Re: Portforwarding

[Jason Boxman <jasonb@edseek.com>]

On Friday 28 September 2001 02:28 pm, Jan Tammen wrote:
> Hello,
> I'm using potato and kernel 2.4.8. I'm trying to map some ports to a
> client inside my NAT-network. So far i'm using this, but it seems to
> have no effect:
>
> iptables -t nat -A PREROUTING -p tcp -i mydevice --dport 1111 -j DNAT --to
> client_ip:1111
>
> ... and so on, and then:
>
> iptables -A FORWARD -i mydevice -p tcp -d client_ip --dport 1111 -j ACCEPT
>

I've been using:

iptables -A PREROUTING -t nat -j DNAT -p udp --destination-port 1234 \ 
--to-detination 192.168.0.22

It works but I couldn't explain why. ;)

> Any hints? tia, Jan.