Thread: Port forward

Hello,

I have read Linux iptables: Port Redirection Example
but I would need some help on port forward.

I have:

public_ip(eth0) --pc--10.10.10.1(eth1)------10.10.10.2--storage

i need acces from internet to storage on port 80

what I tryed:
iptables -t nat -A PREROUTING -p tcp -i eth0 -d publicip --dport 80 -j DNAT --to 10.10.10.2:80
iptables -A FORWARD -p tcp -d 10.10.10.2 --dport 80 -j ACCEPT
iptables -A INPUT -i eth1 -p tcp -m tcp --dport 80 -j ACCEPT


but it still does not work

Your rules looks ok to me. What about your default polices? Did you see anything in your logs? You also need a POSTROUTING rule to enable masquerading if the redirection goes to another machine.

Code:

iptables -t nat -A POSTROUTING -j MASQUERADE -o ethX