Port forwarding with iptables?

[Michael O'Keefe]

Amit Chakradeo wrote:
> 
> On Fri, Jun 21, 2002 at 03:28:52PM -0700, John Oliver wrote:
> > I want to forward a given port on a machine to a remote host.  I haven't
> > found anything that specifically covers this... just IP Masqueradiing.
> > I'm kicking those rulesets around, but aren't having much luck :-(
> >
> 
> Do you want something like redirecting HTTP traffic to particular internal
> host ? In that case, I have a rule which works for me...
> iptables -t nat -A PREROUTING -i $INET_IFACE -p TCP --dport 80 -j DNAT --to $INTERNAL_IP_ADDRESS

shoudn't that be ${INTERNAL_IP_ADDRESS}:80

Or does DNAT preserve the port by default ?

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