Security Basics mailing list archives
RE: Blocking Instant Messaging Applications
From: "Aditya Deshmukh" <aditya.deshmukh () online gateway strangled net>
Date: Thu, 24 Nov 2005 08:03:42 +0530
At the PIX or firewall, or wherever your ACLs are kept, block incoming or outgoing traffic to oscar.aol.com, the messenger login servers, trillian, yahoo, etc etc etc. You should be able to pull those from the connection logs. The clients initiate contact with those authentication services, and if they can't reach them, then they cannot logon and use them. Cleanest and easiest to me. If people cant logon to the service, then you have rendered it useless.
What about http proxies that can be used as a hop ? Most of the chat programs can use a HTTP proxy I think the best way would be to block packets contains the connect string as well ________________________________________________________________________ Delivered using the Free Personal Edition of Mailtraq (www.mailtraq.com)
Current thread:
- Blocking Instant Messaging Applications Gaddis, Jeremy L. (Nov 21)
- RE: Blocking Instant Messaging Applications Murad Talukdar (Nov 22)
- <Possible follow-ups>
- RE: Blocking Instant Messaging Applications Nick Duda (Nov 21)
- RE: Blocking Instant Messaging Applications Murad Talukdar (Nov 22)
- RE: Blocking Instant Messaging Applications Aditya Deshmukh (Nov 24)
- Re: Blocking Instant Messaging Applications Gaddis, Jeremy L. (Nov 22)
- RE: Blocking Instant Messaging Applications Murad Talukdar (Nov 22)
- Re: Blocking Instant Messaging Applications Neksus (Nov 21)
- Re: Blocking Instant Messaging Applications Alloishus BeauMains (Nov 22)
- Re: Blocking Instant Messaging Applications Gaddis, Jeremy L. (Nov 22)
- RE: Blocking Instant Messaging Applications Aditya Deshmukh (Nov 24)
- Re: Blocking Instant Messaging Applications Gaddis, Jeremy L. (Nov 22)
- RE: Blocking Instant Messaging Applications Alexis Villagra - VILSOL LatinAmerica (Nov 22)
- Re: Blocking Instant Messaging Applications Alloishus BeauMains (Nov 22)
- RE: Blocking Instant Messaging Applications Collier, Simon (Nov 22)
- RE: Blocking Instant Messaging Applications Aditya Deshmukh (Nov 24)
- RE: Blocking Instant Messaging Applications Hartmann (Nov 25)
- RE: Blocking Instant Messaging Applications Aditya Deshmukh (Nov 24)
- RE: Blocking Instant Messaging Applications Beauford, Jason (Nov 23)
- RE: Blocking Instant Messaging Applications Murad Talukdar (Nov 24)
- Re: Blocking Instant Messaging Applications Neksus (Nov 23)