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Thread: How do I setup a simple port forward on Windows Server 2003?

  1. #1
    limr Guest

    How do I setup a simple port forward on Windows Server 2003?

    I have a windows server 2003 machine behind a firewall. The outside firewall
    has port 1000 forwarded to port 1000 on my windows server machine. I would
    like to forward everything that comes through on port 1000 on my windows
    server machine to port 3000 on another machine that is on the internal
    network somewhere. How do I do this?

  2. #2
    Tom Eirik Jensen Guest

    Re: How do I setup a simple port forward on Windows Server 2003?

    The question is, can the firewall you have, do this?
    Forward from eksample "146.245.3.2" outside, to "192.168.0.255" inside. And
    from 1000 to 3000.

  3. #3
    Phillip Windell Guest

    Re: How do I setup a simple port forward on Windows Server 2003?

    Technically there is no such thing as "port forwarding". That is a term
    "invented" by the Home User Market with respect to their "broadband routers"
    (which are not really "routers" either). Ports are Layer4 and they are just
    "addresses",...they are not routable addresses, therefore they cannnot be
    "forwarded" which is a Layer3 routing term. The actual action occurs
    primarily at Layer3 (the IP#) not at Layer4 (Ports). So you could logically
    call it IP Forwarding, except for the fact that the term "IP Forwarding" has
    already been established to mean normal regular IP Routing (hence my comment
    about "forwarding" = "routing" and can't apply to non-routable Layer4
    addresses)

    The technically accurate term would be Reverse NAT or Static NAT when the
    port number stays the same on both sides. If the port number changes that is
    called Port Addess Translation which can run over the top of (combined with)
    the Reverse NAT,...so then that gives you Reverse NAT with Port Address
    Translation (RNAT/PAT)

    Example:
    external internal
    RNAT = 23.234.12.31:1000 -->192.168.1.5:1000
    RNAT/PAT = 23.234.12.31:1000 -->192.168.1.5:1532

    In RRAS it is found in the section of the RRAS MMC called, I believe,
    Services.

  4. #4
    limr Guest

    Re: How do I setup a simple port forward on Windows Server 2003?

    Hi, the firewall is already forwarding port 1000 to my windows machine. I
    have the ability to change settings on the windows server machine so I just
    need to know how to forward port 1000 on my windows machine to port 3000 on a
    machine somewhere else.

  5. #5
    Phillip Windell Guest
    You don't.
    You go from the Firewall directly to the machien it is supposed to go to on
    the port it is supposed to go on.

    The views expressed, are my own and not those of my employer, or Microsoft,
    or anyone else associated with me, including my cats.

    Unfortunately I dont have access to the firewall. I just have the one port
    forwarded through.

    You have to have access to the firewall.

  6. #6
    Join Date
    Jan 2009
    Posts
    1

    Re: How do I setup a simple port forward on Windows Server 2003?

    OMG, I can not believe you got this much run around for such a simple question. YES this can be done Router<--->Server<---->Network. It is done everyday. No you do not need access to the firewall. because the port is already forwarded there. Windows server 2003 is acting as the router in this case or a bridge between his ISP box and his network.

    ANSWER:

    Administrative Tools >
    Routing and Remote Access >
    ServerName >
    IP Routing > NAT/Basic Firewall >
    Right-Click on your NIC-1 LAN >
    Properties >
    Services & Ports Tab >
    Add... >
    Enter Incoming Outgoing Port and IP of the workstation

  7. #7
    Join Date
    Jul 2010
    Posts
    1

    Re: How do I setup a simple port forward on Windows Server 2003?

    Cut the crap and get to the point. I wish everybody would answer like you.

  8. #8
    Join Date
    Mar 2012
    Posts
    1

    Re: How do I setup a simple port forward on Windows Server 2003?

    Simply visit http://support.microsoft.com/kb/555744

    example gateways port 3000 -> 192.168.0.255:1000
    work on gateway pc

    c:\>netsh
    netsh>interface portproxy
    netsh interface portproxy>add v4tov4 listenport=3000 connectaddress=146.245.3.2 connectport=1000 protocol=tcp

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