Iptables –A INPUT –t tcp –dport 3128

Iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j REDIRECT --to-port 3128

Iptables –A OUTPUT –t tcp –dport 3128

Iptables –A FORWARD –s 0.0.0.0 –d 0.0.0.0 –t tcp – dport 3128

Iptables -t nat -A POSTROUTING -i eth1 -p tcp -- dport 80 -j REDIRECT --to-port 3128