I think even if you block the AOL service, it looks for any open port and in
most cases (Port 80) and goes out through that, so you really have to block
the ip addresses. I may be wrong .. but if somebody knows for sure... please
provide the input. Thanks.
-Raman
-----Original Message-----
From: ThM [mailto:th.mue AT GMX DOT NET]
Sent: Tuesday, June 24, 2003 10:39 AM
To: FW-1-MAILINGLIST AT AMADEUS.US.CHECKPOINT DOT COM
Subject: Re: [FW-1] Need Help - Blocking Instant Messenger ip Addresses
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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