what is the internal and external port number of Messenger service in windows XP ?

Question

I will give the 10 Points to the corrext answer...

Answer 1

The above post is correct, however, the messenger service uses 135 for outgoing and inbound data about 95% of the time. Data services such as RPC and NetBIOS use the above ports also, so again 135 is most likely the only port needed to know on the messenger service if planning on blocking the service without actually turning off the service, for what ever reasons you may have.

Answer 2

The Messenger service uses UDP ports 135, 137, and 138; TCP ports 135, 139, and 445; and an ephemeral (that is, short-lived) port number greater than 1024. ...