Something between DNAT and REDIRECT

Hello!

Is there a way to make iptables change destination port only for a
tcp/udp packet? As the manual says DNAT takes ip[ort] as the argument,
but I don't know the ip (it can be any host).
I mean something like the REDIRECT, but without touching the ip addr, it
should remain untouched; the port should be changed only.

Can it be done?

thanks,
Myst

Hello,

Tomasz Grzelak a écrit :
>
> Is there a way to make iptables change destination port only for a
> tcp/udp packet? As the manual says DNAT takes ip[ort] as the argument,
> but I don't know the ip (it can be any host).
> I mean something like the REDIRECT, but without touching the ip addr, it
> should remain untouched; the port should be changed only.

Your manual is not up to date or inaccurate. "-j DNAT --to ort[-port]"
is valid and does what you want.