Blocking windows messenger XP

[jpcastro]

I want to deny access to messeneger. I've tried blocking port 1863 but when messenger finds this port blocked, it start a connection through port 80.

Obviusly I can't block port 80.

Any Ideas?

[ddemers]

Block access to gateway.messenger.hotmail.com like so:

access-l acl_in deny ip any host 64.4.13.170

access-l acl_in permit tcp any any eq www

[jpcastro]

Thank you very much, it works perfectly.

For reference:

Messenger first try 64.4.13.38:1863 then try 64.4.13.170:80