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 From:  "Federico Krum" <federico at thehost dot com dot ar>
 To:  <m0n0wall at lists dot m0n0 dot ch>
 Subject:  RE: [m0n0wall] Block msn and yahoo messenger
 Date:  Wed, 12 Jan 2005 10:18:50 -0300
Blocking these traffic worked for me.

  Proto Source Port Destination Port Description  
  TCP/UDP  irc  *  *  6660 - 7000  6667 
  TCP/UDP  irc  113  *  *  113 irc     
  TCP/UDP  yahoo  *  216.155.193.166/24  *  216.155.193.166 
  TCP/UDP  msn  *  216.178.160.34/24  *  216.178.160.34     
  TCP/UDP  msn  *  213.249.102.94/24  *  213.249.102.94     
  TCP/UDP  msn  *  213.199.154.54/24  *  213.199.154.54     
  TCP/UDP  msn  *  213.199.154.11/24  *  213.199.154.11     
  TCP/UDP  msn  *  207.68.178.239/24  *  207.68.178.239     
  TCP/UDP  msn  *  207.46.110.254/24  *  207.46.110.254     
  TCP/UDP  msn  *  207.46.110.48/24  *  207.46.110.48     
  TCP/UDP  msn  *  207.46.107.33/24  *  207.46.107.33     
  TCP/UDP  msn  *  207.46.106.28/24  *  207.46.106.28     
  TCP/UDP  msn  *  195.33.103.52/24  *  195.33.103.52     
  TCP/UDP  msn  *  194.130.106.132/24  *  194.130.106.132  


-----Mensaje original-----
De: Holger Bauer [mailto:Holger dot Bauer at citec dash ag dot de] 
Enviado el: Wednesday, January 12, 2005 7:51 AM
Para: Abdul Aziz; m0n0wall at lists dot m0n0 dot ch
Asunto: AW: [m0n0wall] Block msn and yahoo messenger

Hi,

you can sent the logon domainnames of the messengers to nirvana by entering
DNS-entrys in your DNS-Server to a static IP that doesn´t exist. I once had
a list with all logondomains for messengers (for example something like:
logon.yahoo.com). If you use the m0n0 for DNS just add the DNS-entries
there. Use google to find the logondomains of the messengerservices. No
logon, no chat! ;-) 
Of course this could be overriden by using another DNS-Server or entering
DNS-entries in a local machines hostfile but the user first has to find out
why the messengers don´t connect to do so, right? There are also Webversions
of the Messengers, if you want to block those too specify also entries for
these like "go.icq.com".

Blocking special Ports won´t help, as many messengers try to connect via
port 80 (http) if the native ports are blocked, so the only way with mono I
know is using fake DNS-entries.

Regards,
Holger Bauer


-----Ursprüngliche Nachricht-----
Von: Abdul Aziz [mailto:aaziz at justbooking dot com]
Gesendet: Mittwoch, 12. Januar 2005 11:26
An: m0n0wall at lists dot m0n0 dot ch
Betreff: [m0n0wall] Block msn and yahoo messenger





Dear All,

How can we block msn messenger as well as yahoo messenger
plz reply as soon as possible.

Regards:
A.Aziz




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