Re: Dealing with Open Ports for Exchange Server is behind ISA

The advantage is that since ISA restricts the traffic to only those
published ports, those are the only ways for the bad guys to hit your Exch
server.
This might be a good start..
http://microsoft.com/exchange/techinfo/administration/2000/default.asp
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG

----- Original Message -----
From: "Donald Coleman" <dcoleman@xxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Tuesday, October 30, 2001 18:30
Subject: [isalist] Dealing with Open Ports for Exchange Server is behind ISA


http://www.ISAserver.org


Obviously when exchange is behind ISA, ports 25 and 110 and 80 are in an
open state as OWA necessitates that in addition to the requirement of the
Internet Mail Service in exchange itself.

With these ports open, one could be subject to relaying or spamming or
some other security risk.

Any ideas on how to deal with this effectively

regards
don

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