RE: how to block web messenger services

["Dixon, Wayne" <wcdixo () aurora lib il us>]

Short of a proxy to block the specific addresses, I myself, can't think
of anyway, since the web services connect to the back end server of the
IM services; and the only connection from your site to the web service
site is via HTTP, I can't think of any other way.

Wayne

 


-----Original Message-----
From: listbounce () securityfocus com [mailto:listbounce () securityfocus com]
On Behalf Of nawalmiftahi () gmail com
Sent: Tuesday, March 20, 2007 6:26 AM
To: security-basics () securityfocus com
Subject: how to block web messenger services


Hi all , 
   i am a security admin,yahoo messenger and other chat services are
blocked on our network, but we can access them thru web(ebuddy) , i
wanted to know how can we make sure that these chat services (yahoo
messenger, icq, msn messeger ) cannot be accessed through web as well ,
i mean how to block them. thanks