Re: come back the traffic on same interface which it input

[Steven Kath <steven.kath@vyatta.com>]

On Tue, 2011-06-14 at 23:31 -0300, Usuário do Sistema wrote:
> hello everyone, I have two ISPs in my firewall that are ADSLs lines. I
> wish that all trafic input in wan1 ( ISP1 ) come back on it. but this
> isn't happening because the firewall gateway is ISP2 ( wan2 ) so all
> input traffic by ISP1 ( wan1 ) doesn't work because the firewall
> forwards all traffic as it as your gateway wich is ISP2
> 
> for exemplo, I have a http service on this firewall and when I attempt
>  access it from Internet doesn't work because it's on my ISP1.
> 
> how I can do for all input traffic on wan1 come back on it and not on
> wan2 wich is the firewall gateway ??
> 
> any tips are welcome

Here is a good start for a simple implementation:

http://lartc.org/howto/lartc.rpdb.multiple-links.html

If you need to be more selective, you can use iptables markings to get
finer control:

http://linux-ip.net/html/adv-multi-internet.html