What ports MSN/Microsoft Messanger use?

[Marco Feindler]

Hi,
got problem mit connecting to other user behind a firewall. Sometimes it
work sometimes not. Then there is a SLIP Error.

Port 3389 ist free.

Are there any other Ports? Especially for the Whiteboard, Application and
Remote Feature?

thx

[Jonathan Kay [MVP]]

Greetings Marco,

The other ports Messenger uses are TCP ports, 1863 (for the Messenger server connection),
1503 (for whiteboard/application sharing), and 6891-6900 (for file transfers). As well, UDP
ports 5004-65535 are used for voice/video conversations -- and 3389 TCP (which you already
said you had) does Remote Assistance.
____________________________________________
Jonathan Kay
Windows MVP, Messenger
Associate Expert
http://www.microsoft.com/windowsxp/expertzone/
Messenger Resources - http://messenger.jonathankay.com


"Marco Feindler" > wrote in message
...
> Hi,
> got problem mit connecting to other user behind a firewall. Sometimes it
> work sometimes not. Then there is a SLIP Error.
>
> Port 3389 ist free.
>
> Are there any other Ports? Especially for the Whiteboard, Application and
> Remote Feature?
>
> thx
>
>