Lancom 800+ User Manual

Also see for 800+: Installation guide

Contents

Lancom 800+ User Manual Manual pdf 50 page image

LANCOM 800+ – LANCOM DSL/I- 10+ – LANCOM DSL/I- 1611 Office Chapter 5: Linking two networks50ENDNS access to the remote LANThanks to DNS, it is not only possible to access remote computers in a TCP/IPnetwork via their IP address, but also by using freely defined names.For example, the computer with the name 'pc1.branch.company' (IP10.0.2.10) will not only be able to access the server of the head office via itsIP address, but also via its name, 'server.head.company'. The only precondi-tion: the domain of the remote network in the wizard must be specified.The domain can only be specified in the LANconfig wizard. InWEBconfig, enter the appropriate information later in the expert con-figuration. For more information, see the LANCOM reference manual.Extranet VPNFinally, one can decide whether access to local stations is permitted. In this'Extranet VPN' operating mode, the IP stations do not expose their IP addressto the remote LAN, rather they will be hidden behind the VPN gateway's IPaddress instead.Therefore, the stations within the remote LAN cannot access IP stations in theother LAN directly. For example, if a headquarters. LAN in 'Extranet VPN'mode is hidden behind its gateway's address '10.10.2.100', and on of its IPstations (e.g. '10.10.2.13') accesses the IP station '10.10.1.2' of the branchoffice, then the branch office.s IP stations deems to be a accessed by'10.10.2.100'. The true IP address of the accessor ('10.10.2.13') is hidden.If two LANs shall be coupled in Extranet mode, please ensure to enter the'outbound' Extranet IP address of the remote site, not its Intranet address.According to the example, this was '10.10.2.100'. The appropriate netmaskfor the Extranet IP address would be '255.255.255.255' then.5.1.3 Settings for the IPX routerThe coupling of IPX networks via VPN cannot be configured using thewizard. It can only be set up in the expert configuration. For details,please see the reference manual.Coupling two typical IPX networks to form a WAN requires three IPX networknumbers: for the LAN of the head office