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    Checking external port question

    Discussion in 'Networking and Wireless' started by Spider_3000, Aug 19, 2007.

  1. Spider_3000

    Spider_3000 Notebook Consultant

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    Hi. I like to host multiplayer games such as Counter-Strike online for my friends to play. However I have a problem finding out my port number for the game. I can find out my external IP using websites or whatever.
    My current setup is this: a PC connected using wire to a modem, which then connects through the telephone line to my ISP. I got ADSL and I'm staying in Thailand. I'm not sure if it's my modem's or ISP's fault...
    Anyways, I already forwarded the right port (27015 for cs I believe, but it is the same everytime). So in theory my game's IP should be [external IP]:27015, right? However when I ask my friends to search for the server, which is currently the only way of finding it, they tell me the IP, and everytime it is a different port.
    So my question is if there is a program or website available that could for example check my external ports and report which are open, or check if there is a cs game running on any port.
    Also note that the function which searches an IP for any running games in Steam's add favorites tool can't find my game when I give my friends my external IP. Also I've posted this question about a year ago on the Steam forums but they haven't answered. I figured you people should know a solution.
    Thanks.
     
    Spider_3000, Aug 19, 2007
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  2. grateful

    grateful Notebook Evangelist

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    search google for TCPDUMP, it outputs a lot of information but you can narrow it down nicely with restrictions and outputs to logs.
     
    grateful, Aug 21, 2007
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  3. Spider_3000

    Spider_3000 Notebook Consultant

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    I can't figure out how to use it. Is there any other method?
     
    Spider_3000, Aug 21, 2007
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  4. grateful

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    grateful, Aug 22, 2007
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  5. Spider_3000

    Spider_3000 Notebook Consultant

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    So in theory I should get an IP with port 27015 when I got dedicated server running right? Using the PID (netstat -n -o) I've identified steam going over port 3289 and there's an unidentified process over 4030, could any of those be it? Note: all ports are from the local address column... should i use foreign address?
     
    Spider_3000, Aug 22, 2007
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  6. grateful

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    it will be in the local side, any port you have open
     
    grateful, Aug 22, 2007
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  7. Spider_3000

    Spider_3000 Notebook Consultant

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    OK. Thanks a lot. I will try next time we play a game and ask them.
     
    Spider_3000, Aug 22, 2007
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