Re: linux router/firewall

From: Alan Frame (alan.frame@acm.org)
Date: 12/29/02 

From: alan.frame@acm.org (Alan Frame)
Date: Sun, 29 Dec 2002 11:20:27 +0000

"Erik Ljungström" <erik@northernmost.org> wrote:

> On Tue, 24 Dec 2002 12:44:54 +0000, Lord Shaolin wrote:
[]
> > A firewall is essentially a router (normally referred to as a gateway) with
> > the addition of some level of filtering.
> >
> > It routes between a WAN (the Internet) and a LAN or a single machine.
> >
>
> Not quite my definition actually, but I get your idea..
> A firewall is not necessarely a router/gateway. A Linux box can very well
> act as a firewall, without actually routing any traffic outwards, and vice
> versa.

But then it's not a firewall - it's a proxy or ALG ;->

> But that's only if I'm a nitpick, which I'm unfortunatly is today,
> so I guess I'd better go and prepare for some flames now ;-)

<g>

How about: 'A firewall is just a router with attitude' or 'A firewall is
just a router with the default route going to /dev/null' ?

rgds, Alan 

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