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#!/bin/bash
 1 
#!/bin/bash
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# $Id: alcasar-iptables.sh 1386 2014-06-12 14:53:07Z richard $
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# $Id: alcasar-iptables.sh 1390 2014-06-17 12:37:37Z richard $
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# Script de mise en place des regles du parefeu d'Alcasar (mode normal)
 3 
# Script de mise en place des regles du parefeu d'Alcasar (mode normal)
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# This script writes the netfilter rules for ALCASAR
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# This script writes the netfilter rules for ALCASAR
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# Rexy - 3abtux - CPN
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# Rexy - 3abtux - CPN
6 
#
 6 
#
7 
# Reminders
 7 
# Reminders
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# There are four channels for log :
 8 
# There are four channels for log :
9 
#	1 tracability of the consultation equipment with The 'Netflow' kernel module (iptables target = NETFLOW);
 9 
#	1 tracability of the consultation equipment with The 'Netflow' kernel module (iptables target = NETFLOW);
10 
#	2 protection of ALCASAR with the Ulog group 1 (default group)
10 
#	2 protection of ALCASAR with the Ulog group 1 (default group)
11 
#	3 SSH on ALCASAR with the Ulog group 2;
 11 
#	3 SSH on ALCASAR with the Ulog group 2;
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#	4 extern access attempts on ALCASAR with the Ulog group 3.
 12 
#	4 extern access attempts on ALCASAR with the Ulog group 3.
13 
# The bootps/dhcp (67) port is always open on tun0/eth1 by coova
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# The bootps/dhcp (67) port is always open on tun0/eth1 by coova
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conf_file="/usr/local/etc/alcasar.conf"
 14 
conf_file="/usr/local/etc/alcasar.conf"
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private_ip_mask=`grep PRIVATE_IP= $conf_file|cut -d"=" -f2`
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private_ip_mask=`grep PRIVATE_IP= $conf_file|cut -d"=" -f2`
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private_ip_mask=${private_ip_mask:=192.168.182.1/24}
 16 
private_ip_mask=${private_ip_mask:=192.168.182.1/24}
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PRIVATE_IP=`echo $private_ip_mask | cut -d"/" -f1`			# ALCASAR LAN IP address
 17 
PRIVATE_IP=`echo $private_ip_mask | cut -d"/" -f1`			# ALCASAR LAN IP address
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private_network=`/bin/ipcalc -n $private_ip_mask|cut -d"=" -f2`		# LAN IP address (ie.: 192.168.182.0)
 18 
private_network=`/bin/ipcalc -n $private_ip_mask|cut -d"=" -f2`		# LAN IP address (ie.: 192.168.182.0)
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private_prefix=`/bin/ipcalc -p $private_ip_mask|cut -d"=" -f2`		# LAN prefix (ie. 24)
 19 
private_prefix=`/bin/ipcalc -p $private_ip_mask|cut -d"=" -f2`		# LAN prefix (ie. 24)
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PRIVATE_NETWORK_MASK=$private_network/$private_prefix			# Lan IP address + prefix (192.168.182.0/24)
 20 
PRIVATE_NETWORK_MASK=$private_network/$private_prefix			# Lan IP address + prefix (192.168.182.0/24)
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public_ip_mask=`grep PUBLIC_IP= $conf_file|cut -d"=" -f2`		# ALCASAR WAN IP address
 21 
public_ip_mask=`grep PUBLIC_IP= $conf_file|cut -d"=" -f2`		# ALCASAR WAN IP address
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PUBLIC_IP=`echo $public_ip_mask | cut -d"/" -f1`
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PUBLIC_IP=`echo $public_ip_mask | cut -d"/" -f1`
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dns1=`grep DNS1= $conf_file|cut -d"=" -f2`				# first public DNS server
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dns1=`grep DNS1= $conf_file|cut -d"=" -f2`				# first public DNS server
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dns1=${dns1:=208.67.220.220}
 24 
dns1=${dns1:=208.67.220.220}
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dns2=`grep DNS2= $conf_file|cut -d"=" -f2`				# second public DNS server
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dns2=`grep DNS2= $conf_file|cut -d"=" -f2`				# second public DNS server
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dns2=${dns2:=208.67.222.222}
 26 
dns2=${dns2:=208.67.222.222}
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DNSSERVERS="$dns1,$dns2"						# first and second DNS IP servers addresses
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DNSSERVERS="$dns1,$dns2"						# first and second DNS IP servers addresses
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PROTOCOLS_FILTERING=`grep PROTOCOLS_FILTERING= $conf_file|cut -d"=" -f2`	# Network protocols filter (on/off)
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PROTOCOLS_FILTERING=`grep PROTOCOLS_FILTERING= $conf_file|cut -d"=" -f2`	# Network protocols filter (on/off)
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PROTOCOLS_FILTERING=${PROTOCOLS_FILTERING:=off}
 29 
PROTOCOLS_FILTERING=${PROTOCOLS_FILTERING:=off}
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DNS_FILTERING=`grep DNS_FILTERING= $conf_file|cut -d"=" -f2`		# DNS and URLs filter (on/off)
 30 
DNS_FILTERING=`grep DNS_FILTERING= $conf_file|cut -d"=" -f2`		# DNS and URLs filter (on/off)
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DNS_FILTERING=${DNS_FILTERING:=off}
 31 
DNS_FILTERING=${DNS_FILTERING:=off}
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BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
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BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
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WL_IP_CAT="/usr/local/share/iptables-wl-enabled"			# categories files of the WhiteListed IP
 - 
 
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BL_IP_OSSI="/usr/local/share/iptables-bl/ossi"				# ossi categoty
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BL_IP_OSSI="/usr/local/share/iptables-bl/ossi"				# ossi categoty
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WL_IP_OSSI="/usr/local/share/ossi-ip-wl"				# ip of the whitelist
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WL_IP_OSSI="/usr/local/share/ossi-ip-wl"				# ip of the whitelist
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WL_IP_OSSI_DOMAIN="/usr/local/share/iptables-wl/ossi"			# ip of the domain names whitelist
 - 
 
37 
TMP_users_set_save="/tmp/users_set_save"				# tmp file for backup users set
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TMP_users_set_save="/tmp/users_set_save"				# tmp file for backup users set
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TMP_set_save="/tmp/ipset_save"						# tmp file for blacklist and whitelist creation
 36 
TMP_set_save="/tmp/ipset_save"						# tmp file for blacklist and whitelist creation
39 
QOS=`grep QOS= $conf_file|cut -d"=" -f2`				# QOS (on/off)
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QOS=`grep QOS= $conf_file|cut -d"=" -f2`				# QOS (on/off)
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QOS=${QOS:=off}
 38 
QOS=${QOS:=off}
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SSH=`grep SSH= $conf_file|cut -d"=" -f2`				# sshd active (on/off)
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SSH=`grep SSH= $conf_file|cut -d"=" -f2`				# sshd active (on/off)
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SSH=${SSH:=off}
 40 
SSH=${SSH:=off}
43 
SSH_ADMIN_FROM=`grep SSH_ADMIN_FROM= $conf_file|cut -d"=" -f2`
 41 
SSH_ADMIN_FROM=`grep SSH_ADMIN_FROM= $conf_file|cut -d"=" -f2`
44 
SSH_ADMIN_FROM=${SSH_ADMIN_FROM:="0.0.0.0/0.0.0.0"}			# WAN IP address to reduce ssh access (all ip allowed on LAN side)
 42 
SSH_ADMIN_FROM=${SSH_ADMIN_FROM:="0.0.0.0/0.0.0.0"}			# WAN IP address to reduce ssh access (all ip allowed on LAN side)
45 
LDAP=`grep LDAP= $conf_file|cut -d"=" -f2`				# LDAP external server active (on/off)
 43 
LDAP=`grep LDAP= $conf_file|cut -d"=" -f2`				# LDAP external server active (on/off)
46 
LDAP=${LDAP:=off}
 44 
LDAP=${LDAP:=off}
47 
LDAP_IP=`grep LDAP_IP= $conf_file|cut -d"=" -f2`			# WAN IP address to reduce LDAP WAN access (all ip allowed on LAN side)
 45 
LDAP_IP=`grep LDAP_IP= $conf_file|cut -d"=" -f2`			# WAN IP address to reduce LDAP WAN access (all ip allowed on LAN side)
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LDAP_IP=${LDAP_IP:="0.0.0.0/0.0.0.0"}
 46 
LDAP_IP=${LDAP_IP:="0.0.0.0/0.0.0.0"}
49 
EXTIF="enp1s0"
 47 
EXTIF="enp1s0"
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INTIF="enp2s0"
 48 
INTIF="enp2s0"
51 
TUNIF="tun0"								# listen device for chilli daemon
 49 
TUNIF="tun0"								# listen device for chilli daemon
52 
IPTABLES="/sbin/iptables"
 50 
IPTABLES="/sbin/iptables"
53 
IP_REHABILITEES="/etc/dansguardian/lists/exceptioniplist"		# Rehabilitated IP
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IP_REHABILITEES="/etc/dansguardian/lists/exceptioniplist"		# Rehabilitated IP
54 
SAVE_DIR="/etc/sysconfig"						# Saving path
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SAVE_DIR="/etc/sysconfig"						# Saving path
55 
 
 53 
 
56 
# Sauvegarde des SET des utilisateurs connectés si ils existent
 54 
# Sauvegarde des SET des utilisateurs connectés si ils existent
57 
# Saving SET of connected users if it exists
 55 
# Saving SET of connected users if it exists
58 
ipset list no_filtering_set 1>/dev/null 2>&1
 56 
ipset list no_filtering_set 1>/dev/null 2>&1
59 
if [ $? -eq 0 ];
 57 
if [ $? -eq 0 ];
60 
then
 58 
then
61 
	ipset save no_filtering_set > $TMP_users_set_save
 59 
	ipset save no_filtering_set > $TMP_users_set_save
62 
	ipset save havp_set >> $TMP_users_set_save
 60 
	ipset save havp_set >> $TMP_users_set_save
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	ipset save havp_bl_set >> $TMP_users_set_save
 61 
	ipset save havp_bl_set >> $TMP_users_set_save
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	ipset save havp_wl_set >> $TMP_users_set_save
 62 
	ipset save havp_wl_set >> $TMP_users_set_save
65 
fi
 63 
fi
66 
 
 64 
 
67 
# loading of NetFlow probe (ipt_NETFLOW kernel module)
 65 
# loading of NetFlow probe (ipt_NETFLOW kernel module)
68 
modprobe ipt_NETFLOW destination=127.0.0.1:2055
 66 
modprobe ipt_NETFLOW destination=127.0.0.1:2055
69 
 
 67 
 
70 
# Effacement des règles existantes
 68 
# Effacement des règles existantes
71 
# Flush all existing rules
 69 
# Flush all existing rules
72 
$IPTABLES -F
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$IPTABLES -F
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$IPTABLES -t nat -F
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$IPTABLES -t nat -F
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$IPTABLES -t mangle -F
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$IPTABLES -t mangle -F
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$IPTABLES -F INPUT
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$IPTABLES -F INPUT
76 
$IPTABLES -F FORWARD
 74 
$IPTABLES -F FORWARD
77 
$IPTABLES -F OUTPUT
 75 
$IPTABLES -F OUTPUT
78 
 
 76 
 
79 
# Suppression des chaines utilisateurs sur les tables filter et nat
 77 
# Suppression des chaines utilisateurs sur les tables filter et nat
80 
# Flush non default rules on filter and nat tables
 78 
# Flush non default rules on filter and nat tables
81 
$IPTABLES -X
 79 
$IPTABLES -X
82 
$IPTABLES -t nat -X
 80 
$IPTABLES -t nat -X
83 
 
 81 
 
84 
# Stratégies par défaut
 82 
# Stratégies par défaut
85 
# Default policies
 83 
# Default policies
86 
$IPTABLES -P INPUT DROP
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$IPTABLES -P INPUT DROP
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$IPTABLES -P FORWARD DROP
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$IPTABLES -P FORWARD DROP
88 
$IPTABLES -P OUTPUT DROP
 86 
$IPTABLES -P OUTPUT DROP
89 
$IPTABLES -t nat -P PREROUTING ACCEPT
 87 
$IPTABLES -t nat -P PREROUTING ACCEPT
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$IPTABLES -t nat -P POSTROUTING ACCEPT
 88 
$IPTABLES -t nat -P POSTROUTING ACCEPT
91 
$IPTABLES -t nat -P OUTPUT ACCEPT
 89 
$IPTABLES -t nat -P OUTPUT ACCEPT
92 
 
 90 
 
93 
# destruction de tous les SET
 91 
# destruction de tous les SET
94 
# destroy all SET
 92 
# destroy all SET
95 
ipset destroy
 93 
ipset destroy
96 
 
 94 
 
97 
# Calcul de la taille du set de la blacklist
 95 
# Calcul de la taille du set de la blacklist
98 
# Compute the blacklist set length
 96 
# Compute the blacklist set length
99 
cd $BL_IP_CAT
 97 
cd $BL_IP_CAT
100 
set_bl_length=$(($(wc -l * | awk '{print $1}' | tail -n 1)+$(wc -l $BL_IP_OSSI | awk '{print $1}')))
 98 
set_bl_length=$(($(wc -l * | awk '{print $1}' | tail -n 1)+$(wc -l $BL_IP_OSSI | awk '{print $1}')))
101 
 
 99 
 
102 
# Création du fichier set temporaire, remplissage, chargement et suppression
 100 
# Création du fichier set temporaire, remplissage, chargement et suppression
103 
# Creating the temporary set file, filling, loading and deleting
 101 
# Creating the temporary set file, filling, loading and deleting
104 
echo "create blacklist_ip_blocked hash:net family inet hashsize 1024 maxelem $set_bl_length" > $TMP_set_save
 102 
echo "create blacklist_ip_blocked hash:net family inet hashsize 1024 maxelem $set_bl_length" > $TMP_set_save
105 
for category in `ls -1 | cut -d '@' -f1`
 103 
for category in `ls -1 | cut -d '@' -f1`
106 
do
 104 
do
107 
	cat $BL_IP_CAT/$category >> $TMP_set_save
 105 
	cat $BL_IP_CAT/$category >> $TMP_set_save
108 
done
 106 
done
109 
cat $BL_IP_OSSI >> $TMP_set_save
 107 
cat $BL_IP_OSSI >> $TMP_set_save
110 
ipset -! restore < $TMP_set_save
 108 
ipset -! restore < $TMP_set_save
111 
rm -f $TMP_set_save
 109 
rm -f $TMP_set_save
112 
 
 110 
 
113 
# Extraction des ip réhabilitées
 111 
# Extraction des ip réhabilitées
114 
# Extracting rehabilitated ip
 112 
# Extracting rehabilitated ip
115 
for ip in $(cat $IP_REHABILITEES)
 113 
for ip in $(cat $IP_REHABILITEES)
116 
do
 114 
do
117 
	ipset del blacklist_ip_blocked $ip
 115 
	ipset del blacklist_ip_blocked $ip
118 
done
 116 
done
119 
 
 117 
 
120 
# Calcul de la taille du set de la whitelist
 - 
 
121 
# Compute the whitelist set length
 - 
 
122 
cd $WL_IP_CAT
 - 
 
123 
set_wl_length=$(($(wc -l * | awk '{print $1}' | tail -n 1)+$(wc -l $WL_IP_OSSI | awk '{print $1}')+$(wc -l $WL_IP_OSSI_DOMAIN | awk '{print $1}')))
 - 
 
124 
 
 - 
 
125 
# Création du fichier set temporaire, remplissage, chargement et suppression
 118 
# Création du fichier set temporaire, remplissage, chargement et suppression
126 
# Creating the temporary set file, filling, loading and deleting
 119 
# Creating the temporary set file, filling, loading and deleting
127 
echo "create whitelist_ip_allowed hash:net family inet hashsize 1024 maxelem $set_wl_length" > $TMP_set_save
 120 
echo "create whitelist_ip_allowed hash:net family inet hashsize 1024" > $TMP_set_save
128 
for category in `ls -1 | cut -d '@' -f1`
 - 
 
129 
do
 - 
 
130 
	cat $WL_IP_CAT/$category >> $TMP_set_save
 - 
 
131 
done
 - 
 
132 
cat $WL_IP_OSSI >> $TMP_set_save
 121 
cat $WL_IP_OSSI >> $TMP_set_save
133 
cat $WL_IP_OSSI_DOMAIN >> $TMP_set_save
 - 
 
134 
ipset -! restore < $TMP_set_save
 122 
ipset -! restore < $TMP_set_save
135 
rm -f $TMP_set_save
 123 
rm -f $TMP_set_save
136 
 
 124 
 
137 
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET
125 
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET
138 
# Restoring the connected users SETs if available, otherwise creating SETs
 126 
# Restoring the connected users SETs if available, otherwise creating SETs
139 
if [ -e $TMP_users_set_save ];
 127 
if [ -e $TMP_users_set_save ];
140 
then
 128 
then
141 
	ipset -! restore < $TMP_users_set_save
 129 
	ipset -! restore < $TMP_users_set_save
142 
	rm -f $TMP_users_set_save
 130 
	rm -f $TMP_users_set_save
143 
else
 131 
else
144 
	ipset create no_filtering_set hash:net hashsize 1024
 132 
	ipset create no_filtering_set hash:net hashsize 1024
145 
	ipset create havp_set hash:net hashsize 1024
 133 
	ipset create havp_set hash:net hashsize 1024
146 
	ipset create havp_bl_set hash:net hashsize 1024
 134 
	ipset create havp_bl_set hash:net hashsize 1024
147 
	ipset create havp_wl_set hash:net hashsize 1024
 135 
	ipset create havp_wl_set hash:net hashsize 1024
148 
fi
 136 
fi
149 
 
 137 
 
150 
#############################
 138 
#############################
151 
#       PREROUTING          #
 139 
#       PREROUTING          #
152 
#############################
 140 
#############################
153 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement à DansGuardian pour pouvoir les rejeter en INPUT
 141 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement à DansGuardian pour pouvoir les rejeter en INPUT
154 
# mark (and log) the dansguardian bypass attempts in order to DROP them in INPUT rules
 142 
# mark (and log) the dansguardian bypass attempts in order to DROP them in INPUT rules
155 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j ULOG --ulog-prefix "RULE direct-proxy -- DENY "
 143 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j ULOG --ulog-prefix "RULE direct-proxy -- DENY "
156 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
 144 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
157 
 
 145 
 
158 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port udp 54 pour pouvoir les rejeter en INPUT
 146 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port udp 54 pour pouvoir les rejeter en INPUT
159 
# Mark (and log) the udp 54 direct attempts to REJECT them in INPUT rules
 147 
# Mark (and log) the udp 54 direct attempts to REJECT them in INPUT rules
160 
# $IPTABLES -A PREROUTING -t nat -i $TUNIF -p udp -d $PRIVATE_IP -m udp --dport 54 -j ULOG --ulog-prefix "RULE DNS-proxy -- DENY "
 148 
# $IPTABLES -A PREROUTING -t nat -i $TUNIF -p udp -d $PRIVATE_IP -m udp --dport 54 -j ULOG --ulog-prefix "RULE DNS-proxy -- DENY "
161 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 2
 149 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 2
162 
 
 150 
 
163 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port udp 55 pour pouvoir les rejeter en INPUT
 151 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port udp 55 pour pouvoir les rejeter en INPUT
164 
# Mark (and log) the udp 55 direct attempts to REJECT them in INPUT rules
 152 
# Mark (and log) the udp 55 direct attempts to REJECT them in INPUT rules
165 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 55 -j MARK --set-mark 3
 153 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 55 -j MARK --set-mark 3
166 
 
 154 
 
167 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port 8090 pour pouvoir les rejeter en INPUT
 155 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port 8090 pour pouvoir les rejeter en INPUT
168 
# Mark (and log) the 8090 direct attempts to REJECT them in INPUT rules
 156 
# Mark (and log) the 8090 direct attempts to REJECT them in INPUT rules
169 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8090 -j MARK --set-mark 4
 157 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8090 -j MARK --set-mark 4
170 
 
 158 
 
171 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port 8091 pour pouvoir les rejeter en INPUT
 159 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port 8091 pour pouvoir les rejeter en INPUT
172 
# Mark (and log) the 8091 direct attempts to REJECT them in INPUT rules
 160 
# Mark (and log) the 8091 direct attempts to REJECT them in INPUT rules
173 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8091 -j MARK --set-mark 5
 161 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8091 -j MARK --set-mark 5
174 
 
 162 
 
175 
# Aiguillage des flux DNS
 163 
# Aiguillage des flux DNS
176 
# Switching DNS streams
 164 
# Switching DNS streams
177 
# havp_bl_set --> redirection vers le port 54
 165 
# havp_bl_set --> redirection vers le port 54
178 
# havp_bl_set --> redirect to port 54
 166 
# havp_bl_set --> redirect to port 54
179 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl_set src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 54
 167 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl_set src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 54
180 
# havp_wl_set --> redirection vers le port 55
 168 
# havp_wl_set --> redirection vers le port 55
181 
# havp_wl_set --> redirect to port 55
 169 
# havp_wl_set --> redirect to port 55
182 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl_set src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 55
 170 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl_set src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 55
183 
 
 171 
 
184 
# Redirection des requêtes HTTP des IP de la blacklist vers ALCASAR (page 'accès interdit') pour le set havp_bl_set
 172 
# Redirection des requêtes HTTP des IP de la blacklist vers ALCASAR (page 'accès interdit') pour le set havp_bl_set
185 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl_set src -m set --match-set blacklist_ip_blocked dst -p tcp --dport http -j REDIRECT --to-port 80
 173 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl_set src -m set --match-set blacklist_ip_blocked dst -p tcp --dport http -j REDIRECT --to-port 80
186 
 
 174 
 
187 
# Redirection des requêtes HTTP des IP qui ne sont pas dans la whitelist vers ALCASAR (page 'accès interdit') pour le set havp_wl_set
 - 
 
188 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl_set src -m set ! --match-set whitelist_ip_allowed dst -p tcp --dport http -j REDIRECT --to-port 80
 - 
 
189 
 
 - 
 
190 
# Journalisation des requètes HTTP vers Internet (seulement les paquets SYN) - Les autres protocoles sont journalisés en FORWARD par netflow
 175 
# Journalisation des requètes HTTP vers Internet (seulement les paquets SYN) - Les autres protocoles sont journalisés en FORWARD par netflow
191 
## Log HTTP requests to Internet (only syn packets) - Other protocols are log in FORWARD by netflow
 176 
## Log HTTP requests to Internet (only syn packets) - Other protocols are log in FORWARD by netflow
192 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p tcp --dport http -m state --state NEW -j ULOG --ulog-prefix "RULE F_http -- ACCEPT "
 177 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p tcp --dport http -m state --state NEW -j ULOG --ulog-prefix "RULE F_http -- ACCEPT "
193 
 
 178 
 
194 
# Redirection des requêtes HTTP sortantes vers HAVP (8091) pour le set havp_set
 179 
# Redirection des requêtes HTTP sortantes vers HAVP (8091) pour le set havp_set
195 
# Redirect outbound HTTP requests to HAVP (8091) for the set havp_set
 180 
# Redirect outbound HTTP requests to HAVP (8091) for the set havp_set
196 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_set src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8091
 181 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_set src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8091
197 
 
 182 
 
198 
# Redirection des requêtes HTTP sortantes vers DansGuardian (proxy transparent) pour le set havp_bl_set
 183 
# Redirection des requêtes HTTP sortantes vers DansGuardian (proxy transparent) pour le set havp_bl_set
199 
# Redirect outbound HTTP requests to DansGuardian (transparent proxy) for the set havp_bl_set
 184 
# Redirect outbound HTTP requests to DansGuardian (transparent proxy) for the set havp_bl_set
200 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl_set src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8080
 185 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl_set src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8080
201 
 
 186 
 
202 
# Redirection des requêtes HTTP sortantes vers HAVP pour le set havp_wl_set
 187 
# Redirection des requêtes HTTP sortantes vers HAVP pour le set havp_wl_set
203 
# Redirect outbound HTTP requests to HAVP for the set havp_wl_set
 188 
# Redirect outbound HTTP requests to HAVP for the set havp_wl_set
204 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl_set src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8091
 189 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl_set src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8091
205 
 
 190 
 
206 
# Redirection des requêtes NTP vers le serveur NTP local
 191 
# Redirection des requêtes NTP vers le serveur NTP local
207 
# Redirect NTP request in local NTP server
 192 
# Redirect NTP request in local NTP server
208 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
 193 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
209 
 
 194 
 
210 
#############################
 195 
#############################
211 
#         INPUT             #
 196 
#         INPUT             #
212 
#############################
 197 
#############################
213 
 
 198 
 
214 
# Tout passe sur loopback
 199 
# Tout passe sur loopback
215 
# accept all on loopback
 200 
# accept all on loopback
216 
$IPTABLES -A INPUT -i lo -j ACCEPT
 201 
$IPTABLES -A INPUT -i lo -j ACCEPT
217 
$IPTABLES -A OUTPUT -o lo -j ACCEPT
 202 
$IPTABLES -A OUTPUT -o lo -j ACCEPT
218 
 
 203 
 
219 
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
 204 
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
220 
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
 205 
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
221 
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
 206 
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
222 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
 207 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
223 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
 208 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
224 
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
 209 
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
225 
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
 210 
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
226 
 
 211 
 
227 
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
 212 
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
228 
# Drop broadcast & multicast on EXTIF to avoid log
213 
# Drop broadcast & multicast on EXTIF to avoid log
229 
$IPTABLES -A INPUT -i $EXTIF -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
 214 
$IPTABLES -A INPUT -i $EXTIF -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
230 
 
 215 
 
231 
# On autorise les retours de connexions légitimes par INPUT
 216 
# On autorise les retours de connexions légitimes par INPUT
232 
# Conntrack on INPUT
 217 
# Conntrack on INPUT
233 
$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
 218 
$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
234 
 
 219 
 
235 
# On interdit les connexions directes au port utilisé par DansGuardian (8080). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
 220 
# On interdit les connexions directes au port utilisé par DansGuardian (8080). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
236 
# Deny direct connections on DansGuardian port (8080). The concerned paquets are marked and logged in mangle table (PREROUTING)
 221 
# Deny direct connections on DansGuardian port (8080). The concerned paquets are marked and logged in mangle table (PREROUTING)
237 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset
 222 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset
238 
 
 223 
 
239 
# Autorisation des connexions légitimes à DansGuardian
224 
# Autorisation des connexions légitimes à DansGuardian
240 
# Allow connections for DansGuardian
 225 
# Allow connections for DansGuardian
241 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m state --state NEW --syn -j ACCEPT
 226 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m state --state NEW --syn -j ACCEPT
242 
 
 227 
 
243 
# On interdit les connexions directes au port UDP 54. Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 228 
# On interdit les connexions directes au port UDP 54. Les packets concernés ont été marqués dans la table mangle (PREROUTING)
244 
# Deny direct connections on UDP 54. The concerned paquets are marked in mangle table (PREROUTING)
 229 
# Deny direct connections on UDP 54. The concerned paquets are marked in mangle table (PREROUTING)
245 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 2 -j REJECT --reject-with icmp-port-unreachable
 230 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 2 -j REJECT --reject-with icmp-port-unreachable
246 
 
 231 
 
247 
# On interdit les connexions directes au port UDP 55. Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 232 
# On interdit les connexions directes au port UDP 55. Les packets concernés ont été marqués dans la table mangle (PREROUTING)
248 
# Deny direct connections on UDP 55. The concerned paquets are marked in mangle table (PREROUTING)
 233 
# Deny direct connections on UDP 55. The concerned paquets are marked in mangle table (PREROUTING)
249 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable
 234 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable
250 
 
 235 
 
251 
# On interdit les connexions directes au port 8090. Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 236 
# On interdit les connexions directes au port 8090. Les packets concernés ont été marqués dans la table mangle (PREROUTING)
252 
# Deny direct connections on 8090. The concerned paquets are marked in mangle table (PREROUTING)
 237 
# Deny direct connections on 8090. The concerned paquets are marked in mangle table (PREROUTING)
253 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8090 -m mark --mark 4 -j REJECT --reject-with tcp-reset
 238 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8090 -m mark --mark 4 -j REJECT --reject-with tcp-reset
254 
 
 239 
 
255 
# On interdit les connexions directes au port 8091. Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 240 
# On interdit les connexions directes au port 8091. Les packets concernés ont été marqués dans la table mangle (PREROUTING)
256 
# Deny direct connections on 8091. The concerned paquets are marked in mangle table (PREROUTING)
 241 
# Deny direct connections on 8091. The concerned paquets are marked in mangle table (PREROUTING)
257 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8091 -m mark --mark 5 -j REJECT --reject-with tcp-reset
 242 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8091 -m mark --mark 5 -j REJECT --reject-with tcp-reset
258 
 
 243 
 
259 
# Autorisation des connexions légitimes à HAVP
244 
# Autorisation des connexions légitimes à HAVP
260 
# Allow connections for HAVP
 245 
# Allow connections for HAVP
261 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8090 -m state --state NEW --syn -j ACCEPT
 246 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8090 -m state --state NEW --syn -j ACCEPT
262 
 
 247 
 
263 
# Autorisation des connexions légitimes à HAVP
248 
# Autorisation des connexions légitimes à HAVP
264 
# Allow connections for HAVP
 249 
# Allow connections for HAVP
265 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8091 -m state --state NEW --syn -j ACCEPT
 250 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8091 -m state --state NEW --syn -j ACCEPT
266 
 
 251 
 
267 
# autorisation des connexion légitime à DNSMASQ (avec blacklist)
 252 
# autorisation des connexion légitime à DNSMASQ (avec blacklist)
268 
# Allow connections for DNSMASQ (with blacklist)
 253 
# Allow connections for DNSMASQ (with blacklist)
269 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
 254 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
270 
 
 255 
 
271 
# autorisation des connexion légitime à DNSMASQ (avec whitelist)
 256 
# autorisation des connexion légitime à DNSMASQ (avec whitelist)
272 
# Allow connections for DNSMASQ (with whitelist)
 257 
# Allow connections for DNSMASQ (with whitelist)
273 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 55 -j ACCEPT
 258 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 55 -j ACCEPT
274 
 
 259 
 
275 
# Accès direct aux services internes
 260 
# Accès direct aux services internes
276 
# Internal services access
 261 
# Internal services access
277 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS non filtré # DNS without blacklist
 262 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS non filtré # DNS without blacklist
278 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
 263 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
279 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
 264 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
280 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport https -j ACCEPT	# Pages d'authentification et MCC # authentication pages and MCC
 265 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport https -j ACCEPT	# Pages d'authentification et MCC # authentication pages and MCC
281 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport http -j ACCEPT	# Page d'avertissement filtrage # Filtering warning pages
 266 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport http -j ACCEPT	# Page d'avertissement filtrage # Filtering warning pages
282 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 3990 -j ACCEPT	# Requêtes de deconnexion usagers # Users logout requests
 267 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 3990 -j ACCEPT	# Requêtes de deconnexion usagers # Users logout requests
283 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport ntp -j ACCEPT	# Serveur local de temps # local time server
 268 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport ntp -j ACCEPT	# Serveur local de temps # local time server
284 
 
 269 
 
285 
# SSHD rules if activate
270 
# SSHD rules if activate
286 
if [ $SSH = on ]
 271 
if [ $SSH = on ]
287 
	then
 272 
	then
288 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -m state --state NEW -j ULOG --ulog-nlgroup 2 --ulog-prefix "RULE ssh-from-LAN -- ACCEPT"
 273 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -m state --state NEW -j ULOG --ulog-nlgroup 2 --ulog-prefix "RULE ssh-from-LAN -- ACCEPT"
289 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -j ACCEPT
 274 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -j ACCEPT
290 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW --syn -j ULOG --ulog-nlgroup 2 --ulog-prefix "RULE ssh-from-WAN -- ACCEPT"
 275 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW --syn -j ULOG --ulog-nlgroup 2 --ulog-prefix "RULE ssh-from-WAN -- ACCEPT"
291 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW -j ACCEPT
 276 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW -j ACCEPT
292 
fi
 277 
fi
293 
 
 278 
 
294 
# Insertion de règles locales
 279 
# Insertion de règles locales
295 
# Here, we add local rules (i.e. VPN from Internet)
 280 
# Here, we add local rules (i.e. VPN from Internet)
296 
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
 281 
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
297 
        . /usr/local/etc/alcasar-iptables-local.sh
 282 
        . /usr/local/etc/alcasar-iptables-local.sh
298 
fi
 283 
fi
299 
 
 284 
 
300 
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
 285 
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
301 
# Deny and log on INPUT from the LAN
 286 
# Deny and log on INPUT from the LAN
302 
$IPTABLES -A INPUT -i $TUNIF -m state --state NEW -j ULOG --ulog-prefix "RULE rej-int -- REJECT "
 287 
$IPTABLES -A INPUT -i $TUNIF -m state --state NEW -j ULOG --ulog-prefix "RULE rej-int -- REJECT "
303 
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
 288 
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
304 
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
 289 
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
305 
 
 290 
 
306 
# interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
 291 
# interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
307 
# Reject INTIF access (only when chilli is down)
 292 
# Reject INTIF access (only when chilli is down)
308 
$IPTABLES -A INPUT -i $INTIF -j ULOG --ulog-prefix "RULE Protect1 -- REJECT "
 293 
$IPTABLES -A INPUT -i $INTIF -j ULOG --ulog-prefix "RULE Protect1 -- REJECT "
309 
$IPTABLES -A INPUT -i $INTIF -j REJECT
 294 
$IPTABLES -A INPUT -i $INTIF -j REJECT
310 
 
 295 
 
311 
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
 296 
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
312 
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
 297 
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
313 
$IPTABLES -A INPUT -i $EXTIF -m state --state NEW -j ULOG --ulog-nlgroup 3 --ulog-qthreshold 10 --ulog-prefix "RULE rej-ext -- DROP"
 298 
$IPTABLES -A INPUT -i $EXTIF -m state --state NEW -j ULOG --ulog-nlgroup 3 --ulog-qthreshold 10 --ulog-prefix "RULE rej-ext -- DROP"
314 
 
 299 
 
315 
#############################
 300 
#############################
316 
#        FORWARD            #
 301 
#        FORWARD            #
317 
#############################
 302 
#############################
318 
 
 303 
 
319 
# Blocage des IPs du SET blacklist_ip_blocked pour le SET havp_bl_set
 304 
# Blocage des IPs du SET blacklist_ip_blocked pour le SET havp_bl_set
320 
# Deny IPs of the SET blacklist_ip_blocked for the set havp_bl_set
 305 
# Deny IPs of the SET blacklist_ip_blocked for the set havp_bl_set
321 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl_set src -m set --match-set blacklist_ip_blocked dst -p icmp -j REJECT --reject-with icmp-port-unreachable
 306 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl_set src -m set --match-set blacklist_ip_blocked dst -p icmp -j REJECT --reject-with icmp-port-unreachable
322 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl_set src -m set --match-set blacklist_ip_blocked dst -p udp -j REJECT --reject-with icmp-port-unreachable
 307 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl_set src -m set --match-set blacklist_ip_blocked dst -p udp -j REJECT --reject-with icmp-port-unreachable
323 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl_set src -m set --match-set blacklist_ip_blocked dst -p tcp -j REJECT --reject-with tcp-reset
 308 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl_set src -m set --match-set blacklist_ip_blocked dst -p tcp -j REJECT --reject-with tcp-reset
324 
 
 309 
 
325 
# Rejet des requêtes DNS vers Internet
 310 
# Rejet des requêtes DNS vers Internet
326 
# Deny forward DNS
 311 
# Deny forward DNS
327 
$IPTABLES -A FORWARD -i $TUNIF -p udp --dport domain -j REJECT --reject-with icmp-port-unreachable
 312 
$IPTABLES -A FORWARD -i $TUNIF -p udp --dport domain -j REJECT --reject-with icmp-port-unreachable
328 
$IPTABLES -A FORWARD -i $TUNIF -p tcp --dport domain -j REJECT --reject-with tcp-reset
 313 
$IPTABLES -A FORWARD -i $TUNIF -p tcp --dport domain -j REJECT --reject-with tcp-reset
329 
 
 314 
 
330 
# Autorisation des retours de connexions légitimes
 315 
# Autorisation des retours de connexions légitimes
331 
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
 316 
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
332 
 
 317 
 
333 
#  If protocols filter is activate
 318 
#  If protocols filter is activate
334 
#if [ $PROTOCOLS_FILTERING = on ]; then
 319 
#if [ $PROTOCOLS_FILTERING = on ]; then
335 
#	# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...)
320 
#	# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...)
336 
#	nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
 321 
#	nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
337 
#	if [ $nb_uamallowed != "0" ]
 322 
#	if [ $nb_uamallowed != "0" ]
338 
#	then
 323 
#	then
339 
#		while read ip_allowed_line
324 
#		while read ip_allowed_line
340 
#		do
 325 
#		do
341 
#			ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
 326 
#			ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
342 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ULOG --ulog-prefix "RULE IP-allowed -- ACCEPT "
 327 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ULOG --ulog-prefix "RULE IP-allowed -- ACCEPT "
343 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NETFLOW
 328 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NETFLOW
344 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
 329 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
345 
#		done < /usr/local/etc/alcasar-uamallowed
 330 
#		done < /usr/local/etc/alcasar-uamallowed
346 
#	fi
 331 
#	fi
347 
#	# Autorisation des protocoles non commentés
 332 
#	# Autorisation des protocoles non commentés
348 
#	# Allow non comment protocols
 333 
#	# Allow non comment protocols
349 
#	while read svc_line
 334 
#	while read svc_line
350 
#	do
 335 
#	do
351 
#		svc_on=`echo $svc_line|cut -b1`
 336 
#		svc_on=`echo $svc_line|cut -b1`
352 
#		if [ $svc_on != "#" ]
 337 
#		if [ $svc_on != "#" ]
353 
#		then
338 
#		then
354 
#			svc_name=`echo $svc_line|cut -d" " -f1`
 339 
#			svc_name=`echo $svc_line|cut -d" " -f1`
355 
#			svc_port=`echo $svc_line|cut -d" " -f2`
 340 
#			svc_port=`echo $svc_line|cut -d" " -f2`
356 
#			if [ $svc_name = "icmp" ]
 341 
#			if [ $svc_name = "icmp" ]
357 
#			then
 342 
#			then
358 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p icmp -j NETFLOW
 343 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p icmp -j NETFLOW
359 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p icmp -j ACCEPT
344 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p icmp -j ACCEPT
360 
#			else
 345 
#			else
361 
#
 346 
#
362 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j ULOG --ulog-prefix "RULE F_TCP-$svc_name -- ACCEPT "
 347 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j ULOG --ulog-prefix "RULE F_TCP-$svc_name -- ACCEPT "
363 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j NETFLOW
 348 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j NETFLOW
364 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j ACCEPT
 349 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j ACCEPT
365 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j ULOG --ulog-prefix "RULE F_UDP-$svc_name -- ACCEPT "
 350 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j ULOG --ulog-prefix "RULE F_UDP-$svc_name -- ACCEPT "
366 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j NETFLOW
 351 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j NETFLOW
367 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j ACCEPT
 352 
#				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j ACCEPT
368 
#			fi
 353 
#			fi
369 
#		fi
 354 
#		fi
370 
#	done < /usr/local/etc/alcasar-services
 355 
#	done < /usr/local/etc/alcasar-services
371 
#	# Rejet explicite des autres protocoles
 356 
#	# Rejet explicite des autres protocoles
372 
#	# reject the others protocols
 357 
#	# reject the others protocols
373 
#	$IPTABLES -A FORWARD -i $TUNIF -j ULOG --ulog-prefix "RULE F_filter -- REJECT "
 358 
#	$IPTABLES -A FORWARD -i $TUNIF -j ULOG --ulog-prefix "RULE F_filter -- REJECT "
374 
#	$IPTABLES -A FORWARD -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
 359 
#	$IPTABLES -A FORWARD -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
375 
#	$IPTABLES -A FORWARD -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
 360 
#	$IPTABLES -A FORWARD -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
376 
#	$IPTABLES -A FORWARD -i $TUNIF -p icmp -j REJECT
361 
#	$IPTABLES -A FORWARD -i $TUNIF -p icmp -j REJECT
377 
#fi
 362 
#fi
378 
 
 363 
 
379 
#  If QOS is activate  #
 364 
#  If QOS is activate  #
380 
if [ $QOS = on ] && [ -e /usr/local/etc/alcasar-iptables-qos.sh ]; then
 365 
if [ $QOS = on ] && [ -e /usr/local/etc/alcasar-iptables-qos.sh ]; then
381 
	. /usr/local/etc/alcasar-iptables-qos.sh
366 
	. /usr/local/etc/alcasar-iptables-qos.sh
382 
fi
 367 
fi
383 
 
 368 
 
384 
# Autorisation des connections sortant du LAN
369 
# Autorisation des connections sortant du LAN
385 
# Allow forward connections with log
 370 
# Allow forward connections with log
386 
#$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ULOG --ulog-prefix "RULE F_all -- ACCEPT "
 371 
#$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ULOG --ulog-prefix "RULE F_all -- ACCEPT "
387 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j NETFLOW
 372 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j NETFLOW
388 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ACCEPT
 373 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ACCEPT
389 
 
 374 
 
390 
#############################
 375 
#############################
391 
#         OUTPUT            #
 376 
#         OUTPUT            #
392 
#############################
 377 
#############################
393 
# On laisse tout sortir sur toutes les cartes sauf celle qui est connectée sur l'extérieur
 378 
# On laisse tout sortir sur toutes les cartes sauf celle qui est connectée sur l'extérieur
394 
# Everything is allowed but traffic through outside network interface
 379 
# Everything is allowed but traffic through outside network interface
395 
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
 380 
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
396 
 
 381 
 
397 
# On autorise les requêtes DNS vers les serveurs DNS identifiés
382 
# On autorise les requêtes DNS vers les serveurs DNS identifiés
398 
# Allow DNS requests to identified DNS servers
 383 
# Allow DNS requests to identified DNS servers
399 
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m state --state NEW -j ACCEPT
 384 
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m state --state NEW -j ACCEPT
400 
 
 385 
 
401 
# On autorise les requêtes HTTP sortantes
 386 
# On autorise les requêtes HTTP sortantes
402 
# HTTP requests are allowed
 387 
# HTTP requests are allowed
403 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
 388 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
404 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
 389 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
405 
 
 390 
 
406 
# On autorise les requêtes FTP
391 
# On autorise les requêtes FTP
407 
# FTP requests are allowed
 392 
# FTP requests are allowed
408 
modprobe ip_conntrack_ftp
 393 
modprobe ip_conntrack_ftp
409 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
 394 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
410 
$IPTABLES -A OUTPUT -o $EXTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
 395 
$IPTABLES -A OUTPUT -o $EXTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
411 
 
 396 
 
412 
# On autorise les requêtes NTP
397 
# On autorise les requêtes NTP
413 
# NTP requests are allowed
 398 
# NTP requests are allowed
414 
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
 399 
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
415 
 
 400 
 
416 
# On autorise les requêtes ICMP (ping)
401 
# On autorise les requêtes ICMP (ping)
417 
# ICMP (ping) requests are allowed
 402 
# ICMP (ping) requests are allowed
418 
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
 403 
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
419 
 
 404 
 
420 
# On autorise les requêtes LDAP si un serveur externe est configué
 405 
# On autorise les requêtes LDAP si un serveur externe est configué
421 
# LDAP requests are allowed if an external server is declared
 406 
# LDAP requests are allowed if an external server is declared
422 
if [ $LDAP = on ]
 407 
if [ $LDAP = on ]
423 
	then
 408 
	then
424 
	$IPTABLES -A OUTPUT -p tcp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
 409 
	$IPTABLES -A OUTPUT -p tcp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
425 
	$IPTABLES -A OUTPUT -p udp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
 410 
	$IPTABLES -A OUTPUT -p udp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
426 
fi
 411 
fi
427 
 
 412 
 
428 
#############################
 413 
#############################
429 
#       POSTROUTING         #
 414 
#       POSTROUTING         #
430 
#############################
 415 
#############################
431 
# Traduction dynamique d'adresse en sortie
 416 
# Traduction dynamique d'adresse en sortie
432 
# Dynamic NAT on EXTIF
 417 
# Dynamic NAT on EXTIF
433 
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
 418 
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
434 
 
 419 
 
435 
# End of script
 420 
# End of script
436 
 
 421 
 
437 
 
 422