#!/bin/bash

IPT="/sbin/iptables"

$IPT -P INPUT DROP
$IPT -P OUTPUT ACCEPT
$IPT -P FORWARD DROP

$IPT -F

$IPT -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
$IPT -A INPUT -i lo -j ACCEPT

$IPT -A INPUT -p tcp -m multiport --dports \
21,22,25,80,110,10000,14534,51234 -m state --state NEW -j ACCEPT