#!/bin/bash

IPTABLES=/usr/sbin/iptables

# Flush the tables.
$IPTABLES -F

# Drop bootp ports.
$IPTABLES -m multiport -A INPUT -p tcp --dports 67,68 -j DROP
$IPTABLES -m multiport -A INPUT -p udp --dports 67,68 -j DROP

# Drop netbios ports.
$IPTABLES -m multiport -A INPUT -p tcp --dports 137,138,139 -j DROP
$IPTABLES -m multiport -A INPUT -p udp --dports 137,138,139 -j DROP