Messenger Server: port 1493, 1542, 1863, 1963, 80 TCP and 443 TCP

File Transfer/Sharing Folders: local: 1544 and 6891 – in fact 6720-65535 TCP from one source

Messenger Update: remote: 80 local: 1457

Remote Assistance (If available): 3389 TCP

Audio: local: , 1556, 11771, 13803 and generally 5004-65535 UDP

Remote Desktop and whiteboard: local/remote: 389, 522, 1503, 1720, and 1731 Launching Games: 80

Video Conference: TCP 9000-9999, 5004-65535 UDP + 80

Sign-In: remote: 443 local: 1484, 2400

Disable File Transfer :6681 , 6900

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