#!/bin/bash
# Vari�veis
# -------------------------------------------------------
echo "Securing your System"
# -------------------------------------------------------
iptables=/sbin/iptables
IF_EXTERNA=eth0
$iptables -P INPUT ACCEPT
$iptables -P FORWARD ACCEPT

$iptables -F
$iptables -X
$iptables -F -t mangle
$iptables -X -t mangle

# Determina a pol�tica padr�o
$iptables -A INPUT -p tcp --dport 22003 -j ACCEPT
# -------------------------------------------------------
$iptables -P INPUT DROP
$iptables -P FORWARD DROP

$iptables -A INPUT -i lo -j ACCEPT
$iptables -A OUTPUT -o lo -j ACCEPT

$iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

# Libera acesso externo a determinadas portas
# -------------------------------------------------------
$iptables -A INPUT -p tcp --dport 22003 -j ACCEPT
$iptables -A INPUT -p tcp --dport 22253 -j ACCEPT
$iptables -A INPUT -p udp --dport 22253 -j ACCEPT
$iptables -A INPUT -p tcp --dport 80 -j ACCEPT

# --------------------------------------
echo "Iptables Firewall Filtering Active"