firewall (fwd)

[<debian-isp@ghost.net.cfw.com>]

---------- Forwarded message ----------
Date: Wed, 27 Sep 2000 21:28:47 -0500 (EST)
From: debian-isp@ghost.net.cfw.com
To: debian-isp@ghost.net.cfw.com
Subject: firewall

Hello All,
Has anyone found making a debian machine with firewall support useful?
What are firewalls useful for? Do they simply prevent packets from passing
through the firewall into the rest of the network? Would a firewall
necessarly have to be also configured to be a router? Any info you guys
can provide would be useful. I was thinking about making one of my debian
machies a firewall, but don't really know what I would do with it:)

Thanks,

D. Ghost