NETGEAR DG834GV v2 manual Troubleshooting a TCP/IP Network Using the Ping Utility

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Reference Manual for the Integrated ADSL Modem and Wireless Router with Voice, Model

Troubleshooting Internet Browsing

If your modem router can obtain an IP address but your computer is unable to load any Web pages from the Internet:

Your computer may not recognize any DNS server addresses.

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 modem router’s configuration, reboot your computer and verify the DNS address as described in “Preparing a Computer for Network Access” in Appendix B. Alternatively, you can configure your computer manually with DNS addresses, as explained in your operating system documentation.

Your computer may not have the modem router configured as its TCP/IP modem router.

If your computer obtains its information from the modem router by DHCP, reboot the computer and verify the modem router address as described in “Preparing a Computer for Network Access” in Appendix B.

Troubleshooting a TCP/IP Network Using the Ping Utility

Most TCP/IP terminal devices and routers contain a ping utility that sends an echo request packet to the designated device. The device then responds with an echo reply. Troubleshooting a TCP/IP network is made very easy by using the ping utility in your computer.

Testing the LAN Path to Your Router

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

To ping the router from a PC running Windows 95 or later:

1.From the Windows toolbar, click the Start button and select Run.

2.In the field provided, type Ping followed by the IP address of the router, as in this example:

ping 192.168.0.1

3.Click OK.

You should see a message like this one:

Pinging <IP address> with 32 bytes of data

Troubleshooting

8-7

v1.0, September 2006

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Contents NETGEAR, Inc Statement of Conditions TrademarksEuropean Union Statement of Compliance Bestätigung des Herstellers/Importeurs World Wide Web Certificate of the Manufacturer/ImporterVoluntary Control Council for Interference Vcci Statement Customer SupportDG834GV Product and Publication DetailsContents Chapter VoIP and Telephone Settings Chapter Advanced Configuration Troubleshooting the ISP Connection Adsl link Audience, Scope, Conventions, and Formats Chapter About This ManualManual Scope How to Print this ManualPrinting the Full Manual V1.0, September About the Modem Router Chapter IntroductionPowerful, True Firewall Key FeaturesEasy Installation and Management Standards-based Wireless NetworkingProtocol Support Auto Sensing and Auto Uplink LAN Ethernet Connections Virtual Private Networking VPNContent Filtering What’s in the Box? LED Descriptions Router’s Front PanelIntroduction Router’s Rear PanelConnecting the Router to the Internet Chapter Wireless Configuration Considerations for a Wireless NetworkObserve Performance, Placement, and Range Guidelines Implement Appropriate Wireless Security Understanding Wireless Settings Wireless Network Wireless Security Options Wireless Station Access ListField Description WPA-PSK Wi How to Set Up and Test Basic Wireless ConnectivityHow to Restrict Wireless Access to Your Network These options are discussed below V1.0, September How to Configure WEP Go to the WEP Security Encryption portion How to Configure WPA-802.1x How to Configure WPA-PSKConfiguring the Telephony Settings Chapter VoIP and Telephone SettingsSetting Up the Voice-over-IP Settings Setting Up the Pstn Settings Viewing the Voice Status Viewing the Call Log Line 1/LineLine 1/Line 2 Status V1.0, September Chapter Protecting Your Network How to Change the Built-In PasswordChanging the Administrator Login Timeout Configuring Basic Firewall Services Blocking Keywords, Sites, and ServicesHow to Block Keywords and Sites V1.0, September Firewall Rules Inbound Rules Port Forwarding Inbound Rule Example a Local Public Web Server Inbound Rule Example Allowing Videoconferencing Considerations for Inbound Rules Outbound Rules Service BlockingOutbound Rule Example Blocking Instant Messenger Order of Precedence for Rules How to Define Services ServicesHow to Set Your Time Zone Setting Times and Scheduling Firewall ServicesV1.0, September How to Schedule Firewall Services V1.0, September Backing Up, Restoring, or Erasing Your Settings How to Back Up the Configuration to a FileChapter Managing Your Network How to Erase the Configuration How to Restore the Configuration from a FileUpgrading the Modem Router’s Firmware How to Upgrade the Modem Router FirmwareV1.0, September Viewing Modem Router Status and Usage Statistics Network Management InformationMenu 3.2 Modem Router Status Fields This screen shows the following parametersVPI Router Statistics Fields This screen shows the following statisticsConnection Status Fields for PPPoA Viewing, Selecting, and Saving Logged Information Viewing Attached DevicesAn example of the logs file is shown below Security Log action buttons Security Log entry descriptionsSaving Log Files on a Server Activation and AdministrationExamples of Log Messages Selecting What Information to LogDropped Packets Enabling Security Event E-mail NotificationSend alerts and logs via email Running Diagnostic Utilities and Rebooting the Modem Router Enabling Remote Management Configuring Remote ManagementHttp//134.177.0.1238080 Configuring Advanced Security Chapter Advanced ConfigurationHow to Configure a Default DMZ Server Setting Up a Default DMZ ServerConnect Automatically, as Required Disable Port Scan and DOS ProtectionConfiguring LAN IP Settings Respond to Ping on Internet WAN PortMTU Size V1.0, September Use Router as Dhcp server DhcpV1.0, September Reserved IP addresses How to Configure LAN TCP/IP Settings How to Configure Dynamic DNS Configuring Dynamic DNSSelect the Use a dynamic DNS service check box Static Route Example Using Static RoutesHow to Configure Static Routes Universal Plug and Play UPnP V1.0, September V1.0, September Basic Functioning Chapter TroubleshootingTest LED Never Turns On or Test LED Stays On Power LED Not OnLAN or Internet Port LEDs Not On Troubleshooting the Web Configuration InterfaceTroubleshooting the ISP Connection Adsl linkInternet LED Blinking Amber Internet LED Off Obtaining a WAN IP AddressTroubleshooting PPPoE or PPPoA Troubleshooting a TCP/IP Network Using the Ping Utility Troubleshooting Internet BrowsingTesting the LAN Path to Your Router Testing the Path from Your Computer to a Remote Device Restoring the Default Configuration and Password Problems with Date and TimeUsing the Reset button V1.0, September Network Protocol and Standards Compatibility Appendix a Technical SpecificationsV1.0, September Document Link Appendix B Related DocumentsV1.0, September