linux port forward problem

[daddycaddy]

hi there,

i want to make my linux server (FC to port forward to another server of mine (windows 2003), so basicaly whats comeing to server1 on port 84 to be forwarded to server2 on port 84

this is what i tryed on server1 but its not working:

echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -d server2 -j MASQUERADE
iptables -t nat -A PREROUTING -i eth0 -p tcp -d server1 --dport 84 -j DNAT --to server2

Please advice

note: the servers are in diferent networks from diferent providers

Thanks

[Lazydog]

You just need to change the format of your DNAT statemnent.
Check this DNAT how-to out

[daddycaddy]

i tryed

$iptables -t nat -A PREROUTING --dst $server1 -p tcp --dport 84 -j DNAT --to-destination $server2
$iptables -t nat -A OUTPUT --dst $server1 -p tcp --dport 84 -j DNAT --to-destination $server2

still not work

can someone explain me exactly what i need to put there to make it work?
thanks

[Lazydog]

They look good is the winbox setup to listen for port 84 connections?