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Re: Firewalling under Debian


On Tue, Mar 04, 2003 at 12:11:12AM +1100, bob parker wrote:
> My son's proposed network is to be this:
> Firewall / NAT / Gateway machine connected to cable using 1 nic.
> Connects to hardware router / switch using 2nd nic.
> He has the switch and will be buying a PIII 400 2nd hand for the fw.
> We both know it's overkill but spares for PIIIs are cheaper than earlier 
> models apparently.

         external IP
Internet -- eth0 - Firewall - eth1 -[switch]++++
                     PC (DEBIAN)            \\\\\
                                             Many machines

> Switch connects to 2 * dual boot Mdk/Win XP machines and 1 network printer.

Yes.  Your son is smart. :-)  Listen to him.

> The fw machine is to run Debian with 2.4 kernel and iptables.

with ipmasq package and stronger script installed from

> My question is, what is the best way to go about setting up the Debian fw 
> machine?
> I have the 7 cds for 3.0r1.

You have too much.  First CD was enough.

Also read my document below.  It has some firewall thingy too.


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        Osamu Aoki <osamu@debian.org>   Cupertino CA USA, GPG-key: A8061F32
 .''`.  Debian Reference: post-installation user's guide for non-developers
 : :' : http://qref.sf.net and http://people.debian.org/~osamu
 `. `'  "Our Priorities are Our Users and Free Software" --- Social Contract

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