Hi.
The best way is to block the services of instant Messages from AOL, ... !
So you dosn´t need to know all ipadresses.
I think, it is the best and easiest way.
Thomas
----- Original Message -----
From: "Raman Kalla" <RKalla AT HDBROUS DOT COM>
To: <FW-1-MAILINGLIST AT AMADEUS.US.CHECKPOINT DOT COM>
Sent: Tuesday, June 24, 2003 3:33 PM
Subject: [FW-1] Need Help - Blocking Instant Messenger ip Addresses
> Hi All,
>
> I need to block all traffic of the Instant Message (AOL, Yahoo, hotmail
> messenger) for my Internal Network Range (which consists of my user
> workstations). By using DNS I was able to point all the workstations to
one
> local server on my network and route all Instant message traffic through
> that server. But in order to achieve full control so that some smart user
> doesn't add a entry of instant messenger servers in his hosts file and
> by-pass the DNS, I want to block all the outgoing and incoming traffic for
> ip addresses of the instant messenger servers for my internal Range. I can
> get all the ip addresses of the messenger servers of yahoo, aol, hotmail
by
> doing nslookup. What would be the best way to block these ip addresses in
> Checkpoint NG FP1. Thanks.
>
> Raman
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