Messenger Port Numaraları 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:

https://www.hakanuzuner.com/messenger-port-numaralari/