We got starcraft broodwar working behind a router at home with our ADSL connection. we have 2 computers connected to the router (a HUB switch connects the 2 computers, the ADSL modem and the router). port fowarding of TCP and UDP port 6112 (required by starcraft) is activated. the router runs under suse linux 7.0 with 2.2.16 kernel. the problem is, when i play on battle.net and join a game from one of the 2 computers (of course the computer to which the port is forwarded), there is always a lag, in the chatroom and during game-play. if i create the game, no lagging occures whatsoever. without the router, this problem does not occur, everything is at normal. how can i fix the problem? and why does it occur? other internet activities (browsing, unreal tournament, quake 3, icq, etc.) function perfectly with and without router. thank you very much and a happy new year to all of you! alexander rogg no keys port forwarding was activated like this: ipmasqadm portfw -a -P tcp -L [external (internet) IP address of router] 6112 -R [internal IP address of starcraft-playing-computer] 6112 AND (for UDP packets) ipmasqadm portfw -a -P udp -L [external (internet) IP address of router] 6112 -R [internal IP address of starcraft-playing-computer] 6112

Subject: How to get Starcraft BattleNet to work through a Firewall / Proxy I started looking aroung on the internet a month ago for answers on how to get Starcraft to work on Battle Net through a Firewall or Proxy. The message displayed by Starcraft is something like "Either your Internet Connection is very poor, or is not processing UDP packets through port 6112." Well, opening 6112 didn't help, and opening 6112-6119 didn't help, and opening port 4000 didn't help. Blizzard's web site says in no uncertain terms - Don't call us about firewall problems. So I traced the UDP packets that were being blocked by the firewall and came up with 3 port ranges that were not documented by Blizzard. UDP Port 1716 came up regularly, as did port 32798. Then a range of ports around 61540 and another group in the 64090 (and up) range appeared. I can tell you that this works, but it is overkill. I did not have the patience to eliminate every port in order to tighten security. And I have no idea if any of these ports comprise a security risk. Open port TCP 4000 for input and output. Open port UDP 4000 for input and output. Open ports TCP 6111 through 6119 for input and output. Open ports UDP 6111 through 6119 for input and output. Open ports UDP 1700-1800 for input and output. Open ports UDP 32000-33000 for input and output. Open ports UDP 61000-65000 for input and output. If you are running an ipchains linux firewall, here's a chunk of code that may be helpful in your firewall script. #---- Enable Starcraft ANYWHERE = "any/0" # TCP / UDP Port 4000 ipchains -A input -i $EXTERNAL_INTERFACE -p tcp -s $ANYWHERE -d $ANYWHERE 4000 -j ACCEPT ipchains -A output -i $EXTERNAL_INTERFACE -p tcp -s $ANYWHERE 4000 -d $ANYWHERE -j ACCEPT ipchains -A input -i $EXTERNAL_INTERFACE -p udp -s $ANYWHERE -d $ANYWHERE 4000 -j ACCEPT ipchains -A output -i $EXTERNAL_INTERFACE -p udp -s $ANYWHERE 4000 -d $ANYWHERE -j ACCEPT # TCP / UDP Ports 6111-6119 ipchains -A input -i $EXTERNAL_INTERFACE -p tcp -s $ANYWHERE -d $ANYWHERE 6111:6119 -j ACCEPT ipchains -A output -i $EXTERNAL_INTERFACE -p tcp -s $ANYWHERE 6111:6119 -d $ANYWHERE -j ACCEPT ipchains -A input -i $EXTERNAL_INTERFACE -p udp -s $ANYWHERE -d $ANYWHERE 6111:6119 -j ACCEPT ipchains -A output -i $EXTERNAL_INTERFACE -p udp -s $ANYWHERE 6111:6119 -d $ANYWHERE -j ACCEPT # UDP Input Ports 1700-1800, 32000-33000, 61000-65000 ipchains -A input -i $EXTERNAL_INTERFACE -p udp -s $ANYWHERE -d $ANYWHERE 1700:1800 -j ACCEPT ipchains -A output -i $EXTERNAL_INTERFACE -p udp -s $ANYWHERE 1700:1800 -d $ANYWHERE -j ACCEPT ipchains -A input -i $EXTERNAL_INTERFACE -p udp -s $ANYWHERE -d $ANYWHERE 32000:33000 -j ACCEPT ipchains -A output -i $EXTERNAL_INTERFACE -p udp -s $ANYWHERE 32000:33000 -d $ANYWHERE -j ACCEPT ipchains -A input -i $EXTERNAL_INTERFACE -p udp -s $ANYWHERE -d $ANYWHERE 61000:65000 -j ACCEPT ipchains -A output -i $EXTERNAL_INTERFACE -p udp -s $ANYWHERE 61000:65000 -d $ANYWHERE -j ACCEPT #---- End Enable Starcraft