have you tried blocking it on iptables? port 5101 is the one that msn msgr
is using...

>  -----Original Message-----
> From:         Georges J. Jahchan, Eng. [mailto:[EMAIL PROTECTED] 
> Sent: Saturday, March 01, 2003 4:20 PM
> To:   Squid-Users
> Subject:      [squid-users] Blocking Yahoo! & MSN Messengers thru Squid.
> 
> Trying to block Yahoo! Messenger & MSN Messenger without disallowing
> connections to TCP ports 443 & 563 or blocking Yahoo! Mail and HotMail in
> squid v2.5 stable1.
> Following is the interesting part in squid.conf:
> acl SSL_ports port 443 563
> acl CONNECT method CONNECT
> http_access deny CONNECT !SSL_ports
> In the access log, I see the following:
> 1046394571.141   9423 127.0.0.1 TCP_MISS/200 2755 CONNECT
> loginnet.passport.com:443 - DIRECT/65.54.228.253 -
> 1045515709.636  12619 127.0.0.1 TCP_MISS/200 15952 CONNECT
> login.yahoo.com:443 - DIRECT/64.58.76.98 -
> My guess is the Messengers would connect through any open port, but I have
> not tested it.
> Obviously, both are working. Blocking access to port 443 is out of the
> question as this disables access to secure web sites through squid.
> Blocking loginnet.passport.com and login.yahoo.com would mean login
> becomes impossible to HotMail and Yahoo! Mail.
> Any ideas on how to "surgically" block the Messengers without blocking
> Yahoo! Mail and HotMail in squid?
> TIA
> 
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