From: Harper, Patrick (patrick.harperphns.com)
Date: Tue Apr 13 2004 - 16:05:29 CDT

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from a quick Google search (I have done this before but I did not
remember off the top of my head)
 
Yahoo Messenger
 
cs1.yahoo.com
cs2.yahoo.com
cs3.yahoo.com
 
port
5050 (I would just block them in general instead of worrying about
ports)

 
------------
 
AIM
 
205.188.3.160
205.188.7.176
205.188.7.172
205.188.7.168
205.188.7.164
205.188.5.208
205.188.5.204
205.188.3.176
 
-------------
MSN Messenger
 
messenger.hotmail.com
TCP/1863

Patrick S. Harper | CISSP RHCT MCSE
Information Security Engineer
patrick.harperphns.com

  _____

From: Rowland, Krisa W ERDC-ITL-MS Contractor
[mailto:Krisa.W.Rowlanderdc.usace.army.mil]
Sent: Tuesday, April 13, 2004 2:54 PM
To: Harper, Patrick; snort-userslists.sourceforge.net
Subject: RE: [Snort-users] Chat/IM

Yes - I know it's wishful thinking - but just wondering if anyone had
had any luck doing this.

        -----Original Message-----
        From: Harper, Patrick [mailto:patrick.harperphns.com]
        Sent: Tuesday, April 13, 2004 3:53 PM
        To: Rowland, Krisa W ERDC-ITL-MS Contractor;
snort-userslists.sourceforge.net
        Subject: RE: [Snort-users] Chat/IM
        
        
        outbound firewall rules?
         

        Patrick S. Harper | CISSP RHCT MCSE
        Information Security Engineer
        patrick.harperphns.com

  _____

        From: Rowland, Krisa W ERDC-ITL-MS Contractor
[mailto:Krisa.W.Rowlanderdc.usace.army.mil]
        Sent: Tuesday, April 13, 2004 1:26 PM
        To: 'snort-userslists.sourceforge.net'
        Subject: [Snort-users] Chat/IM
        
        

        Does anyone have an effective way of blocking chat/IM?

        Krisa Rowland
        ERDC Information Assurance Team
        (SAIC Contractor)
        3909 Halls Ferry Rd., Bldg. 8000
        Vicksburg, MS 39180
        601-634-2493
        krisa.w.rowlanderdc.usace.army.mil

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