Re: Plz i need help.... or i ll be fired :(

[Sp0oKeR <spooker@gmail.com>]

Try add

iptables -I POSTROUTING -t nat -o eth1 -j MASQUERADE

And make sure that second machine has first machine (IP) as gateway.

Att,


On 9/27/05, Alaios <alaios@yahoo.com> wrote:
>
> Hi plz take a look at the following example
>
> The laptop has 2 ethernet interfaces
> To eth1 comes traffic from src 143.233.222.253 <http://143.233.222.253>
> The eth0 has ip address 10.2.4.2 <http://10.2.4.2> and it is connected
> back to back with eth1 of other pc with ip address
> 10.2.4.1 <http://10.2.4.1>
> I want to forward the traffic with src 143.233.222.253<http://143.233.222.253>
> to the 10.2.4.1 <http://10.2.4.1> pc and if it works i will redo this
> for a second pc so as to l send the traffic to a third
> on.
> Can u help me plz?
>
> I have tried this one
> iptables -t nat -A PREROUTING -i eth1 -s
> 143.233.222.253 <http://143.233.222.253> -j DNAT --to-destination 10.2.4.1<http://10.2.4.1>
> i have also set the
> /proc/sys/net/ipv4/ip_forward to 1
> but still i cant see any trafiic to eth0 interface (ip
> 10.2.4.2 <http://10.2.4.2>)
>
>
> I have also tested this one
> iptables -t nat -A PREROUTING -p tcp -d 143.233.222.77<http://143.233.222.77>
> (laptop eth1 card) --dport 22453 (i have cheched dst
> port with tcpdump) 00 -j DNAT --to-destination
> 10.2.4.1 <http://10.2.4.1>
> this still doesnt work
> Every time i try to apply a new rule i use first
> the iptables -F
> iptables -t nat -F command
>
>
>
>
>
>
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--
=====================
Rodrigo Ribeiro Montoro
Desenvolvedor BRMAlinux
spooker@brc.com.br
RHCE/LPIC-I
=====================