problem with setting up an internet connection on domain controller

Posted on 2004-11-11
Last Modified: 2010-03-18
I have a windows 2000 server as a domain controller with 2 network cards in. Card 1 is connected to a switch and uses static IP, card 2 is connected to a broadband router (lucent access point 300) via a crossover cable with static ip on a different subnet mask and range.  If I disable the LAN (card 1) then I have no problem accessing the internet using iexplorer, if I enable the LAN connection Internet access sometimes works but most of the time not.  Should I have some routing set up somewhere.
Question by:andrewbarnett
    LVL 8

    Expert Comment

    do you have a default gateway setup on LAN (card 1)?  if so remove it...
    LVL 8

    Expert Comment

    the server should only have a default gateway on the LAN card that connects to the internet
    LVL 41

    Accepted Solution

    this refers to 98. but applies
    multi homed machines;EN-US;Q262397

    When two network adapters are present in a computer (multihomed), a default gateway should only be assigned

    to one of the network adapter's TCP/IP properties. If one of the network adapters is used to connect

    to the Internet, the default gateway should be assigned to that network adapter. In many cases, the

    default gateway, as well as the other necessary TCP/IP information is assigned automatically by the

    Internet Service Provider by using Dynamic Host Configuration Protocol (DHCP). This can be confirmed

    by using the IP Configuration utility (Winipcfg.exe) to view the TCP/IP properties for the network adapter

    you are using to connect to the Internet.

    For the network adapter that is connected only to the Local Area Network (LAN), such as a home or corporate

    network, a static routing entry must be entered into the computer's routing table if the computer needs

    to obtain access to network resources across a router or multiple routers. For example, if the router

    interface on the same subnet has an IP address of and the router is connecting the

    network to a network, the following command would need to be entered either at a command

    prompt within Windows or from a batch file:


    This command instructs Windows to send all traffic that is destined for the network to the interface on the router. To verify that the ROUTE ADD command was successful, use the ROUTE

    PRINT command to view the current routing table. If multiple routers are being used on the LAN segment,

    a separate ROUTE ADD is needed for each router.

    Note that the routing entry is not persistent in Windows 98/95, even with the -p switch, and is lost

    after you restart the computer. To have this entry automatically added for every Windows session, create

    a batch file with the necessary ROUTE ADD command(s) and place it in the Windows StartUp folder to be

    executed each time Windows starts.

    If DHCP is used to assign IP addresses on the LAN, the DHCP server should be configured to not provide

    a default gateway.


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