address. The PC must have the NETGEAR ProSafe VPN Client program installed that supports IPSec. Go to the NETGEAR website (http://www.netgear.com) and select VPN01L_VPN05L in the Product Quick Find drop-down menu for information on how to purchase the NETGEAR ProSafe VPN Client.
Page 103 Note: In this example, the Connection Name used on the client side of the VPN tunnel is toDG834 and it does not have to match the RoadWarrior Connection Name used on the gateway side of the VPN tunnel (see to how the VPN tunnel functions. Tip: Choose Connection Names that make sense to the people using and administrating the VPN.
Page 104 In this example, • The resulting Connection Settings are shown in Configure the Security Policy in the NETGEAR ProSafe VPN Client software. • In the Network Security Policy list, expand the new connection by double clicking its name or clicking on the “+” symbol. My Identity and Security Policy subheadings appear below the connection name.
Page 105 • In the Network Security Policy list on the left side of the Security Policy Editor window, click on My Identity. Figure 7-12: Security Policy Editor My Identity • Choose None in the Select Certificate menu. • Select IP Address in the ID Type menu. If you are using a virtual fixed IP address, enter this address in the Internal Network IP Address box.
Page 106 Reference Manual for the ADSL Firewall Router DG834 Configure the VPN Client Authentication Proposal. In this step, you will provide the type of encryption (DES or 3DES) to be used for this connection. This selection must match your selection in the DG834 configuration. •...
Page 107 • Expand the Key Exchange subheading by double clicking its name or clicking on the “+” symbol. Then select Proposal 1 below Key Exchange. Figure 7-15: Security Policy Editor Key Exchange • In the SA Life menu, select Unspecified. • In the Compression menu, select None.
Page 108 To check the VPN Connection, you can initiate a request from the remote PC to the DG834’s network by using the “Connect” option in the NETGEAR ProSafe menu bar. The NETGEAR ProSafe client will report the results of the attempt to connect. Since the remote PC has a dynamically assigned WAN IP address, it must initiate the request.
Page 109 NETGEAR ProSafe Log Viewer. To launch this function, click on the Windows Start button, then select Programs, then NETGEAR ProSafe VPN Client, then Log Viewer. The Log Viewer screen for a successful connection is shown below: Figure 7-18: Log Viewer screen Note: Use the active VPN tunnel information and pings to determine whether a failed connection is due to the VPN tunnel or some reason outside the VPN tunnel.
Page 110: How To Set Up A Gateway-To-Gateway Vpn Configuration
Reference Manual for the ADSL Firewall Router DG834 • The DG834 has a LAN IP address of 192.168.3.1. • The VPN client PC has a dynamically assigned address of 192.168.2.2. While the connection is being established, the Connection Name field in this menu will say “SA” before the name of the connection.
Page 111 DG834_B Note: The LAN IP address ranges of each VPN endpoint must be different. The connection will fail if both are using the NETGEAR default address range of 192.168.0.x. Virtual Private Networking (Advanced Feature) Reference Manual for the ADSL Firewall Router DG834...
Page 112 Reference Manual for the ADSL Firewall Router DG834 Follow this procedure to configure a gateway-to-gateway VPN tunnel using the VPN Wizard. Log in to the DG834 on LAN A at its default LAN address of default user name of admin main menu to display this screen.
Page 113 3. Fill in the IP Address or FQDN for the target VPN endpoint WAN connection and click Next. Figure 7-23: Remote IP 4. Identify the IP addresses at the target endpoint which can use this tunnel, and click Next. Figure 7-24: Secure Connection Remote Accessibility Virtual Private Networking (Advanced Feature) Reference Manual for the ADSL Firewall Router DG834 Enter the WAN IP address of the remote...
Page 114 Reference Manual for the ADSL Firewall Router DG834 The Summary screen below displays. Figure 7-25: VPN Wizard Summary 7-24 Virtual Private Networking (Advanced Feature) 202-10005-05, June 2005...
Page 115 To view the VPNC recommended authentication and encryption settings used by the VPN Wizard, click the “here” link (see Figure 7-26: VPN Recommended Settings Click Done on the Summary screen (see procedure. The VPN Settings menu below displays showing that the new tunnel is enabled. Figure 7-27: VPN Policies Note: Refer to “Using Auto Policy to Configure VPN Tunnels”...
Page 116 Reference Manual for the ADSL Firewall Router DG834 Repeat for the DG834 on LAN B and pay special attention to use the following network settings as appropriate. • WAN IP of the remote VPN gateway (e.g., 14.15.16.17) • LAN IP settings of the remote VPN gateway: —...
Page 117: Vpn Tunnel Control
Figure 7-29: Current VPN Tunnels (SAs) Screen Look at the VPN Status/Log screen VPN Tunnel Control Activating a VPN Tunnel There are three ways to activate a VPN tunnel: • Use the VPN Status page. • Activate the VPN tunnel by pinging the remote endpoint. •...
Page 118: Activate The Vpn Tunnel By Pinging The Remote Endpoint
Reference Manual for the ADSL Firewall Router DG834 Figure 7-30: VPN Status/Log Screen Click on VPN Status (Figure (Figure 7-31). Click on Connect for the VPN tunnel you want to activate. Figure 7-31: Current VPN Tunnels (SAs) Screen Activate the VPN Tunnel by Pinging the Remote Endpoint Note: This section uses 192.168.3.1 for an example remote endpoint LAN IP address.
Page 119 Client-to-Gateway Configuration—to check the VPN Connection, you can initiate a request from the remote PC to the DG834’s network by using the “Connect” option in the NETGEAR ProSafe menu bar. The NETGEAR ProSafe client will report the results of the attempt to connect.
Page 120: Start Using A Vpn Tunnel To Active It
Reference Manual for the ADSL Firewall Router DG834 Once the connection is established, you can open the browser of the PC and enter the LAN IP address of the remote DG834. After a short wait, you should see the login screen of the Router (unless another PC already has the DG834 management interface open).
Page 121 Figure 7-35: VPN Status/Log Screen Click on VPN Status (Figure (Figure 7-31). This table lists the following data for each active VPN Tunnel. • SPI—each SA has a unique SPI (Security Parameter Index) for traffic in each direction. For "Manual" key exchange, the SPI is specified in the Policy definition. For "Automatic" key exchange, the SPI is generated by the IKE protocol.
Page 122: Deactivating A Vpn Tunnel
Reference Manual for the ADSL Firewall Router DG834 Figure 7-36: Current VPN Tunnels (SAs) Screen Deactivating a VPN Tunnel Sometimes a VPN tunnel must be deactivated for testing purposes. There are two ways to deactivate a VPN tunnel: • Policy table on VPN Policies page •...
Page 123: Using The Vpn Status Page To Deactivate A Vpn Tunnel
Figure 7-37: VPN Policies Clear the Enable check box for the VPN tunnel you want to deactivate and click Apply. (To reactivate the tunnel, check the Enable box and click Apply.) Using the VPN Status Page to Deactivate a VPN Tunnel To use the VPN Status page to deactivate a VPN tunnel, perform the following steps: Log in to the Router.
Page 124 Reference Manual for the ADSL Firewall Router DG834 Figure 7-38: VPN Status/Log Screen Click VPN Status (Figure Click Drop for the VPN tunnel you want to deactivate. Figure 7-39: Current VPN Tunnels (SAs) Screen 7-34 7-38) to get the Current VPN Tunnels (SAs) screen Virtual Private Networking (Advanced Feature) 202-10005-05, June 2005 (Figure...
Page 125: Deleting A Vpn Tunnel
Note: When NETBIOS is enabled (which it is in the VPNC defaults implemented by the VPN Wizard), automatic traffic will reactivate the tunnel. To prevent reactivation from happening, either disable NETBIOS or disable the policy for the tunnel (see “Using the Policy Table on the VPN Policies Page to Deactivate a VPN Tunnel” on page 7-32).
Page 126: Using Auto Policy To Configure Vpn Tunnels
Reference Manual for the ADSL Firewall Router DG834 • Manual Policy—for a Manual Keying setup in which you must specify each phase of the connection, see “Using Manual Policy to Configure VPN Tunnels” on page Policy does not use IKE. Rather, you manually enter all the authentication and key parameters. You have more control over the process, however the process is more complex and there are more opportunities for errors or configuration mismatches between your DG834 and the corresponding VPN endpoint gateway or client workstation.
Page 127 Reference Manual for the ADSL Firewall Router DG834 Figure 7-41: DG834 VPN Tunnel Auto Policy Configuration Menu Virtual Private Networking (Advanced Feature) 7-37 202-10005-05, June 2005...
Page 128 Reference Manual for the ADSL Firewall Router DG834 The DG834 VPN tunnel network connection fields are defined as follows: General These settings identify this policy and determine its major characteristics. • Policy Name—Enter a unique name to identify this policy. This name is not supplied to the remote VPN endpoint.
Page 129 Remote LAN This identifies which PCs on the remote LAN are covered by this policy. For each selection, data must be provided as follows: — • Single PC - no Subnet select this option if there is no LAN (only a single PC) at the remote endpoint.
Page 130 Reference Manual for the ADSL Firewall Router DG834 Local Identity Data—enter the data for the selection above. (If "WAN IP Address" is selected, no input is required.) Remote Identity Type—select the desired option to match the "Local Identity Type" setting on the remote VPN endpoint.
Page 131: Example Of Using Auto Policy
This setting applies to both IKE and IPSec SAs. When configuring the remote endpoint to match this setting, you may have to specify the "Key Group" used. For this device, the "Key Group" is the same as the "DH Group" setting in the IKE section. Example of Using Auto Policy 14.15.16.17 DG834 VPN Firewall...
Page 132 Reference Manual for the ADSL Firewall Router DG834 Table 7-1. VPN Tunnel Configuration Worksheet Connection Name: Pre-Shared Key: Secure Association -- Main Mode or Manual Keys: Perfect Forward Secrecy -- Enabled or Disabled: NETBIOS -- Enabled or Disabled: Encryption Protocol -- DES or 3DES: Authentication Protocol -- MD5 or SHA-1: Diffie-Hellman (DH) Group -- Group 1 or Group 2: Key Life in seconds:...
Page 133 Open the DG834 on LAN A management interface and click on VPN Policies. Figure 7-43: VPN Policies Screen Click Add Auto Policy. Enter policy settings (see Figure • General — Policy Name = GtoG — Remote VPN Endpoint Address Type = Fixed IP Address —...
Page 134 Reference Manual for the ADSL Firewall Router DG834 — Remote Identity Type = use default setting • Parameters — Encryption Algorithm = 3DES — Authentication Algorithm = MD5 — Pre-shared Key = 12345678 7-44 Virtual Private Networking (Advanced Feature) 202-10005-05, June 2005...
Page 135 Reference Manual for the ADSL Firewall Router DG834 Figure 7-44: VPN Auto Policies Screen Virtual Private Networking (Advanced Feature) 7-45 202-10005-05, June 2005...
Page 136 Reference Manual for the ADSL Firewall Router DG834 Click Apply. The Get VPN Policies web page is displayed. Figure 7-45: VPN Policies Screen Repeat for the DG834 on LAN B and pay special attention to use the following network settings as appropriate. •...
Page 137 Figure 7-46: VPN Status/Log Screen Click VPN Status (Figure (Figure 7-47). Click on Connect for the VPN tunnel you want to activate. Figure 7-47: Current VPN Tunnels (SAs) Screen Review the VPN Status/Log screen Virtual Private Networking (Advanced Feature) Reference Manual for the ADSL Firewall Router DG834 7-46) to display the Current VPN Tunnels (SAs) screen (Figure 7-46) to verify that the tunnel is connected.
Page 138: Using Manual Policy To Configure Vpn Tunnels
Reference Manual for the ADSL Firewall Router DG834 Using Manual Policy to Configure VPN Tunnels As an alternative to IKE, you may use Manual Keying, in which you must specify each phase of the connection. A "Manual" VPN policy requires all settings for the VPN tunnel to be manually input at each end (both VPN endpoints).
Page 139 General The DG834 VPN tunnel network connection fields are defined as follows: • Policy Name—enter a unique name to identify this policy. This name is not supplied to the remote VPN endpoint. It is used only to help you manage the policies. •...
Page 140 Reference Manual for the ADSL Firewall Router DG834 • Range address—enter the starting IP address in the "Single/Start IP address" field, and the finish IP address in the "Finish IP address" field. This must be an address range used on the remote LAN.
Page 141: 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 142: 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 143: Troubleshooting The Web Configuration Interface
• 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. Troubleshooting the Web Configuration Interface If you are unable to access the router’s Web Configuration interface from a computer on your local network, check the following:...
Page 144: Adsl Link
Reference Manual for the ADSL Firewall Router DG834 • 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 145: 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 146: Troubleshooting Pppoe Or Pppoa
Reference Manual for the ADSL Firewall Router DG834 • 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 147: Troubleshooting A Tcp/Ip Network Using The Ping Utility
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. If you entered a DNS address during the router’s configuration, reboot your computer and verify the DNS address as described in page C-6.
Page 148: Testing The Path From Your Computer To A Remote Device
Reference Manual for the ADSL Firewall Router DG834 • Wrong physical connections — Make sure the LAN port LED is on. If the LED is off, follow the instructions in or WAN Port LEDs Not On” — Check that the corresponding Link LEDs are on for your network interface card and for the hub ports (if any) that are connected to your workstation and router.
Page 149: Restoring The Default Configuration And Password
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 150 Reference Manual for the ADSL Firewall Router DG834 8-10 Troubleshooting 202-10005-05, June 2005...
Page 151: Technical Specifications
This appendix provides technical specifications for the DG834 ADSL Firewall 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: Operating humidity: Technical Specifications Technical Specifications...
Page 152 Reference Manual for the ADSL Firewall Router DG834 Electromagnetic Emissions Meets requirements of: Interface Specifications LAN: WAN: FCC Part 15 Class B VCCI Class B EN 55 022 (CISPR 22), Class B 10BASE-T or 100BASE-Tx, RJ-45 ADSL, Dual RJ-11, pins 2 and 3 T1.413, G.DMT, G.Lite ITU Annex A or B 202-10005-05, June 2005...
Page 153: 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 154: Routing Information Protocol
Reference Manual for the ADSL Firewall Router DG834 Routing Information Protocol One of the protocols used by a router to build and maintain a picture of the network is the Routing Information Protocol (RIP). Using RIP, routers periodically update one another and check for changes to add to the routing table.
Page 155 Class A Network Class B Network Class C Network Figure 8-1: Three Main Address Classes The five address classes are: • Class A Class A addresses can have up to 16,777,214 hosts on a single network. They use an eight-bit network number and a 24-bit node number.
Page 156: Subnet Addressing
Reference Manual for the ADSL Firewall Router DG834 This addressing structure allows IP addresses to uniquely identify each physical network and each node on each physical network. For each unique value of the network portion of the address, the base address of the range (host address of all zeros) is known as the network address and is not usually assigned to a host.
Page 157 Subnet addressing allows us to split one IP network address into smaller multiple physical networks known as subnetworks. Some of the node numbers are used as a subnet number instead. A Class B address gives us 16 bits of node numbers translating to 64,000 nodes. Most organizations do not use 64,000 nodes, so there are free bits that can be reassigned.
Page 158 255.255.255.240 255.255.255.248 255.255.255.252 255.255.255.254 255.255.255.255 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 202-10005-05, June 2005 Network and Routing Basics...
Page 159: Private Ip Addresses
10.0.0.0 - 10.255.255.255 172.16.0.0 - 172.31.255.255 192.168.0.0 - 192.168.255.255 NETGEAR recommends that you choose your private network number from this range. The DHCP server of the DG834 ADSL router is preconfigured to automatically assign private addresses. Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines explained here.
Page 160: Mac Addresses And Address Resolution Protocol
Reference Manual for the ADSL Firewall Router DG834 Private IP addresses assigned by user 192.168.0.2 192.168.0.3 192.168.0.1 192.168.0.4 192.168.0.5 Figure 8-3: Single IP Address Operation Using NAT 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.
Page 161: Related Documents
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 162: Internet Security And Firewalls
Reference Manual for the ADSL Firewall Router DG834 The DG834 ADSL router also functions as a DHCP client when connecting to the ISP. The router can automatically obtain an IP address, subnet mask, DNS server addresses, and a gateway address if the ISP provides this information by DHCP.
Page 163: Ethernet Cabling
Denial of Service Attack A hacker may be able to prevent your network from operating or communicating by launching a Denial of Service (DoS) attack. The method used for such an attack can be as simple as merely flooding your site with more requests than it can handle. A more sophisticated attack may attempt to exploit some weakness in the operating system used by your router or gateway.
Page 164: Inside Twisted Pair Cables
Reference Manual for the ADSL Firewall Router DG834 10 ft. (3 m) from the wall outlet to the desktop device The patch panel and other connecting hardware must meet the requirements for 100 Mbps operation (Category 5). Only 0.5 inch (1.5 cm) of untwist in the wire pair is allowed at any termination point.
Page 165: Uplink Switches, Crossover Cables, And Mdi/Mdix Switching
Reference Manual for the ADSL Firewall Router DG834 Figure B-2: Crossover Twisted-Pair Cable 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 166 Reference Manual for the ADSL Firewall Router DG834 When connecting a PC to a PC, or a hub port to another hub port, the transmit pair must be exchanged with the receive pair. This exchange is done by one of two mechanisms. Most hubs provide an Uplink switch which will exchange the pairs on one port, allowing that port to be connected to another hub using a normal Ethernet cable.
Page 167: 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 your router.
Page 168: Configuring Windows 95, 98, And Me For Tcp/Ip Networking
Reference Manual for the ADSL Firewall Router DG834 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 169 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 170: Enabling Dhcp To Automatically Configure Tcp/Ip Settings In Windows 95B, 98, And Me
Reference Manual for the ADSL Firewall Router DG834 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 171 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 172: Selecting The Windows' Internet Access Method
Reference Manual for the ADSL Firewall Router DG834 • 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 173: 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 174: Dhcp Configuration Of Tcp/Ip In Windows Xp, 2000, Or Nt4
Reference Manual for the ADSL Firewall Router DG834 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 175 • 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 176: Dhcp Configuration Of Tcp/Ip In Windows 2000
Reference Manual for the ADSL Firewall Router DG834 • 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 177 • 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 178 Reference Manual for the ADSL Firewall Router DG834 • 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 179: 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 180 Reference Manual for the ADSL Firewall Router DG834 • Highlight the TCP/IP Protocol in the Network Protocols box, and click on the Properties button. C-14 202-10005-05, June 2005 Preparing Your Network...
Page 181: 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 182: Configuring The Macintosh For Tcp/Ip Networking
Reference Manual for the ADSL Firewall Router DG834 • 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 183: 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 184: Verifying The Readiness Of Your Internet Account
Reference Manual for the ADSL Firewall Router DG834 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 185: Obtaining Isp Configuration Information For Windows Computers
• An IP address and subnet mask • A gateway IP address, which is the address of the ISP’s router • One or more domain name server (DNS) IP addresses • Host name and domain suffix For example, your account’s full server names may look like this: mail.xxx.yyy.com In this example, the domain suffix is If any of these items are dynamically supplied by the ISP, your router automatically acquires them.
Page 186: Obtaining Isp Configuration Information For Macintosh Computers
Reference Manual for the ADSL Firewall Router DG834 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 187: Restarting The Network
Reference Manual for the ADSL Firewall Router DG834 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 ADSL router, you are ready to access and configure the router.
Page 188 Reference Manual for the ADSL Firewall Router DG834 C-22 Preparing Your Network 202-10005-05, June 2005...
Page 189: Virtual Private Networking
There have been many improvements in the Internet including Quality of Service, network performance, and inexpensive technologies, such as DSL. But one of the most important advances has been in Virtual Private Networking (VPN) Internet Protocol security (IPSec). IPSec is one of the most complete, secure, and commercially available, standards-based protocols developed for transporting data.
Page 190: What Is Ipsec And How Does It Work
Reference Manual for the ADSL Firewall Router DG834 • Remote Access: Remote access enables telecommuters and mobile workers to access e-mail and business applications. A dial-up connection to an organization’s modem pool is one method of access for remote workers, but is expensive because the organization must pay the associated long distance telephone and service costs.
Page 191: Encapsulating Security Payload (Esp
• Encapsulating Security Payload (ESP): Provides confidentiality, authentication, and integrity. • Authentication Header (AH): Provides authentication and integrity. • Internet Key Exchange (IKE): Provides key management and Security Association (SA) management. Encapsulating Security Payload (ESP) ESP provides authentication, integrity, and confidentiality, which protect against data tampering and, most importantly, provide message content protection.
Page 192: Authentication Header (Ah
Reference Manual for the ADSL Firewall Router DG834 The ESP header is inserted into the packet between the IP header and any subsequent packet contents. However, because ESP encrypts the data, the payload is changed. ESP does not encrypt the ESP header, nor does it encrypt the ESP authentication. Authentication Header (AH) AH provides authentication and integrity, which protect against data tampering, using the same algorithms as ESP.
Page 193: Mode
Mode SAs operate using modes. A mode is the method in which the IPSec protocol is applied to the packet. IPSec can be used in tunnel mode or transport mode. Typically, the tunnel mode is used for gateway-to-gateway IPSec tunnel protection, while transport mode is used for host-to-host IPSec tunnel protection.
Page 194: Key Management
This document provides case studies on how to configure secure IPSec VPN tunnels. This document assumes the reader has a working knowledge of NETGEAR management systems. NETGEAR is a member of the VPN Consortium, a group formed to facilitate IPSec VPN vendor interoperability. The VPN Consortium has developed specific scenarios to aid system administrators in the often confusing process of connecting two different vendor implementations of the IPSec standard.
Page 195: Vpn Process Overview
Reference Manual for the ADSL Firewall Router DG834 VPN Process Overview Even though IPSec is standards-based, each vendor has its own set of terms and procedures for implementing the standard. Because of these differences, it may be a good idea to review some of the terms and the generic processes for connecting two gateways before diving into to the specifics.
Page 196: Firewalls
Reference Manual for the ADSL Firewall Router DG834 Table D-1. WAN (Internet/Public) and LAN (Internal/Private) Addressing Gateway LAN or WAN Gateway A LAN (Private) Gateway A WAN (Public) Gateway B LAN (Private) Gateway B WAN (Public) It will also be important to know the subnet mask of both gateway LAN Connections. Use the worksheet in Table 7-1 page 7-4...
Page 197 Reference Manual for the ADSL Firewall Router DG834 VPN Tunnel DG834 VPN Firewall DG834 VPN Firewall Figure D-5: VPN Tunnel SA The SA contains all the information necessary for gateway A to negotiate a secure and encrypted communication stream with gateway B. This communication is often referred to as a “tunnel.” The gateways contain this information so that it does not have to be loaded onto every computer connected to the gateways.
Page 198: Vpnc Ike Security Parameters
Reference Manual for the ADSL Firewall Router DG834 IKE Phase I. The two parties negotiate the encryption and authentication algorithms to use in the IKE SAs. The two parties authenticate each other using a predetermined mechanism, such as preshared keys or digital certificates. A shared master key is generated by the Diffie-Hellman Public key algorithm within the IKE framework for the two parties.
Page 199: Vpnc Ike Phase Ii Parameters
LAN-side of the other gateway. You can troubleshoot connections using the VPN status and log details on the Netgear gateway to determine if IKE negotiation is working. Common problems encountered in setting up VPNs include: •...
Page 200 Reference Manual for the ADSL Firewall Router DG834 • [RFC 791] Internet Protocol DARPA Internet Program Protocol Specification, Information Sciences Institute, USC, September 1981. • [RFC 1058] Routing Information Protocol, C Hedrick, Rutgers University, June 1988. • [RFC 1483] Multiprotocol Encapsulation over ATM Adaptation Layer 5, Juha Heinanen, Telecom Finland, July 1993.
Page 201: Netgear Vpn Configuration
DG834 to FVL328 This appendix is a case study on how to configure a secure IPSec VPN tunnel from a NETGEAR DG834 to a FVL328. This case study follows the VPN Consortium interoperability profile guidelines (found at http://www.vpnc.org/InteropProfiles/Interop-01.html). Configuration Profile The configuration in this document follows the addressing and configuration mechanics defined by the VPN Consortium.
Page 202: Step-By-Step Configuration
LAN IP 10.5.6.1 DG834 Figure E-1: Addressing and Subnet Used for Examples Note: Product updates are available on the NETGEAR, Inc. web site at http://kbserver.netgear.com/DG834.asp. Step-By-Step Configuration Configure the DG834 as in the Gateway-to-Gateway procedures using the VPN Wizard (see “How to Set Up a Gateway-to-Gateway VPN Configuration“...
Page 203 10.5.6.1 toFVL328 Figure E-2: Viewing and editing the VPN parameters of the DG834 at gateway A NETGEAR VPN Configuration Reference Manual for the ADSL Firewall Router DG834 Click VPN Policies under Advanced - VPN to invoke this screen 172.23.9.1 toFVL328 202-10005-05, June 2005 22.23.24.25...
Page 204 In Step 1, enter toDG834 for the Connection Name In Step 2, enter 14.15.16.17 for the remote WAN's IP address In Step 3, enter the following: • IP Address = 10.5.6.1 • Subnet Mask = 255.255.255.0 202-10005-05, June 2005 7-20), being certain to NETGEAR VPN Configuration...
Page 205 172.23.9.1 Click VPN Policies under VPN to invoke this screen Figure E-3: Viewing and editing the VPN parameters of the FVL328 at gateway B NETGEAR VPN Configuration Reference Manual for the ADSL Firewall Router DG834 10.5.6.1 202-10005-05, June 2005 toDG834 22.23.24.25...
Page 206: Configuration Profile
DG834 with FQDN to FVL328 This appendix is a case study on how to configure a VPN tunnel from a NETGEAR DG834 to a FVL328 using a Fully Qualified Domain Name (FQDN) to resolve the public address of one or both routers.
Page 207: The Use Of A Fully Qualified Domain Name (Fqdn
10.5.6.1 DG834 Figure E-5: Addressing and Subnet Used for Examples Note: Product updates are available on the NETGEAR, Inc. web site at http://kbserver.netgear.com/DG834.asp. The Use of a Fully Qualified Domain Name (FQDN) Many ISPs (Internet Service Providers) provide connectivity to their customers using dynamic instead of static IP addressing.
Page 208: Step-By-Step Configuration
Click on the Dynamic DNS link on the left side of the Settings management GUI. This will take you to the Dynamic DNS Menu. party service in lieu of a permanent and unchanging IP and default password of password 202-10005-05, June 2005 http://192.168.0.1 with its . For this example we will NETGEAR VPN Configuration...
Page 209 • Password = <user's account password> Click Show Status. The resulting screen should show Update OK: good (see Figure E-7: Status Screen NETGEAR VPN Configuration Reference Manual for the ADSL Firewall Router DG834 Figure E-6) in the Advanced menu. 202-10005-05, June 2005 Figure E-7).
Page 210 Host and Domain Name = fvl328.dyndns.org • User Name = <user's account username> • Password = <user's account password> E-10 Figure E-8) in the Advanced menu. Figure E-8), configure with appropriate account Figure E-9), and then click Apply. 202-10005-05, June 2005 NETGEAR VPN Configuration...
Page 211 Reference Manual for the ADSL Firewall Router DG834 Figure E-9: Dynamic DNS Setup Screen NETGEAR VPN Configuration E-11 202-10005-05, June 2005...
Page 212 In Step 1, enter toFVL328 for the Connection Name. In Step 2, enter fvl328.dyndns.org for the remote WAN's IP address. In Step 3, enter the following: • IP Address = 172.23.9.1 • Subnet Mask = 255.255.255.0 E-12 202-10005-05, June 2005 7-20), being certain to NETGEAR VPN Configuration...
Page 213: Configuration Summary (Telecommuter Example
Verify whether the firmware is up to date, all of the addresses that will be necessary, and all of the parameters that need to be set on both sides. Assure that there are no firewall restrictions. NETGEAR VPN Configuration Reference Manual for the ADSL Firewall Router DG834...
Page 214: June
Figure E-12: Addressing and subnet used for telecommuter example Setting Up the Client-to-Gateway VPN Configuration (Telecommuter Example) Setting up a VPN between a remote PC running the NETGEAR ProSafe VPN Client and a network gateway involves the following two steps: •...
Page 215: Step 1: Configuring The Client-To-Gateway Vpn Tunnel On The Vpn Router At The Employer's Main Office
VPN Policies screen. Click Add Auto Policy to proceed and enter the information. NETGEAR VPN Configuration Reference Manual for the ADSL Firewall Router DG834 http://192.168.0.1 . Click the VPN Policies link in the main menu to display...
Page 216 (Remote NAT router must have Address Reservation set and VPN Passthrough enabled) Main Mode Fully Qualified Domain Name fromDG834G.com (in this example) Fully Qualified Domain Name toDG834G.com (in this example) 3DES 12345678 (in this example) 3600 202-10005-05, June 2005 NETGEAR VPN Configuration...
Page 217: Step 2: Configuring The Netgear Prosafe Vpn Client On The Remote Pc At The Telecommuter's Home Office
The PC must have a VPN client program installed that supports IPSec (in this case study, the NETGEAR VPN ProSafe Client is used). Go to the NETGEAR website (http://www.netgear.com) and select VPN01L_VPN05L in the Product Quick Find drop-down menu for information on how to purchase the NETGEAR ProSafe VPN Client.
Page 218 Double-click the system tray icon to open the Security Policy Editor. Add a new connection. Run the NETGEAR ProSafe Security Policy Editor program and create a VPN Connection. From the Edit menu of the Security Policy Editor, click Add, then Connection. A New Connection listing appears in the list of policies.
Page 219 In the Network Security Policy list, expand the new connection by double clicking its name or clicking on the “+” symbol. My Identity and Security Policy subheadings appear below the connection name. NETGEAR VPN Configuration Reference Manual for the ADSL Firewall Router DG834 ntgr Figure E-16.
Page 220 In this step, you will provide information about the remote VPN client PC. You will need to provide: — The Pre-Shared Key that you configured in the DG834. — Either a fixed IP address or a “fixed virtual” IP address of the VPN client PC. E-20 202-10005-05, June 2005 NETGEAR VPN Configuration...
Page 221 In the Internet Interface box, select Intel PRO/100VE Network Connection (in this example, your Ethernet adapter may be different) in the Name menu and enter 192.168.2.3 (in this example) in the IP Addr box. NETGEAR VPN Configuration Reference Manual for the ADSL Firewall Router DG834 202-10005-05, June 2005...
Page 222 This selection must match your selection in the VPN router configuration. In the Network Security Policy list on the left side of the Security Policy Editor window, expand the Security Policy heading by double clicking its name or clicking on the “+” symbol. E-22 202-10005-05, June 2005 NETGEAR VPN Configuration...
Page 223 In this step, you will provide the type of encryption (DES or 3DES) to be used for this connection. This selection must match your selection in the VPN router configuration. NETGEAR VPN Configuration Reference Manual for the ADSL Firewall Router DG834...
Page 224 After you have configured and saved the VPN client information, your PC will automatically open the VPN connection when you attempt to access any IP addresses in the range of the remote VPN router’s LAN. E-24 202-10005-05, June 2005 NETGEAR VPN Configuration...
Page 225 To perform a ping test using our example, start from the remote PC: Establish an Internet connection from the PC. On the Windows taskbar, click the Start button, and then click Run. NETGEAR VPN Configuration Reference Manual for the ADSL Firewall Router DG834 202-10005-05, June 2005...
Page 226: Monitoring The Vpn Tunnel (Telecommuter Example
To view information on the progress and status of the VPN client connection, open the DG834 ADSL Firewall Router Log Viewer. To launch this function, click on the Windows Start button, then select Programs, then DG834 ADSL Firewall Router, then Log Viewer. E-26 202-10005-05, June 2005 NETGEAR VPN Configuration...
Page 227 Note: While your PC is connected to a remote LAN through a VPN, you might not have normal Internet access. If this is the case, you will need to close the VPN connection in order to have normal Internet access. NETGEAR VPN Configuration Reference Manual for the ADSL Firewall Router DG834 202-10005-05, June 2005...
Page 228: Viewing The Vpn Router's Vpn Status And Log Information
To view this screen, click the Router Status link of the VPN router’s main menu, then click the VPN Status button. The VPN Status/Log screen for a connection is shown below: Figure E-26: VPN Status/Log screen E-28 202-10005-05, June 2005 NETGEAR VPN Configuration...
Page 229 Reference Manual for the ADSL Firewall Router DG834 To view the VPN tunnels status, click the VPN Status link on the right side of the main menu. Current VPN Tunnels (SAs) screen NETGEAR VPN Configuration E-29 202-10005-05, June 2005...
Page 230 Reference Manual for the ADSL Firewall Router DG834 E-30 NETGEAR VPN Configuration 202-10005-05, June 2005...
Page 231: Glossary
10BASE-T IEEE 802.3 specification for 10 Mbps Ethernet over twisted pair wiring. 100BASE-Tx IEEE 802.3 specification for 100 Mbps Ethernet over twisted pair wiring. 802.11b IEEE specification for wireless networking at 11 Mbps using direct-sequence spread-spectrum (DSSS) technology and operating in the unlicensed radio spectrum at 2.5GHz.
Page 232 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 233: Ip Address
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 234 Netmask A number that explains which part of an IP address comprises the network address and which part is the host address on that network. It can be expressed in dotted-decimal notation or as a number appended to the IP address.
Page 235: Subnet Mask
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 Protocol another so that they can determine minimum distance paths between sources and destinations.
Page 236 Windows Internet WINS. Windows Internet Naming Service is a server process for resolving Naming Service Windows-based computer names to IP addresses. If a remote network contains a WINS server, your Windows PCs can gather information from that WINS server about its local hosts. This allows your PCs to browse that remote network using Network Neighborhood.

NETGEAR DG834 ADSL Firewall Router DG834 DG834 Reference Manual

Chapter 1 About this Manual

Chapter 2 Introduction

Chapter 3 Connecting the Router to the Internet

Chapter 4 Protecting Your Network

Chapter 5 Managing Your Network

Chapter 6 Advanced Configuration

Chapter 7 Virtual Private Networking (Advanced Feature)

Chapter 8 Troubleshooting

Appendix A

Technical Specifications

Appendix B Network and Routing Basics

Appendix C Preparing Your Network

Appendix D Virtual Private Networking

Appendix E NETGEAR VPN Configuration

Glossary

IP Address

Subnet Mask

Quick Links

Troubleshooting

Need help?

Questions and answers

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Summary of Contents for NETGEAR DG834 ADSL Firewall Router DG834 DG834