[WBEL-users] Lost is routing hell

[Christian Nygaard]

On Thu, 19 Aug 2004, Denis Croombs wrote:

> I am trying to setup a firewall/router with 4 interfaces and cannot get my
> head around how to setup the routing between the interfaces, can any kind
> person please tell me how to set this up. (I will be useing shorewall to do
> the firewall protection afterwards)
> (I have done this some 2 years ago but I just cannot get my head around it
> at the moment, and it is now really getting to me)
>
> ETH0 connection to internet
> ETH1 Local connection number 1 (using squid)
> ETH2 DMZ connection
> ETH3 Second local connection direct access to the internet.
>
> Any clues/links that would ease the brain cells ?
>
> (this is on Whitbox 3.0 with all the latest updates)
>
> The system works except that I cannot get the eth1 & 3 to be able to ping
> the internet.
>
> Many thanks
>
> Denis
>
>
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Have you enabled IPFORWARDING?

/proc/sys/net/ipv4/ip_forward

What does your routing table look like?
Is the firewall rules preventing things?

//Chris