Cisco 800 Port Forwarding

Posted on 2006-04-09
Last Modified: 2013-11-29
I need to get a Cisco 800 to forward some traffic into a server. One port I need forwarding is 3389. The target server is & the WAN IP is (example only).

I have found some instructions on how to do this and believe the following command line will do the job:

ip nat inside source static tcp 3389 3389

Problem is, I don't know how to enter this command into the router. I can log on in a Telnet session and at the Router> prompt I enter the line above but the router retorts with Invalid Input Detected and indicates the beginning of the line as the problem.
Question by:richardbarlow
    LVL 48

    Expert Comment

    Hi richardbarlow,

    same as other question   use the web interface

    LVL 20

    Accepted Solution

      Here's how to do this via telnet:
    At the "Router>" prompt, type: enable [ENTER]
      (then enter enable password)
    Router#config t  [ENTER]
    Router(config)#ip nat inside source static tcp 3389 3389
    Router#clear ip nat trans * [ENTER]  <- note: include the asterisk

      Info on CLI basics:


    Author Comment

    Thank you very much

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