How to block msn messenger

[loveroots]

Hi I need help on how to block msn messenger on my user-lan I notice that msn messenger use a number of port including port 80 so if all the ports are block and port 80 is still open that would mean msn messenger would still communicate. any help with this matter would do

 

[nzwasp]

msn messenger isn't p2p so it must communicate with a particular server when users authenticate to it. You could find out which server and then create an access list to block access on port 80 to that server.

 

[watchguardmonkey]

put an acl on your router blocking port 80 and CHAT to or from this IP 64.4.15.61 will be a start, but there are a couple of others, I would connect to messenger from my own pc, then chek my router NAT translations and see what IP my pc is connecting to and on what port and then update my acl.

 

[plshlpme]

ive done aquick search and these ports are coming up for msn alot on other sites

TCP port 80
TCP port 1863
TCP port 6901 (possibly)
TCP ports 6891 to 6900.
UDP on ports 1503, 3389, 5004-65535

i imagine port 80 is for web messenger...
i dont have a list of msn's servers though

 

[VoIPGuyNSC]

If you use your own internal DNS servers, then DNS "poisoning" is the easiest. Once you find the hostname a particular application is trying to use, then you add that hostname into your own internal DNS server and point it to something null, such as the local loopback, 127.0.0.1. For example, AIM uses the oscar.aol.com line of servers.

John Lever
Telecommunications
Richland School District Two