Cisco 800 Port Forwarding

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.
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Hi richardbarlow,

same as other question   use the web interface

  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:


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richardbarlowAuthor Commented:
Thank you very much
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Networking Protocols

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