[ale] Gateway / Routing Problem

[Ken Nagorski]

Hi there Kevin,

Can you give us some debug information? 

What does `less /proc/sys/net/ipv4/ip_forward` tell you?

What is the output of `iptables -t nat --list -n`

What does route -n say?

Thanks
Ken

> 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]
> 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
> 
> 
> 
> ---
> This message has been sent through the ALE general discussion list. See
> http://www.ale.org/mailing-lists.shtml for more info. Problems should
> be  sent to listmaster at ale dot org.


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Alice remarked.
Oh, you can't help that, said the Cat:
we're all mad here. I'm mad. You're mad.
How do you know I'm mad? said Alice.
You must be, said the Cat,
or you wouldn't have come here.


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