You cannot stop them by ports alone. They will just morph to use other ports.
AI has code that will look into http packets looking for messenger and p2p
apps, but in order for that to work, the p2p apps have to use port 80. For
that to happen, and this is checkpoints design recommendations, is that you
restrict your workstations to only a few services that are needed. Like port
80 can go anywhere, because AI will look into the packets to find p2p. Other
services that may be needed like telnet or ftp should be restricted to only
certain machines or only certain destination subnets if possible. If you leave
ftp open to anywhere, the p2p app will use it and ai won't be able to find the
p2p app to stop it. You basically need an almost air tight security policy for
your work stations which doesn't always go over well with users/managers.
There are third party apps that are more robust like L7 from akonix, but they
will cost you a little bit and require hardware to run on. They still have
design requirements.
Good luck.
Rob
-----Original Message-----
From: mcabrera [mailto:mcabrera AT EASYNET.COM DOT UY]
Sent: Tuesday, September 23, 2003 3:05 PM
To: FW-1-MAILINGLIST AT AMADEUS.US.CHECKPOINT DOT COM
Subject: [FW-1] p2p in NG FP2
I can deny p2p aplications, in NG FP2 over NOKIA IP71?
thaks, a lot
loop.-
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