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TCP/IP & Firewalls - Help Please

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  • TCP/IP & Firewalls - Help Please

    Hi all

    I finally got my friend hooked on playing AC. We played a few times over the summer when he was over. We had used a crossover cable for a direct connection back then, and it worked great. Now he's on the other side of the state, so a direct dialup connection between the two computers is impossible (phone bill).

    So we tried tcp/ip. It doesn't matter if it's me or if it's him hosting. We both cannot find the hosted game. Now I did a little poking around last night and found out that we both have firewalls built into the router (mine is a linksys and his is a d-link). So I do a lot of searching all over this site and the internet, but I can't seem to find any mention at all for which ports I need to set for port forwarding. Anybody have any luck getting tcp/ip games to work behind firewalls? Any help would be appreciated.


  • #2
    Mhh if noone answers you should try asking in the Mutliplaying section.

    but I took a look arround and found over this
    this Page:
    which states:
    11.1 Behind a Firewall/Masq Server

    There should be no difficulties joining a game from behind a firewall or while being IP masqueraded.
    Hosting from behind a firewall is a little tricker. Basically, the masqing firewall needs to include port forwarding. For details, try the HOWTO (

    Assuming that everything is configured as required, you need to forward the necessary UDP ports from your firewall to your internal machine. The examples below assume a 2.2.x kernel.

    ipmasqadm portfw -a -P udp -L 32292 -R 32292
    ipmasqadm portfw -a -P udp -L 32293 -R 32293
    ipmasqadm portfw -a -P udp -L 32294 -R 32294
    ipmasqadm portfw -a -P udp -L 32295 -R 32295
    ipmasqadm portfw -a -P udp -L 32296 -R 32296

    Here, is the external address on the firewall. is the internal address of my local machine. 32292-32296 are the ports used by SMAC.
    Special thanks to Walt, from the SMAC list, for this tip!
    On a second Look I doubt this does help. (Lx)
    Curse your sudden but inevitable betrayal!