Second Life
Eric Traut talks (and demos) Windows 7 and MinWin


port 113 tcp & udp (auth port) for oidentd

HLDS ports

UDP 1200 (Friends Network)
UDP 27000 to 27015 (Gameport)
UDP 27020
TCP 27030 to 27039
TCP: 27015 (SRCDS Rcon port)


=

TCP/UDP 27000 - 27039
TCP/UDP 1200