Port Forwarding

forwarding.sh

#!/bin/bash

if [ "$EUID" -ne 0 ]; then
	echo >&2 "Sorry, you need to run this as root"
	exit 1
fi

iptables -A INPUT -i eth0 -p tcp --dport 80 -j ACCEPT
iptables -t nat -I PREROUTING -p tcp --dport 80 -j REDIRECT --to-ports 32080
iptables -t nat -I OUTPUT -p tcp -o lo --dport 80 -j REDIRECT --to-ports 32080

iptables -A INPUT -i eth0 -p tcp --dport 443 -j ACCEPT
iptables -t nat -I PREROUTING -p tcp --dport 443 -j REDIRECT --to-ports 32443
iptables -t nat -I OUTPUT -p tcp -o lo --dport 443 -j REDIRECT --to-ports 32443