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Do I need a firewall on both machines with ICS?

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masterm

Programmer
Jan 25, 2002
13
ZA
I have a machine running Win Server 2003 and one running XP Pro. The machines are linked peer to peer. The 2003 machine is my internet gateway. Do I need to have a firewall running on both machines when I connect to the net or only the 2003 machine. I have anti virus running on both machines and windows firewall on the 2003 machine?
 
This is a great question, The ICS server should protect it's self, but I don't think it can protect the client.

The ICS is acting as a router, which makes me think it will, but will it apply it's own firewall settings to
traffic that it's passing...

I wouldn't play around, on the Win 2003 turn on IPSec the outbound Nic, block all traffic that you don't want the out-bound nic card to pass. Done SLAM dunk. <full stop>

I'm doing something similar at my work...

Two XP machines, on doing the data collection, one presenting it on a web page using Microsofts personal web services.

The world will see the web server and it's as restricted as I can make it.

The PC to PC lan, is much less restricted but I will still blocked all the unneaded ports.

Was a big job to eliminate all unnessary ports and still have it work, some diging was required to find all the ports needed....

I have it working with Microsoft Firewall...

But
I will still turn-on IPSec.
I will buy a buy a personal firewall and lock down the same ports.
I will lock the IE6 menu settings on both PCs two...

Why? Defence in Depth...
If a hacker gets past one barrier he has many more to go.

Oh and my web server is just presenting data gathered by the second PC, but I want it to stay up, everyday, and not to be hijacked..

Brian

 
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