Re: Port forwarding doesn't work.

[Gerd Zemella <gzemella@gmx.net>]

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Hi Herman,

did you try something like
 
iptables -t nat -I PREROUTING  -d x.x.x.x -j DNAT --to destination
y.y.y.y

where you can add also protocol,port.....
Important is also that the destination machine routes back the packets
via the nat machine or you must specify an additional POSTROUTING roule
so that it looks for the destination machine that the pakets are
originated from the nat machine. 
Perhaps an example to the PREROUTING roule.

iptables -t nat -I POSTROUTING -d y.y.y.y -j SNAT --to-source z.z.z.z
then z.z.z.z should be bind to the natting machine.

works for iptables 1.2.7a

greetings 
Gerd

Am Son, den 12.10.2003 schrieb Herman um 22:11:

> Has anybody got me a *working* port forwarding rule please???
> 
> This thing is driving me nuts, since the rules straight from the manuals don't 
> work with 1.2.7a or 1.2.9rc1.
> 
> Cheers,

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