RE: How can I block Yahoo Messenger

  • From: mathif@xxxxxxxxxxxxxxx
  • To: isalist@xxxxxxxxxxxxx
  • Date: Mon, 24 May 2004 15:10:07 +0300

Salaam Nabil,
I know itz very annoying, but don't worry, here are few steps which you need
to follow. The problem with Yahoo Messenger is once you block port 5050
Outbound, it will keep trying other ports which will also slow down your
network.
Here you go...
1. In ISA MMC, browse thru Policy Elements - Destinationset- Create New Set-
Deny Yahoo- ADD-
A) shttp.msg.yahoo.com
B) shttp.msg.yahoo.com/notify
C) insider.msg.yahoo.com
D) update.messenger.yahoo.com
E) us.dl1.yimg.com
F) us.update.companion.yahoo.com
G) ypager.exe (IMPORTANT)
H) yupdater.exe (IMPORTANT)

2. Now, browse thru Accesspolicy-Site&ContentRule-NewRule-Deny
Yahoo-Deny-Custom-Specified Destinationset-Deny Yahoo to any request

You are done, You may want to restart isactrl, and try to login to your
Yahoo Messenger. This shuld work...!

Good Luck.!

Regards, 
Mohammed Athif Khaleel 
Asst.Network Engineer 
AlFaisaliah Group Information Technology 
Tel.: +966-1-461-0077 x.209
Moble.: +966-509774015 
Email: mathif@xxxxxxxxxxxxxxx
"Save Internet, Keep all the systems patched" 
Web: http://alfaisaliah.com


-----Original Message-----
From: Nabil, Ahmed [mailto:anmahmou@xxxxxxxxxx] 
Sent: Monday, 24 May 2004 2:01 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] How can I block Yahoo Messenger


http://www.ISAserver.org

Good morning All,

This is very annoying issue. How can I block Yahoo Messenger for Web Proxy
clients. I created a protocol rule and I blocked the TCP 5050 for inbound
and outbound but still the users can access Yahoo messenger.

Please advice.

Thanks,

Ahmed

-----Original Message-----
From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx]
Sent: Monday, May 24, 2004 11:01 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Message Screener


http://www.ISAserver.org

Is there a way to configure so as to have the message screener scan outbound
as well as inbound?

John Tolmachoff
Engineer/Consultant/Owner
eServices For You


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