#!/bin/bash

set -x
export LAN=eth0
export WAN=ppp0

iptables -L -v
iptables -F

iptables -N LOGDROP
iptables -A LOGDROP -j LOG
iptables -A LOGDROP -j DROP

iptables -I INPUT -i eth0 -j ACCEPT
iptables -I INPUT -i lo -j ACCEPT
iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -P INPUT LOGDROP

iptables -L -v