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firewall

Firewall

#! /bin/sh
# Copyright (c) 1995-2004 SUSE Linux AG, Nuernberg, Germany.
# All rights reserved.
#
# Author: Matthias Praunegger
# Please send feedback to http://bgweiz.at

### BEGIN INIT INFO
# Provides:          
# Required-Start:    
# Should-Start:
# Required-Stop:     
# Should-Stop: 
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: Firewall
# Description:       Firewall for BG/BRG Weiz
### END INIT INFO

IPTABLES=/sbin/iptables
test -x $IPTABLES_BIN || { echo "$IPTABLES_BIN not installed"; 
	if [ "$1" = "stop" ]; then exit 0;
	else exit 5; fi; }

. /etc/rc.status

# Reset status of this service
rc_reset

case "$1" in
    start)
	echo -n "Starting firewall "

	# Variablen
	OUT="-m physdev --physdev-in eth0 --physdev-out eth1 "
	IN="-m physdev --physdev-in eth1 --physdev-out eth0 "
	IPT="iptables -A FORWARD "
	TCP="-p tcp "
	UDP="-p udp "
	DPORT="--destination-port "
	IP1d="-d 193.170.221.1 "
	IP2d="-d 193.170.221.2 "
	IP3d="-d 193.170.221.3 "
	IP4d="-d 193.170.221.4 "
	IP5d="-d 193.170.221.5 "
	IP1s="-s 193.170.221.1 "
	IP2s="-s 193.170.221.2 "
	IP3s="-s 193.170.221.3 "
	IP4s="-s 193.170.221.4 "
	IP5s="-s 193.170.221.5 "

	### .1
	#$IPT $IN $TCP $DPORT 21 $IP1d -j ACCEPT
	##$IPT $IN $TCP $DPORT 22 $IP1d -j ACCEPT
	$IPT $IN $TCP $DPORT 25 $IP1d -j ACCEPT
	$IPT $IN $TCP $DPORT 123 $IP1d -j ACCEPT
	$IPT $IN $UDP $DPORT 123 $IP1d -j ACCEPT
	$IPT $IN $TCP $DPORT 53 $IP1d -j ACCEPT
	$IPT $IN $UDP $DPORT 53 $IP1d -j ACCEPT
	$IPT $IN $TCP $DPORT 80 $IP1d -j ACCEPT
	$IPT $IN $TCP $DPORT 110 $IP1d -j ACCEPT
	$IPT $IN $TCP $DPORT 995 $IP1d -j ACCEPT
	$IPT $IN $TCP $DPORT 443 $IP1d -j ACCEPT
	$IPT $IN $TCP $DPORT 31337 $IP1d -j ACCEPT
	$IPT $IN -p icmp --icmp-type 8 $IP1d -j ACCEPT

	#$IPT $OUT $TCP $DPORT 21 $IP1s -j ACCEPT
	##$IPT $OUT $TCP $DPORT 22 $IP1s -j ACCEPT
	$IPT $OUT $TCP $DPORT 25 $IP1s -j ACCEPT
	$IPT $OUT $TCP $DPORT 123 $IP1s -j ACCEPT
	$IPT $OUT $UDP $DPORT 123 $IP1s -j ACCEPT
	$IPT $OUT $TCP $DPORT 53 $IP1s -j ACCEPT
	$IPT $OUT $UDP $DPORT 53 $IP1s -j ACCEPT
	$IPT $OUT $TCP $DPORT 80 $IP1s -j ACCEPT	
        $IPT $OUT $TCP $DPORT 110 $IP1s -j ACCEPT	
        $IPT $OUT $TCP $DPORT 443 $IP1s -j ACCEPT	
        $IPT $OUT $TCP $DPORT 31337 $IP1s -j ACCEPT	
	$IPT $OUT -p icmp --icmp-type 8 $IP1s -j ACCEPT

	### .2
	$IPT $IN $TCP $DPORT 22 $IP2d -j ACCEPT
	#$IPT $IN $TCP $DPORT 53 $IP2d -j ACCEPT
	#$IPT $IN $UDP $DPORT 53 $IP2s -j ACCEPT
	#$IPT $IN $TCP $DPORT 80 $IP2d -j ACCEPT
	$IPT $IN -p icmp --icmp-type 8 $IP2d -j ACCEPT

	$IPT $OUT $TCP $DPORT 22 $IP2s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 53 $IP2s -j ACCEPT
	#$IPT $OUT $UDP $DPORT 53 $IP2s -j ACCEPT
	$IPT $OUT $TCP $DPORT 80 $IP2s -j ACCEPT
	$IPT $OUT -p icmp --icmp-type 8 $IP2s -j ACCEPT

	### .3
	##$IPT $IN $TCP $DPORT 22 $IP3d -j ACCEPT
	$IPT $IN $TCP $DPORT 25 $IP3d -j ACCEPT
        $IPT $IN $TCP $DPORT 110 $IP3d -j ACCEPT	
	$IPT $IN $TCP $DPORT 143 $IP3d -j ACCEPT
	#$IPT $IN $TCP $DPORT 80 $IP3d -j ACCEPT
	$IPT $IN -p icmp --icmp-type 8 $IP3d -j ACCEPT

	##$IPT $OUT $TCP $DPORT 22 $IP3s -j ACCEPT
	$IPT $OUT $TCP $DPORT 25 $IP3s -j ACCEPT
        $IPT $OUT $TCP $DPORT 110 $IP3s -j ACCEPT	
	$IPT $OUT $TCP $DPORT 143 $IP3s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 80 $IP3s -j ACCEPT
	$IPT $OUT -p icmp --icmp-type 8 $IP3s -j ACCEPT

	### .4
	#$IPT $IN $TCP $DPORT 20 $IP4d -j ACCEPT
	#$IPT $IN $UDP $DPORT 20 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 21 $IP4d -j ACCEPT
	#$IPT $IN $UDP $DPORT 21 $IP4d -j ACCEPT
	#$IPT $OUT $TCP $DPORT 1024:65535 $IP4d -j ACCEPT
	##$IPT $OUT $TCP $DPORT 20000:20120 $IP4d -j ACCEPT
	#$IPT $OUT $UDP $DPORT 1024:65535 $IP4d -j ACCEPT
	##$IPT $OUT $UDP $DPORT 20000:20120 $IP4d -j ACCEPT
	##$IPT $IN $TCP $DPORT 22 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 25 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 123 $IP4d -j ACCEPT
	#$IPT $IN $UDP $DPORT 123 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 53 $IP4d -j ACCEPT
	#$IPT $IN $UDP $DPORT 53 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 80 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 81 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 902 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 110 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 995 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 443 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 31337 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 5801 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 5802 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 5803 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 5804 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 5901 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 5902 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 5903 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 5904 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 6001 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 6002 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 6003 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 6004 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 9090 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 8080 $IP4d -j ACCEPT
	#$IPT $IN $TCP $DPORT 1234 $IP4d -j ACCEPT
	$IPT $IN -p icmp --icmp-type 8 $IP4d -j ACCEPT

	#$IPT $OUT $TCP $DPORT 20 $IP4s -j ACCEPT
	#$IPT $OUT $UDP $DPORT 20 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 21 $IP4s -j ACCEPT
	#$IPT $OUT $UDP $DPORT 21 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 1024:65535 $IP4s -j ACCEPT
	##$IPT $OUT $TCP $DPORT 20000:20120 $IP4s -j ACCEPT
	##$IPT $OUT $UDP $DPORT 1024:65535 $IP4s -j ACCEPT
	##$IPT $OUT $UDP $DPORT 20000:20120 $IP4s -j ACCEPT
	##$IPT $OUT $TCP $DPORT 22 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 25 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 123 $IP4s -j ACCEPT
	#$IPT $OUT $UDP $DPORT 123 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 53 $IP4s -j ACCEPT
	#$IPT $OUT $UDP $DPORT 53 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 80 $IP4s -j ACCEPT	
	#$IPT $OUT $TCP $DPORT 81 $IP4s -j ACCEPT	
	#$IPT $OUT $TCP $DPORT 902 $IP4s -j ACCEPT	
        #$IPT $OUT $TCP $DPORT 110 $IP4s -j ACCEPT	
        #$IPT $OUT $TCP $DPORT 443 $IP4s -j ACCEPT	
	#$IPT $OUT $TCP $DPORT 5801 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 5802 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 5803 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 5804 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 5901 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 5902 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 5903 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 5904 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 6001 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 6002 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 6003 $IP4s -j ACCEPT
	#$IPT $OUT $TCP $DPORT 6004 $IP4s -j ACCEPT
        #$IPT $OUT $TCP $DPORT 31337 $IP4s -j ACCEPT	
	$IPT $OUT -p icmp --icmp-type 8 $IP4s -j ACCEPT

	### .5

#ftp
#HIGH="1024:65535"
#
#        $IPT $IN $TCP $DPORT 20 $IP5d -j ACCEPT	
#        $IPT $IN $UDP $DPORT 20 $IP5d -j ACCEPT	
#        $IPT $IN $TCP $DPORT 21 $IP5d -j ACCEPT	
#        $IPT $IN $UDP $DPORT 21 $IP5d -j ACCEPT	
#        #$IPT $IN $TCP $DPORT $HIGH $IP5d -j ACCEPT	
#        #$IPT $IN $UDP $DPORT $HIGH $IP5d -j ACCEPT	
        
	$IPT $IN $TCP $DPORT 8080 $IP5d -j ACCEPT	
	# poesi
	$IPT $IN $TCP $DPORT 110 $IP5d -j ACCEPT	
	$IPT $IN $TCP $DPORT 6885 $IP5d -j ACCEPT
	$IPT $IN $TCP $DPORT 16063 $IP5d -j ACCEPT
	$IPT $IN $UDP $DPORT 16063 $IP5d -j ACCEPT
	$IPT $IN $TCP $DPORT 4346 $IP5d -j ACCEPT

	$IPT $IN $TCP $DPORT 7924 $IP5d -j ACCEPT
	$IPT $IN $UDP $DPORT 7924 $IP5d -j ACCEPT

#	$IPT $OUT $TCP $DPORT 20 $IP5s -j ACCEPT
#	$IPT $OUT $UDP $DPORT 21 $IP5s -j ACCEPT
#	$IPT $OUT $TCP $DPORT 21 $IP5s -j ACCEPT
#	$IPT $OUT $UDP $DPORT 21 $IP5s -j ACCEPT
#	#$IPT $OUT $TCP $DPORT $HIGH $IP5s -j ACCEPT
#	#$IPT $OUT $UDP $DPORT $HIGH $IP5s -j ACCEPT
	
	$IPT $OUT $TCP $DPORT 22 $IP5s -j ACCEPT
	$IPT $OUT $TCP $DPORT 25 $IP5s -j ACCEPT
	$IPT $OUT $TCP $DPORT 53 $IP5s -j ACCEPT
	$IPT $OUT $UDP $DPORT 53 $IP5s -j ACCEPT
	$IPT $OUT $TCP $DPORT 80 $IP5s -j ACCEPT	
        $IPT $OUT $TCP $DPORT 110 $IP5s -j ACCEPT	
        $IPT $OUT $TCP $DPORT 143 $IP5s -j ACCEPT	
        $IPT $OUT $TCP $DPORT 443 $IP5s -j ACCEPT	
        $IPT $OUT $TCP $DPORT 1755 $IP5s -j ACCEPT

        $IPT $OUT $TCP $DPORT 6667 $IP5s -j ACCEPT
        $IPT $OUT $TCP $DPORT 5190 $IP5s -j ACCEPT
        $IPT $OUT $TCP $DPORT 8000 $IP5s -j ACCEPT
        $IPT $OUT $TCP $DPORT 8080 $IP5s -j ACCEPT

	# www.portal.at
        $IPT $OUT $TCP $DPORT 9080 $IP5s -j ACCEPT
	# telebanking psk
        $IPT $OUT $TCP $DPORT 3048 $IP5s -j ACCEPT

	# poesi
        $IPT $OUT $TCP $DPORT 4346 $IP5s -j ACCEPT
        $IPT $OUT $TCP $DPORT 16063 $IP5s -j ACCEPT
	$IPT $OUT $UDP $DPORT 16063 $IP5s -j ACCEPT
        $IPT $OUT $TCP $DPORT 6885 $IP5s -j ACCEPT

        $IPT $OUT $TCP $DPORT 7924 $IP5s -j ACCEPT
	$IPT $OUT $UDP $DPORT 7924 $IP5s -j ACCEPT

# FTP

HIGH_PORTS="1024:65535"
##rückwand
iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
## verbindungsaufbau ftp:
iptables -A FORWARD -o eth0 -p tcp --sport $HIGH_PORTS --dport ftp -m state --state NEW -j ACCEPT
## passives ftp:
iptables -A FORWARD -o eth0 -p tcp --sport $HIGH_PORTS --dport $HIGH_PORTS -m state --state NEW -j ACCEPT
#
# verbindungsaufbau ftp:
iptables -A FORWARD -o eth0 -p udp --sport $HIGH_PORTS --dport ftp -m state --state NEW -j ACCEPT
## passives ftp:
iptables -A FORWARD -o eth0 -p udp --sport $HIGH_PORTS --dport $HIGH_PORTS -m state --state NEW -j ACCEPT
#
# PTF



iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 16063 -j DNAT --to-destination 193.170.221.5:16063

iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 4346 -j DNAT --to-destination 193.170.221.5:6346
	# webmail klockwork
	$IPT $OUT $TCP $DPORT 8888 $IP5s -j ACCEPT

	$IPT $OUT -p icmp --icmp-type 8 $IP5s -j ACCEPT
 
	### alle
	$IPT -m physdev --physdev-is-bridged -m state --state ESTABLISHED,RELATED -j ACCEPT
	
	### dropall
	$IPT -j DROP
	
	rc_status -v
	;;
    stop)
	echo -n "Shutting down firewall "

	iptables -F

	rc_status -v
	;;
    restart)
	$0 stop
	$0 start
	rc_status
	;;
    status)
	echo -n "Checking for service firewall "
	
	iptables -L
	
	rc_status -v
	;;
    *)
	echo "Usage: $0 {start|stop|status|restart}"
	exit 1
	;;
esac
rc_exit
firewall.txt · Zuletzt geändert: 2010/06/18 23:11 (Externe Bearbeitung)

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