Re: filtering MSN traffic

["George J. Jahchan" <securityfocus () compucenter org>]

Blocking MSN is not so simple. The client can be configured to
encapsulate the traffic in http packets to pass through a firewall that
blocks tcp access to port 1863.

In that case you need to force web traffic through a proxy that filters
messenger traffic. Usually that includes MSN, Yahoo!, ICQ and AIM. You
can use open source (squid + dansguardian) or commercial solutions to
perform URL filtering.

-----Original Message-----
From: Edjenguele <christian.edjenguele () owasp org>
Reply-To: christian.edjenguele () owasp org
To: Juan B <juanbabi () yahoo com>
Cc: security-basics () securityfocus com
Subject: Re: filtering MSN traffic
Date: Thu, 09 Jul 2009 18:50:50 +0200

Hi, this could simply done with iptables (if you are using linux distro 
;) ) by filtering the MSN TCP port 1863 or other for some web messenger.

Juan B wrote:
> Hi,
>
> I am looking for a product, I prefer open source to filer msn traffic, I just want to verify that no one of the 
> employees can receive files trow msn from put of the lan and that links cant be sended.
>
> any recommendations?
>
> thanks a lot !
>
> juan
>
>
>       
>
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------------------------------------------------------------------------
Securing Apache Web Server with thawte Digital Certificate
In this guide we examine the importance of Apache-SSL and who needs an SSL certificate.  We look at how SSL works, how 
it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, 
install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are 
highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.

http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1
------------------------------------------------------------------------