Remote Desktop Connection: Sometimes it works, sometimes it doesn't

Posted on 2006-05-07
Last Modified: 2013-11-21

I have a PC and a laptop at home sharing as DSL connecting using a wired router. I also have a work computer. All of these machines are setup to accept remote desktop connections (RDC).

RDC works from any of my home PC's to the other one, and from any of my home PC's to my work PC. IT doesn't work from my work PC to any of my PC's!

What could be the problem?

Question by:samir_tartir
    LVL 13

    Expert Comment

    Is port 3389 opened on your home router?  And, your home pc should have a fixed IP address, because it could change behind the router. also, are you sure your wan IP address from home stays the same?

    Author Comment

    Using a "netstat -an" command, port 3389 is listening, is this at the router? I think that the IP addresses are fixed.
    LVL 77

    Accepted Solution

    netstat -an shows the computer is "listening" ready for a connection but not the router.
    To test if port forwarding is configured on the router, log onto the computer you want to connect TO from the office, and go to  and test for port 3389 to see if the port is open.
    LVL 13

    Expert Comment

    But is 3389 being forwarded to a specific pc?  Look in your router setup forwarding rules.
    LVL 77

    Expert Comment

    by:Rob Williams
    You also mentioned you have more than on computer at home. Get one working first, but once successful, if you want to connect to more than one computer you will have to change the default listening port on the other computers. The following links explain how to do that:;en-us;306759
    Then once you have them changed you will have to change the router for multiple connections so for example the router's port forwarding would be configured as such:
    port 3389 =>
    port 3390 =>
    port 3391 =>
    When connecting from the office you would also have to specify the port in the remote desktop connection window  <ip address>:<port #>  such as
    LVL 77

    Expert Comment

    by:Rob Williams
    Thanks samir_tartir,

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