| Feature | Port that is used |
| Sign in to the Messenger service | TCP 80, 443, 1863 |
Network Detection |
TCP 7001 UDP 9, 7001 |
| Audio | TCP 80, 443, 1863 |
| Webcam and Video Conversations | TCP 80 |
| File Transfer | TCP 443, 1863 |
| Sharing Folders | TCP 1863 |
Whiteboard and Application Sharing | TCP 1503 |
Remote Assistance | TCP 3389 |
Windows Live Call | TCP 443, 5061 |
| Games | TCP 80, 443, 1863 |
3/03/2012
Windows Live Messenger 所使用的Port
因為公司外派在國內外各工地處理IT工作，常常需要在專案工地辦公室針對Windows Live Messenger 做好控管工作，尤其是在防火牆的設定上需要特別開放或是封鎖使用的Port。依據Microsort Support的Artical ID :927847文件說明，在Firewall需要注意的Port如下。
