You might also find this useful....
http://www.netfilter.org/documentation/HOWTO/NAT-HOWTO-6.html
Lee W wrote:
> Johnny Hughes wrote:
>
> <snip>
>
>> You need to do ip-masquerading to pass traffic thru a linux box as a
>> gateway. That requires 2 NICs and an iptables script which does
>> masquerading
>>
>> I use this script to setup that kind of box:
>> http://ldp.hughesjr.com/HOWTO/IP-Masquerade-HOWTO/stronger-firewall-examples.html#RC.FIREWALL-2.4.X-STRONGER
>>
>>
>>
> Is it absolutely necessary to use IP-Masq / NAT in order to setup
> Linux as a Router?
>
> I'm trying to setup a few Linux machines (Centos of course) as
> convential routers as opposed to Gateways so that I can learn more
> about routing between them on various Subnets.
> All the How-To's I've found talk about Masq, I would appreciate if
> anyone can point me in the direction of a convential Linux router howto.
>
> Thanks in advance
>
> Regards
>
> Lee
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