====== Route traffic across two interfaces ======
  * eth0 is the WAN
  * eth1 is the LAN

First, turn on ip forwarding:\\
''echo 1 > /proc/sys/net/ipv4/ip_forward''

Next create iptables rules:\\
''/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
/sbin/iptables -A FORWARD -i eth0 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT
/sbin/iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT''