I've noticed before when looking at lobbys that some people were just a grey square with no bars but put it down to bad connections. Now i'm playing in a league though and on 2 occasions the person im playing has been grey. I've had to turn off my router firewall and local firewall to play them.
My firewall is set up to allow anything on port 5730 through if it's coming to my PC and port forwarding then forwards on that port.
Zone Alarm allows incoming to port 5730 from port 5730 and port 3479 (couldnt log in without 3479 allowed).
As far as i know that should be enough but it obviously isn't. There must be traffic on different ports but i can't find any other info.
My firewall is set up to allow anything on port 5730 through if it's coming to my PC and port forwarding then forwards on that port.
Zone Alarm allows incoming to port 5730 from port 5730 and port 3479 (couldnt log in without 3479 allowed).
As far as i know that should be enough but it obviously isn't. There must be traffic on different ports but i can't find any other info.