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Network Security Firewalls
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Re: Blocking IM

Subject: Re: Blocking IM
Date: Fri, 9 Dec 2005 01:19:54 +0100
On Wed, 7 Dec 2005 20:50:48 -0500 
Bourque Daniel <Daniel.Bourque@loto-quebec.com> wrote:

OK, there is something I don't get here..
 
I have been using this technique for a longtime to block whole domain.
How can you only block msg.yahoo.com in your inside DNS server without
blocking all yahoo.com?

That's heavily depending on your internal DNS server.

For DNSMASQ you simply add to /etc/hosts (of the DNS cacheing server)
        127.0.0.2       msg.yahoo.com

For BIND you'll probably have to add a local zone (a complete
third-level-zone!) msg.yahoo.com with a single entry pointing 
e.g. to localhost.

Bye

Volker


-- 

Volker Tanger    http://www.wyae.de/volker.tanger/
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