Security Basics mailing list archives

RE: Blocking Outlook External POP/SMTP


From: "Christian Campbell" <ccampbell () brueggers com>
Date: Mon, 22 Mar 2010 09:30:53 -0400

Hello,

I'm looking for information on preventing/prohibiting users from
utilizing
Outlook (at work) to retrieve their personal email from Gmail, AOL,
Yahoo,
Comcast, Verizon, etc.

Looking for the following:

* Reasons why users should not be allowed to use Outlook on their work
computers to retrieve their personal email.

* Tools/techniques to block this type of traffic. It seems the most
common
ports are 110, 465, 587, 993, and 995. Are there others?

If you specifically want to keep users from configuring Outlook to add
accounts, use simply enforce group policy and/or create a customized
transform to lock down the configuration.  

Christian


Christian Campbell
Systems Engineer
 
Bruegger's Enterprises, Inc.

Universal: 802-735-0541
Desk: 802-652-9270
Cell: 802-734-5023
Fax: 802-660-4034

Email: ccampbell at brueggers dot com
 
PGP Public Key available via PGP keyservers or
http://www2.brueggers.com/pgp/ccampbell.html
 
"Computer Science is no more about computers 
than astronomy is about telescopes."
--E. Dijkstra


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