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#!/bin/sh
#
# /etc/rc.d/iptables: load/unload iptable rules
#
#rules=rules.v4
rules=vlan.v4
iptables_clear () {
echo "clear all iptables tables"
iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
iptables -t raw -F
iptables -t raw -X
iptables -t security -F
iptables -t security -X
}
case $1 in
start)
iptables_clear
echo "starting IPv4 firewall filter table..."
/usr/sbin/iptables-restore < /etc/iptables/${rules}
;;
stop)
iptables_clear
echo "stopping firewall and deny everyone..."
/usr/sbin/iptables -P INPUT DROP
/usr/sbin/iptables -P FORWARD DROP
/usr/sbin/iptables -P OUTPUT DROP
# Unlimited on local
/usr/sbin/iptables -A INPUT -i lo -j ACCEPT
/usr/sbin/iptables -A OUTPUT -o lo -j ACCEPT
# log everything else and drop
/usr/sbin/iptables -A INPUT -j LOG --log-level 7 --log-prefix "iptables: INPUT: "
/usr/sbin/iptables -A OUTPUT -j LOG --log-level 7 --log-prefix "iptables: OUTPUT: "
/usr/sbin/iptables -A FORWARD -j LOG --log-level 7 --log-prefix "iptables: FORWARD: "
;;
open)
iptables_clear
echo "outgoing Open firewall and deny everyone..."
/usr/sbin/iptables -P INPUT DROP
/usr/sbin/iptables -P FORWARD DROP
/usr/sbin/iptables -P OUTPUT ACCEPT
/usr/sbin/iptables -A OUTPUT -j ACCEPT
# Unlimited on local
/usr/sbin/iptables -A INPUT -i lo -j ACCEPT
/usr/sbin/iptables -A OUTPUT -o lo -j ACCEPT
# Accept passive
/usr/sbin/iptables -A INPUT -p tcp --dport 1024: -m state --state ESTABLISHED,RELATED -j ACCEPT
/usr/sbin/iptables -A INPUT -p udp --dport 1024: -m state --state ESTABLISHED,RELATED -j ACCEPT
# log everything else and drop
/usr/sbin/iptables -A INPUT -j LOG --log-level 7 --log-prefix "iptables: INPUT: "
/usr/sbin/iptables -A OUTPUT -j LOG --log-level 7 --log-prefix "iptables: OUTPUT: "
/usr/sbin/iptables -A FORWARD -j LOG --log-level 7 --log-prefix "iptables: FORWARD: "
;;
restart)
$0 stop
$0 start
;;
*)
echo "usage: $0 [start|stop|restart]"
;;
esac
# End of file
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