Lancom Systems 7111 VPN, 8011 VPN manual Troubleshooting

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LANCOM 7111 VPN – LANCOM 8011 VPN

Chapter 9: Troubleshooting

tested (e.g. “DSL1” or “LAN-1”). Pay attention to the correct spelling of the interfaces. Start the test for the specified interface by clicking on Execute.

EN

Change then to menu item Expert configuration Status LAN statis-

tics Cable test results. The results of the cable test for the individual interfaces are show up in a list.

The following results can occur:

OK: Cable plugged in correctly, line ok.

open with distance “0m”: No cable plugged in or interruption within less than 10 meters distance.

open with indication of distance: Cable is plugged in, but defect (short- circuited) at the indicated distance.

Impedance error: The pair of cables is not terminated with the correct impedance at the other end.

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Contents Lancom 7111 VPN Lancom 8011 VPN Lancom Systems GmbH, Wuerselen Germany. All rights reserved Preface Security settingsModel variants Info@lancom.de This documentation was compiled …Contents Providing dial-up access Linking two networksSending faxes with Lancapi Appendix TroubleshootingWhich use does VPN offer? IntroductionIsdn Conventional network infrastructureNetworking via the Internet Firewall Denial-of-Service Protection Quality-of-Service / Traffic managementWhat does a router do? Bridgehead to the WAN Internet access for a LAN e.g. via DSL or IsdnAreas of deployment for routers LAN to LAN coupling via VPN or IsdnRemote access to the company network via VPN or Isdn What can your Lancom router do?Conventional via Isdn Lancom Quality of Service Installation Package contentsSystem preconditions Introducing Lancom router Access to the LAN via the TCP/IP protocolStatus displays Front sideOnline LED indicates the overall status of all WAN ports LED remains lit greenLancom Flashing Power LED but no connection?Connection status of the WAN connection Data traffic via the WAN connectionConnection status of Isdn S0 connection Connection status of the serial configuration port 7111 VPN, for both Isdn B channels with Lancom 8011 VPNLCD display Back of the unit Hardware installationInstallation Starting Lancom setup Software installationWhich software should you install? Basic configuration 1 TCP/IP settingsWhich information is necessary? Configure manually nevertheless? New LAN-fully automatic configuration possibleInformation required for manual TCP/IP configuration IP address and netmask for the Lancom routerSettings for the DSL connection Configuration protectionSettings for the Isdn connection Enable Dhcp server?Start up LANconfig by clicking Start Programs Lancom Instructions for LANconfigLANconfig Connect charge protectionComplete the configuration with Finish Network without Dhcp server Instructions for WEBconfigStarting the wizards in WEBconfig Network with Dhcp serverOr with a name as discribed above WEBconfig main menu will be displayed Entering the password in the web browser IP address assignment via the Lancom router default TCP/IP settings to workstation PCsManual IP address assignment IP address assignment via a separate Dhcp serverDoes the setup wizard know your Internet provider? Setting up Internet accessUser name and password Additional information for unknown Internet providersIsdn dial-in number User name and password Additional connection optionsDynamic channel bundling Isdn only Complete the configuration with Apply LANconfig Quick access to the setup wizardsAlways configure both sides Linking two networksSecurity aspects General information What information is necessary?Name of the remote station is needed for its identification Settings for the TCP/IP router Settings for the IPX router DNS access to the remote LANExtranet VPN Settings for NetBIOS routing Perform the configuration on both routers, one at a time Ping quick testing for TCP/IP connections Which information is required? Providing dial-up accessCoupling Entry Isdn calling line identity CLISettings for IPX Settings for TCP/IPWAN Settings for the dial-in computer Dial-up via VPNDial-up via Isdn Instructions for LANconfig Providing dial- up access Sending faxes with Lancapi Installation of the Lancom Capi fax modem Select the option Printers and Faxes from the control panel Installation of the MS Windows fax serviceSend a fax with the MS Windows fax service Sending a faxSend a fax with any given office application Sending faxes with Lancapi Security settings Security settings wizardWizard for LANconfig Firewall wizard Wizard for WEBconfigSecurity checklist Configuration under WEBconfigRules Have you permitted remote configuration? Have you assigned a password for the configuration?Have you activated the Firewall? Do you make use of a ’Deny All’ Firewall strategy?Have you closed critical ports with filters? Problems with the cabling? TroubleshootingNo WAN connection is established DSL data transfer is slowUnwanted connections under Windows XP Cable testingIncreasing the TCP/IP window size under Windows LAN statisticsTroubleshooting Appendix Performance data and specificationsRights for up to 16 administrators DSL interface Contact assignmentISDN-S0interface Pin RJ45 socketCE declaration of conformity Configuration interface OutbandEthernet interfaces 10/100Base-T Pin mini-DIN socketNumerics IPX conventions IPX router Settings InstallationConnector cable Channel Data compression Dial-innumber Connector cable LAN to LAN coupling 14, 15, 30Package contents Packet size adaption Password NetBIOS NetBIOS proxy Netmask Network segmentNetBIOS Security aspects Server Setup Specify MSNSettings 28 , 32 Temperature Time WEBconfigCheck connection