#!/bin/bash
#
# Resets all firewall rules
echo "Stopping firewall and allowing everyone..."
#
# Modify the following settings as required:
#
IPTABLES=/sbin/iptables
#
# Reset the default policies in the filter table.
#
$IPTABLES -P INPUT ACCEPT
$IPTABLES -P FORWARD ACCEPT
$IPTABLES -P OUTPUT ACCEPT
#
# Reset the default policies in the nat table.
#
$IPTABLES -t nat -P PREROUTING ACCEPT
$IPTABLES -t nat -P POSTROUTING ACCEPT
$IPTABLES -t nat -P OUTPUT ACCEPT
#
# Reset the default policies in the mangle table.
#
$IPTABLES -t mangle -P PREROUTING ACCEPT
$IPTABLES -t mangle -P POSTROUTING ACCEPT
$IPTABLES -t mangle -P INPUT ACCEPT
$IPTABLES -t mangle -P OUTPUT ACCEPT
$IPTABLES -t mangle -P FORWARD ACCEPT
#
# Flush all the rules in the filter, nat and mangle tables.
#
$IPTABLES -F
$IPTABLES -t nat -F
$IPTABLES -t mangle -F
#
# Erase all chains that are not default in filter, nat and mangle tables.
#
$IPTABLES -X
$IPTABLES -t nat -X
$IPTABLES -t mangle -X