Setting up an internal linksys wrt45g and external linksys befsr81

Discussion in 'Server Networking' started by Ash, Feb 20, 2006.

  1. Ash

    Ash Guest

    Hi there,
    i have a windows 2003 server with dual nics. i am trying to set up a wirless
    wrt54g on the internal subnet and a linksys befsr81 on the external nic. Is
    there a way to set up the internal user to access the internet with nat or
    should i use forwarding on the internal router.

    Ash, Feb 20, 2006
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  2. In
    Which router is currently offering NAT? You listed 3 of them including the
    2003 server. Is this multihomed server a DC?

    If I understand your infrastructure, tt seems like:

    Internet -> BEFSR81 -> 2003 Server -> WRT54G

    Is that correct?

    If so, why not just use the wireless WRT54G as you incoming router instead
    of the BEFSR81 and remove or disable one of the NICs on the server?


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    Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
    Microsoft MVP - Windows Server Directory Services
    Microsoft Certified Trainer
    Assimilation Imminent. Resistance is Futile.
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    Ace Fekay [MVP], Feb 20, 2006
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  3. Ash

    Ash Guest

    Thank you for answering. This is a sandbox environment for testing purposes.
    I have a dual nics on the 2003 server. One router (linksys BEFSR81)is on the
    external nic configured for internet access. The other router(linksys
    wrt54g) is on the internal nic for internal workstations and internal
    wireless access. I want to keep the internal network as far away as possible
    from intrusion from the outside. Is this possible? I have heard that its not
    a good idea to have a multihommed environment on windows 2003 server. Why
    ??...I would like my server to do NAT for both internal and external clients.
    Ash, Feb 23, 2006
  4. In
    Actually multihomed DCs is NOT recommended because it's effect on AD
    registration in DNS.

    Honestly, on the same token, I would not use a Windows machine for a router
    anyway. It's Windows. Costly. Routers are much cheaper and are dedicated.
    Same with NAT devices, they are essentially specialized routers that route
    AND translate headers at Layer 4 of the OSI.

    You can do that. If you want to route internally, you need to understand how
    routing works. NAT translates, where routers purely send the packet on with
    translating anything. If you have three segemented networks, it's advised
    the edge router is your NAT device and the internal routers are just
    routing. To allow access from the internal segments, you need to configure
    static routes. Check this example to see what I mean and apply it to your

    Ace Fekay [MVP], Feb 24, 2006
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