Blocking msn & yahoo messenger

Protecting your Linux box
Burhan
Lance Naik
Posts: 32
Joined: Mon Oct 01, 2007 1:49 pm
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Blocking msn & yahoo messenger

Postby Burhan » Tue Jul 29, 2008 6:48 pm

AoA dears
I want to block msn , yahoo .i am using squid 2.6. Please tell me about it

x2oxen
Major General
Posts: 1114
Joined: Wed Aug 22, 2007 3:17 pm
Location: Faisalabad
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Block Msn Yahoo Through Squid

Postby x2oxen » Wed Jul 30, 2008 10:28 am

1) Install all messengers you can imagine - Yahoo! , MSN , AIM , ICQ and Trillian
2) Install packet sniffer like ethereal on workstation
3) now try running all messengers one at a time
4) now look for common signs on how to block them

For example AIM uses host login.oscar.aol.com
MSN Messenger uses MIME type containing "X-MSN-Messenger" string

Same applies to digital media players, spywares, viruses etc.

Never try to use these programs when they are blocked for common users.
Last edited by x2oxen on Wed Jul 30, 2008 10:31 am, edited 1 time in total.
Muhammad Usman
+92-321-6640501
Chemonics International
http://usmanpk.com

x2oxen
Major General
Posts: 1114
Joined: Wed Aug 22, 2007 3:17 pm
Location: Faisalabad
Contact:

Block Msn Yahoo Through Squid

Postby x2oxen » Wed Jul 30, 2008 10:30 am

Muhammad Usman

+92-321-6640501

Chemonics International

http://usmanpk.com


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