that's strange .. I portscanned myself, and the fs2-port is not open when hosting a game. the windows firewall is disabled, zonealarm is off and i don't have a hardware router. yet there is "no service" running at port 7808.
//edit: my games (both dedicated and serve&play) do show up on the fs2net games weblist, but not ingame. it is impossible to connect to them. //
i can run all kinds of servers with no problems, like webserver, ftp server, mysql server, half life 2 server, tachyon server, etc. the respective ports open, and clients can connect.
no such luck for fs2o so far ..

might this be a problem related to the changes in XP sp2 socket api?