[ale] Gateway / Routing Problem

[Mike Millson]

Kevin,

I think I know what you're going through. About 6 weeks ago I replaced my
LinkSys router w/ a Linux box, and did what you're trying to do.

I'm using RH7.1 and used iptables to set up NAT. I'm a newbie too, so I
don't know if what I did will work, but here goes...

First, use iptables, not ipchains. Make sure iptables is compiled into the
kernel.

You need to make sure ipchains (the old way of doing routing) is not running
on your run level. For me the command was:

service --level 5 ipchains off

Then you have to make sure iptables is running for your run level:

service --level 5 iptables on

Then you need to give the firewall the rules to do its NAT and other routing
duties. For this I used the rc.DHCP.firewall.txt script in the IPTables
Tutorial 1.1.3. I have bridged DSL, so maybe you need a different ruleset. I
put that scipt in a file called /etc/rc.d/rc.firewall (I don't recall if I
created this file or if it was there already).

To run the rc.firewall script at startup, I added the following lines to the
end of my /etc/rc.d/rc.local script:

echo "Loading the rc.firewall ruleset.."
/etc/rc.d/rc.firewall

I hope I'm not forgetting anything. It's been a few weeks. Hope this helps.

Thank you,
Mike Millson
----------------------------------------
AableTech Solutions, Inc.
770.414.8834
770.414.8206 fax
http://www.atsga.com
----------------------------------------

-----Original Message-----
From: Kevin Stoll [mailto:kevinostoll at yahoo.com]
To: ale at ale.org
Sent: Friday, December 14, 2001 11:33 PM
To: ale at ale.org
Subject: [ale] Gateway / Routing Problem


    I have SuSE 7.0 machine that I have been attempting to get set up as a
gateway/router for my local network. I currently use BellSouth (or HellSouth
as It was earlier referred to) as my provider. I ended up using Roaring
Penguin PPPoE software without any hitches through an Alcatel SpeedTouchHome
DSL/Ethernet Modem and a firewall software, that I can't seem to get
working, called PointMan.

    At any rate, at this point I am able to ping and surf from my Linux
machine but because of the difficulty ( or lack of understanding ) that I am
having with a proper firewall / routing table configuration I can't seem to
get my other machines to browse / surf the internet through the Linux box. I
have read the how-tos at linuxdoc until I am about blue in the face. It has
taken me a while to get this far due to other obligations. It's obvious that
I am missing something essential to solving my problem.

    All in all, for a newbie I have feel as though I have accomplished quite
a bit with my Linux machine. Having had zero knowledge of Unix when I
started at the beginning of this year. I'm sure by now I have just slightly
more than zero. None the less I still have more to learn and I'm loving
every minute of it. :)

    Thank you in advance for any help that you can offer.

Kevin O'Neill Stoll
http://kevinstoll.org/
(770) 569-7251



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