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Dan Egli [mailto:[EMAIL PROTECTED]] wrote:
> specific port on the public IP it is
> sent to that same port on a machine behind the
> firewall/masquerading box.
>
> i.e. 1.2.3.4 port 3050 -> 192.168.0.7 port 3050
>
> I've looked all over and cannot find how to do it using
> IPTables.
for tcp:
iptables -t nat -I PREROUTING -p tcp -d $EXTERNAL_IP --dport $EXTERNAL_PORT
\
-j DNAT --to-destination "$INTERNAL_IP:$INTERNAL_PORT"
for udp:
iptables -t nat -I PREROUTING -p udp -d $EXTERNAL_IP --dport $EXTERNAL_PORT
\
-j DNAT --to-destination "$INTERNAL_IP:$INTERNAL_PORT"
Hope these help. I am beginning work on a more definitive iptables howto
that will cover this and more.
Jamin W. Collins
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