Brian -
In lieu of placing the Web server completely outside the firewall, I think
you can add a third NIC to your firewall and hang the Web server off of it.
I think (and PLEASE if I'm wrong, correct me!) that ipchains is such that
you establish rules between any two interfaces - in the two-interface case,
rules between eth0 and eth1 are all there is, but if you add an eth2, I
think you you can make up a "triangle" of rules such that the Web server
touches the Internet differently from how the rest of your LAN touches it
and you can also have some limited contact between your LAN and the Web
server (or, safest bet, none at all).
- Jeff
-----Original Message-----
From: Brian K. Murphy [mailto:">bmurphy@maximumhost.net]
Sent: Sunday, April 23, 2000 11:52 PM
To: ">ale@ale.org
Subject: [ale] network security
I have a question. I am building a fairly large network consisting of a
large number of client machines and servers connected to the Internet
through a multi-megabit connection. I need to set up a firewall for
security, but I want to put the web server outside the firewall (using the
"sacrificial lamb" security model). Now, dumb question is this, how can I
go from the router (cisco) to the web server to the firewall to the ethernet
switch/network with everything else??
Keith
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