Network with Dhcp server | Lancom Systems 8011 VPN, 7111 VPN

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LANCOM 7111 VPN – LANCOM 8011 VPN

Chapter 3: Basic configuration

address x.x.x.254 ( “x” stands for the first three blocks in the IP address of the configuration PC).

Network with DHCP server

If a DHCP server is active in the LAN to assign IP addresses, an unconfigured LANCOM device will turn off its own DHCP server. It will change into DHCP client mode and will obtain an IP address from the DHCP server of the LAN. This IP address is not known at first. The accessibility of the device depends on the name resolution:

If there is a DNS server for name resolution in the LAN, which inter- changes the assignment of IP addresses to names with the DHCP server, then the device can be accessed by the name “LANCOM <MAC address>” (e.g. “LANCOM-00a057xxxxxx”).

The MAC address can be found on a label at the bottom of the device.

If there is no DNS server in the LAN, or it is not linked to the DHCP server, then the device can not be reached by the name. The following options remain in this case:

Figure out the DHCP-assigned IP address of the LANCOM by suitable tools and contact the device directly with this IP address.

Use LANconfig.

Connect a PC with a terminal program via the serial configuration interface to the device.

Starting the wizards in WEBconfig

Start your web browser (e.g. Internet Explorer, Netscape Navigator, Opera) and call the LANCOM router there:

http://<IP address of the LANCOM>

(or with a name as discribed above)

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Lancom Systems 8011 VPN Network with Dhcp server, Starting the wizards in WEBconfig, Or with a name as discribed above

Contents

Lancom 7111 VPN Lancom 8011 VPN Lancom Systems GmbH, Wuerselen Germany. All rights reserved Security settings Preface Model variants This documentation was compiled … Info@lancom.de Contents Linking two networks Providing dial-up accessSending faxes with Lancapi Troubleshooting Appendix Introduction Which use does VPN offer? Conventional network infrastructure Isdn Networking via the Internet Firewall Quality-of-Service / Traffic management Denial-of-Service ProtectionWhat does a router do? Areas of deployment for routers Internet access for a LAN e.g. via DSL or IsdnBridgehead to the WAN LAN to LAN coupling via VPN or Isdn What can your Lancom router do? Remote access to the company network via VPN or IsdnConventional via Isdn Lancom Quality of Service Package contents InstallationSystem preconditions Status displays Access to the LAN via the TCP/IP protocolIntroducing Lancom router Front side LED remains lit green Online LED indicates the overall status of all WAN ports Flashing Power LED but no connection? Lancom Data traffic via the WAN connection Connection status of the WAN connectionConnection status of Isdn S0 connection 7111 VPN, for both Isdn B channels with Lancom 8011 VPN Connection status of the serial configuration portLCD display Hardware installation Back of the unit Installation Software installation Starting Lancom setup Which software should you install? 1 TCP/IP settings Basic configurationWhich information is necessary? Information required for manual TCP/IP configuration New LAN-fully automatic configuration possibleConfigure manually nevertheless? IP address and netmask for the Lancom router Settings for the Isdn connection Configuration protectionSettings for the DSL connection Enable Dhcp server? LANconfig Instructions for LANconfigStart up LANconfig by clicking Start Programs Lancom Connect charge protection Complete the configuration with Finish Instructions for WEBconfig Network without Dhcp server Network with Dhcp server Starting the wizards in WEBconfigOr with a name as discribed above WEBconfig main menu will be displayed Entering the password in the web browser TCP/IP settings to workstation PCs IP address assignment via the Lancom router default IP address assignment via a separate Dhcp server Manual IP address assignment User name and password Setting up Internet accessDoes the setup wizard know your Internet provider? Additional information for unknown Internet providers Additional connection options Isdn dial-in number User name and passwordDynamic channel bundling Isdn only LANconfig Quick access to the setup wizards Complete the configuration with Apply Linking two networks Always configure both sidesSecurity aspects What information is necessary? General information Name of the remote station is needed for its identification Settings for the TCP/IP router DNS access to the remote LAN Settings for the IPX routerExtranet VPN Settings for NetBIOS routing Perform the configuration on both routers, one at a time Ping quick testing for TCP/IP connections Providing dial-up access Which information is required? Isdn calling line identity CLI Coupling Entry Settings for TCP/IP Settings for IPX WAN Dial-up via VPN Settings for the dial-in computerDial-up via Isdn Instructions for LANconfig Providing dial- up access Sending faxes with Lancapi Installation of the Lancom Capi fax modem Installation of the MS Windows fax service Select the option Printers and Faxes from the control panel Sending a fax Send a fax with the MS Windows fax serviceSend a fax with any given office application Sending faxes with Lancapi Security settings wizard Security settingsWizard for LANconfig Wizard for WEBconfig Firewall wizard Configuration under WEBconfig Security checklistRules Have you activated the Firewall? Have you assigned a password for the configuration?Have you permitted remote configuration? Do you make use of a ’Deny All’ Firewall strategy? Have you closed critical ports with filters? No WAN connection is established TroubleshootingProblems with the cabling? DSL data transfer is slow Increasing the TCP/IP window size under Windows Cable testingUnwanted connections under Windows XP LAN statistics Troubleshooting Performance data and specifications Appendix Rights for up to 16 administrators ISDN-S0interface Contact assignmentDSL interface Pin RJ45 socket Ethernet interfaces 10/100Base-T Configuration interface OutbandCE declaration of conformity Pin mini-DIN socket Numerics Connector cable Channel Data compression Dial-innumber InstallationIPX conventions IPX router Settings Connector cable LAN to LAN coupling 14, 15, 30 NetBIOS NetBIOS NetBIOS proxy Netmask Network segmentPackage contents Packet size adaption Password Security aspects Server Setup Specify MSN Temperature Time WEBconfig Settings 28 , 32Check connection