#!/bin/bash

iptables -A INPUT -p tcp -m multiport --destination-ports 22,25,53,21,80,443,465,5222,5269,5280,6900,6121,5121 -j ACCEPT
iptables -A INPUT -p udp -m multiport --destination-ports 53 -j ACCEPT
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -P INPUT DROP
iptables -P FORWARD DROP