Re: Forward port 80 (www) to other router..

[Marcin Giedz <marcin.giedz@xxxxxxxxxxxxxx>]

UÅytkownik Marcin Giedz napisaÅ:

> Hello..
>
> Here is the problem: I have two routers connected to two different providers. 
> Both routers have internal interfaces in my LAN.
>
> router1
> provider1<----------->eth0---------linux---------eth1<------------>LAN 
> (192.168.49.101)
> router2
> provider2<----------->eth0---------linux---------eth1<------------>LAN 
> (192.168.49.10)
>
> Nowadays all clients in LAN have set up router1 as the default gateway so all 
> traffic is forwarded to this router1 (www e.g.). Now I'd like to forward all 
> www traffic to router2 from all my clients. I know this should be done on 
> router1 with some iptables rules but I'm rather fresh in netfilter so if it 
> possible please help me ;)
>
> Thanks,
> Marcin
>
>
>  
Hello again ;)

I think my problem is solved with iptables and iproute2 (ip) - mainly 
taken from transparent proxy - THANKSSSS
And here is the solution:

on router1 put:
iptables -t mangle -A PREROUTING -j MARK --set-mark 3 -p tcp --dport 80 
-s 192.168.49.9 (192.168.49.9 is my internal router, behind him there 
are all my clients)
ip rule add fwmark 3 table 2
ip route add default via router2_eth1_address dev eth1 table 2

That is all.
Now I have main router (router1) for other than port 80 traffic and 
router2 for port 80 traffic.

Thanks,
Marcin