Ip Forwarding
hey guys please help me out !!
i want to forward a request from my static/public IP to any of our LAN Ip Address i tried it using iptables , can anybody give me steps to write new iptable to do the stuff

1 - routing must be enabled. edit /etc/sysctl.conf and change the following line
net.ipv4.ip_forward = 1

restart network.

here is an example for local http server (tcp 80):

static public ip of linux: 212.1.1.1
private ip of linux : 192.168.0.1

ip of local http server: 192.168.0.2

iptables -t nat -A PREROUTING -d 212.1.1.1 -p tcp --dport 80 -j DNAT --to 192.168.0.2

also SNAT must be defined for local server otherwise the packets come from internet wont return to sender:
iptables -t nat -A POSTROUTING -s 192.168.0.2 -j SNAT --to 212.1.1.1

i hope this example will help u