#!/bin/sh
iptables --flush
iptables --table nat --flush
iptables --delete-chain
iptables --table nat --delete-chain
iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE
iptables -A FORWARD -i eth1 -j ACCEPT
iptables -t nat -A PREROUTING -p tcp --dport 10000:19999 -j DNAT --to-destination 192.168.0.2
iptables -t nat -A PREROUTING -p udp --dport 10000:19999 -j DNAT --to-destination 192.168.0.2
iptables -t nat -A PREROUTING -p tcp --dport 20000:29999 -j DNAT --to-destination 192.168.0.3
iptables -t nat -A PREROUTING -p udp --dport 20000:29999 -j DNAT --to-destination 192.168.0.3
iptables -t nat -A PREROUTING -p tcp --dport 30000:39999 -j DNAT --to-destination 192.168.0.4
iptables -t nat -A PREROUTING -p udp --dport 30000:39999 -j DNAT --to-destination 192.168.0.4
iptables -t nat -A PREROUTING -p tcp --dport 40000:49999 -j DNAT --to-destination 192.168.0.5
iptables -t nat -A PREROUTING -p udp --dport 40000:49999 -j DNAT --to-destination 192.168.0.5
echo 1 > /proc/sys/net/ipv4/ip_forward