Monkis#8156
Firewalls
Note that if you have a firewall and want to play online, the following TCP/IP ports
must be open in the outbound direction:
HTTP 80 TCP/IP
HTTPS 443 TCP/IP
MsgConn/IM 13500-13599 TCP/IP
Roomsvr 26200-26299 TCP/IP
The following UDP ports must be opened for game packets, for the outbound and inbound connections
Game Packets 3658 UDP