Re: FORWARDING and NAT chains

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On Thursday 29 January 2004 2:02 pm, Srinivasa Hebbar wrote:

> Hello,
>
> I believe that the NAT PREROUTING and POSTROUTING will
> always takes place for all the incoming/outgoing packets
> irrespective of whether the packet is destined to the node or not.
>
> I have a situvation that if the dest. IP address of the packet is
> for the local node, then apply NAT rule, otherwise it should simply
> forward the packet according to the routing table.
>
> How can I achive the above?

Place the destination address in the nat rule, eg:

iptables -A PREROUTING -t nat -d ! my.ip.add.ress -j DNAT --to a.b.c.d

This means "destination nat all packets which are not addressed to 
my.ip.add.ress and send them to a.b.c.d".

Regards,

Antony.

-- 
"The joy of X!!??  I've always hated compiling graphical shite.  You have a 10 
line program, and it ends up depending on the entire known universe."

 - Philip Hands

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