Port translation

[Rüdiger Pretzlaff]

Am 12.07.2008 um 12:21 schrieb Uno Engborg:

> For various reasons I would like to  forward trafic to port 390 to  
> port 5432 on the same host. One would think this would be a
> simple task for iptables but I have now tinkered with this for two  
> days, and I still fail to get it right.
>
> I try something like:
> echo 1 > /proc/sys/net/ipv4/ip_forward
>
> iptables -t nat -A PREROUTING  -p tcp  --dport 390 -j REDIRECT --to- 
> ports 5432
>
> I have also tried :
> iptables -t nat -A PREROUTING  -p tcp --dport 390 -j DNAT --to  
> 192.168.0.5:5432
>
> where 192.168.0.5 is the address of the host
>
>
> Any ideas on how to do this?
>
> Regards
> Uno Engborg

Hi,

add:
iptables -A FORWARD  -p tcp --dport 390 -d 192.168.0.5 -j ACCEPT

cya
Ruediger Pretzlaff