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#!/bin/bash
IPT="/usr/sbin/iptables"
#TYPE=bridge
#TYPE=server
TYPE=open
#TYPE=client
clear_ipt() {
${IPT} -F
${IPT} -X
${IPT} -t nat -F
${IPT} -t nat -X
${IPT} -t mangle -F
${IPT} -t mangle -X
${IPT} -t raw -F
${IPT} -t raw -X
${IPT} -t security -F
${IPT} -t security -X
}
case $1 in
start)
case $TYPE in
bridge)
clear_ipt
echo "setting bridge network..."
echo 1 > /proc/sys/net/ipv4/ip_forward
## load bridge configuration
iptables-restore /etc/iptables/bridge.v4
;;
server)
clear_ipt
echo "setting server network..."
## load server configuration
iptables-restore /etc/iptables/server.v4
;;
client)
clear_ipt
echo "setting client network..."
## load client configuration
iptables-restore /etc/iptables/client.v4
;;
open)
clear_ipt
echo "setting open network..."
## load client configuration
${IPT} -P INPUT DROP
${IPT} -P FORWARD DROP
${IPT} -P OUTPUT ACCEPT
${IPT} -A INPUT -i lo -s 127.0.0.0/8 -d 127.0.0.0/8 -j ACCEPT
${IPT} -A OUTPUT -o lo -s 127.0.0.0/8 -d 127.0.0.0/8 -j ACCEPT
${IPT} -A INPUT -p tcp --dport 1024:65535 -m state --state ESTABLISHED,RELATED -j ACCEPT
${IPT} -A INPUT -p udp --dport 1024:65535 -m state --state ESTABLISHED,RELATED -j ACCEPT
${IPT} -A OUTPUT -j ACCEPT
${IPT} -A FORWARD -j LOG --log-level 7 --log-prefix "iptables: FORWARD: "
${IPT} -A INPUT -j LOG --log-level 7 --log-prefix "iptables: INPUT: "
#${IPT} -A OUTPUT -j LOG --log-level 7 --log-prefix "iptables: OUTPUT: "
;;
esac
;;
stop)
echo "clear all iptables tables"
clear_ipt
# Set Default Rules
${IPT} -P INPUT DROP
${IPT} -P FORWARD DROP
${IPT} -P OUTPUT DROP
${IPT} -A FORWARD -j LOG --log-level 7 --log-prefix "iptables: FORWARD: "
${IPT} -A INPUT -j LOG --log-level 7 --log-prefix "iptables: INPUT: "
${IPT} -A OUTPUT -j LOG --log-level 7 --log-prefix "iptables: OUTPUT: "
;;
restart)
clear_ipt
$0 start
;;
status)
${IPT} -v
;;
*)
echo "Usage: $0 [start|stop]"
;;
esac
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