What Port is it Using?

This is a discussion on What Port is it Using? within the Networking/Device Communication forums, part of the General Programming Boards category; Hello. I'm behind a router, and want to host a game, except i don't know what port the game is ...

  1. #1
    Set Apart -- jrahhali's Avatar
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    What Port is it Using?

    Hello.
    I'm behind a router, and want to host a game, except i don't know what port the game is trying to use, and so i can't forward the port through my router.
    Is there any way I can find out what port is trying to be used?
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  2. #2
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    Can't you force the game to run on a specific port which is predefined? Selecting a port at runtime may be a problem as it will keep changing every time you run the game. Accordingly you will have to change the access-lists on your router.

  3. #3
    Set Apart -- jrahhali's Avatar
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    >>Can't you force the game to run on a specific port which is predefined?
    Nope, that's the problem

    In addition, if this helps, the game uses UDP/IP server to connect instead of TCP/IP host. I'm not hugely familiar with UDP/IP, but could this be related to not being able to select a specific port?
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    try going to the command prompt and running
    netstat -a
    then start the game and get it to the point where it's waiting for a connection then ALT+tab back to command prompt and run
    netstat -a
    again and see wich listening ports have been added.
    or check the developers technical suport pages.

  5. #5
    Yes, my avatar is stolen anonytmouse's Avatar
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    Quote Originally Posted by Quantum1024
    try going to the command prompt and running
    netstat -a
    then start the game and get it to the point where it's waiting for a connection then ALT+tab back to command prompt and run
    netstat -a
    again and see wich listening ports have been added.
    or check the developers technical suport pages.
    Also, Windows recently added the -b option to netstat. This will give the process name responsible for each connection or listening port.
    netstat -b -a

  6. #6
    Set Apart -- jrahhali's Avatar
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    alright! worked great!
    turns out the port was 2000 .
    thanks guys.
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