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Old 05-25-2004, 12:52 PM   #1
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Registered: Jul 2003
Location: Pennsylvania
Distribution: Arch Linux
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Firewalling My Home Network

I would like some help/advice on setting up a linux firewall to protect my home network. Currently I am connected to the internet via a cable modem and I have 4 clients that connect to the internet via a linksys router. The router has wireless capabilities which 3 of the computers NEED.

Basically, I would like to have a firewall at the border of my network so that all traffic must pass through it to get to the outside world.

I am by no means a network admin so I don't know exactly the best way to do this, but I would assume that it should go something like this:


Pretty simple in theory I guess and I would assume that this is quite common.

How (in as much detail as you can) would I go about doing this? I know I will need 2 NICs in the firewall box (one for the external net and one for the internal) and also that the firewall will need to act as a router. At least this is what I have been told. After those facts, I really don't know where to start.

I am not a beginner to linux, but I am not an expert I'm still learning alot and would appreciate any help that can be provided to me.

Before you tell me to RTFM or google for the answer, I have! I found a few sites that described how to setup a firewall, but none of theme seemed to have the same hardware configuration that I do.

So I figured that I would ask before I go and screw something up.
Old 05-25-2004, 12:56 PM   #2
Registered: Mar 2003
Location: Scotland
Distribution: Slackware, RedHat, Debian
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If this is going to be a dedicated machine then the easiest way would be to install smoothwall:

All the configuration is simple and the management is web based.
Old 05-30-2004, 11:37 PM   #3
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Registered: Jul 2003
Location: Pennsylvania
Distribution: Arch Linux
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Thanks David. I finally got the time to download and install smoothwall and it works like a charm. Exactly what I was looking for.

Thanks for the help.


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