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#!/bin/bash
 1 
#!/bin/bash
2 
# $Id: alcasar-iptables.sh 2465 2017-12-17 23:00:14Z richard $
 2 
# $Id: alcasar-iptables.sh 2468 2017-12-27 17:22:39Z richard $
3 
# 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)
4 
# This script writes the netfilter rules for ALCASAR
 4 
# This script writes the netfilter rules for ALCASAR
5 
# Rexy - 3abtux - CPN
 5 
# Rexy - 3abtux - CPN
6 
#
 6 
#
7 
# Reminders
 7 
# Reminders
8 
# 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;
12 
#	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/INTIF by coova
 13 
# The bootps/dhcp (67) port is always open on tun0/INTIF by coova
14 
CONF_FILE="/usr/local/etc/alcasar.conf"
 14 
CONF_FILE="/usr/local/etc/alcasar.conf"
15 
EXTIF=`grep ^EXTIF= $CONF_FILE|cut -d"=" -f2`				# EXTernal InterFace
 15 
EXTIF=`grep ^EXTIF= $CONF_FILE|cut -d"=" -f2`				# EXTernal InterFace
16 
INTIF=`grep ^INTIF= $CONF_FILE|cut -d"=" -f2`				# INTernal InterFace
 16 
INTIF=`grep ^INTIF= $CONF_FILE|cut -d"=" -f2`				# INTernal InterFace
17 
TUNIF="tun0"								# listen device for chilli daemon
 17 
TUNIF="tun0"								# listen device for chilli daemon
18 
private_ip_mask=`grep ^PRIVATE_IP= $CONF_FILE|cut -d"=" -f2`
 18 
private_ip_mask=`grep ^PRIVATE_IP= $CONF_FILE|cut -d"=" -f2`
19 
private_ip_mask=${private_ip_mask:=192.168.182.1/24}
 19 
private_ip_mask=${private_ip_mask:=192.168.182.1/24}
20 
PRIVATE_IP=`echo $private_ip_mask | cut -d"/" -f1`			# ALCASAR LAN IP address
 20 
PRIVATE_IP=`echo $private_ip_mask | cut -d"/" -f1`			# ALCASAR LAN IP address
21 
private_network=`/bin/ipcalc -n $private_ip_mask|cut -d"=" -f2`		# LAN IP address (ie.: 192.168.182.0)
 21 
private_network=`/bin/ipcalc -n $private_ip_mask|cut -d"=" -f2`		# LAN IP address (ie.: 192.168.182.0)
22 
private_prefix=`/bin/ipcalc -p $private_ip_mask|cut -d"=" -f2`		# LAN prefix (ie. 24)
 22 
private_prefix=`/bin/ipcalc -p $private_ip_mask|cut -d"=" -f2`		# LAN prefix (ie. 24)
23 
PRIVATE_NETWORK_MASK=$private_network/$private_prefix			# Lan IP address + prefix (192.168.182.0/24)
 23 
PRIVATE_NETWORK_MASK=$private_network/$private_prefix			# Lan IP address + prefix (192.168.182.0/24)
24 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
 24 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
25 
if [[ "$public_ip_mask" == "dhcp" ]]
 25 
if [[ "$public_ip_mask" == "dhcp" ]]
26 
then
 26 
then
27 
	PTN="\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\/([012]?[0-9]|3[0-2])\b"
 27 
	PTN="\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\/([012]?[0-9]|3[0-2])\b"
28 
	public_ip_mask=`ip addr show $EXTIF | egrep -o $PTN`
 28 
	public_ip_mask=`ip addr show $EXTIF | egrep -o $PTN`
29 
fi
 29 
fi
30 
PUBLIC_IP=`echo $public_ip_mask | cut -d"/" -f1`
 30 
PUBLIC_IP=`echo $public_ip_mask | cut -d"/" -f1`
31 
dns1=`grep ^DNS1= $CONF_FILE|cut -d"=" -f2`
 31 
dns1=`grep ^DNS1= $CONF_FILE|cut -d"=" -f2`
32 
dns2=`grep ^DNS2= $CONF_FILE|cut -d"=" -f2`
 32 
dns2=`grep ^DNS2= $CONF_FILE|cut -d"=" -f2`
33 
dns1=${dns1:=208.67.220.220}
 33 
dns1=${dns1:=208.67.220.220}
34 
dns2=${dns2:=208.67.222.222}
 34 
dns2=${dns2:=208.67.222.222}
35 
DNSSERVERS="$dns1,$dns2"						# first and second public DNS servers
 35 
DNSSERVERS="$dns1,$dns2"						# first and second public DNS servers
36 
BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
 36 
BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
37 
WL_IP_CAT="/usr/local/share/iptables-wl-enabled"			# categories files of the WhiteListed IP
 37 
WL_IP_CAT="/usr/local/share/iptables-wl-enabled"			# categories files of the WhiteListed IP
38 
TMP_users_set_save="/tmp/users_set_save"				# tmp file for backup users set
 38 
TMP_users_set_save="/tmp/users_set_save"				# tmp file for backup users set
39 
TMP_set_save="/tmp/ipset_save"						# tmp file for blacklist and whitelist creation
 39 
TMP_set_save="/tmp/ipset_save"						# tmp file for blacklist and whitelist creation
40 
SSH=`grep ^SSH= $CONF_FILE|cut -d"=" -f2`				# sshd active (on/off)
 40 
SSH=`grep ^SSH= $CONF_FILE|cut -d"=" -f2`				# sshd active (on/off)
41 
SSH=${SSH:=off}
 41 
SSH=${SSH:=off}
42 
SSH_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2`
 42 
SSH_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2`
43 
SSH_ADMIN_FROM=${SSH_ADMIN_FROM:="0.0.0.0/0.0.0.0"}			# WAN IP address to reduce ssh access (all ip allowed on LAN side)
 43 
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)
44 
LDAP=`grep ^LDAP= $CONF_FILE|cut -d"=" -f2`				# LDAP external server active (on/off)
 - 
 
45 
LDAP=${LDAP:=off}
 - 
 
46 
LDAP_SERVER=`grep ^LDAP_SERVER= $CONF_FILE|cut -d"=" -f2`			# WAN IP address to reduce LDAP WAN access (all ip allowed on LAN side)
 - 
 
47 
LDAP_SERVER=${LDAP_SERVER:="0.0.0.0/0.0.0.0"}
 - 
 
48 
IPTABLES="/sbin/iptables"
 44 
IPTABLES="/sbin/iptables"
49 
IP_REHABILITEES="/etc/dansguardian/lists/exceptioniplist"		# Rehabilitated IP
 45 
IP_REHABILITEES="/etc/dansguardian/lists/exceptioniplist"		# Rehabilitated IP
50 
 
 46 
 
51 
# Sauvegarde des SET des utilisateurs connectés si ils existent
 47 
# Sauvegarde des SET des utilisateurs connectés si ils existent
52 
# Saving SET of connected users if it exists
 48 
# Saving SET of connected users if it exists
53 
ipset list not_filtered 1>/dev/null 2>&1
 49 
ipset list not_filtered 1>/dev/null 2>&1
54 
if [ $? -eq 0 ];
 50 
if [ $? -eq 0 ];
55 
then
 51 
then
56 
	ipset save not_filtered > $TMP_users_set_save
 52 
	ipset save not_filtered > $TMP_users_set_save
57 
	ipset save havp >> $TMP_users_set_save
 53 
	ipset save havp >> $TMP_users_set_save
58 
	ipset save havp_bl >> $TMP_users_set_save
 54 
	ipset save havp_bl >> $TMP_users_set_save
59 
	ipset save havp_wl >> $TMP_users_set_save
 55 
	ipset save havp_wl >> $TMP_users_set_save
60 
	ipset save proto_0 >> $TMP_users_set_save
 56 
	ipset save proto_0 >> $TMP_users_set_save
61 
	ipset save proto_1 >> $TMP_users_set_save
 57 
	ipset save proto_1 >> $TMP_users_set_save
62 
	ipset save proto_2 >> $TMP_users_set_save
 58 
	ipset save proto_2 >> $TMP_users_set_save
63 
	ipset save proto_3 >> $TMP_users_set_save
 59 
	ipset save proto_3 >> $TMP_users_set_save
64 
fi
 60 
fi
65 
 
 61 
 
66 
# loading of NetFlow probe (ipt_NETFLOW kernel module)
 62 
# loading of NetFlow probe (ipt_NETFLOW kernel module)
67 
modprobe ipt_NETFLOW destination=127.0.0.1:2055
 63 
modprobe ipt_NETFLOW destination=127.0.0.1:2055
68 
 
 64 
 
69 
# Effacement des règles existantes
 65 
# Effacement des règles existantes
70 
# Flush all existing rules
 66 
# Flush all existing rules
71 
$IPTABLES -F
 67 
$IPTABLES -F
72 
$IPTABLES -t nat -F
 68 
$IPTABLES -t nat -F
73 
$IPTABLES -t mangle -F
 69 
$IPTABLES -t mangle -F
74 
$IPTABLES -F INPUT
 70 
$IPTABLES -F INPUT
75 
$IPTABLES -F FORWARD
 71 
$IPTABLES -F FORWARD
76 
$IPTABLES -F OUTPUT
 72 
$IPTABLES -F OUTPUT
77 
 
 73 
 
78 
# Suppression des chaines utilisateurs sur les tables filter et nat
 74 
# Suppression des chaines utilisateurs sur les tables filter et nat
79 
# Flush non default rules on filter and nat tables
 75 
# Flush non default rules on filter and nat tables
80 
$IPTABLES -X
 76 
$IPTABLES -X
81 
$IPTABLES -t nat -X
 77 
$IPTABLES -t nat -X
82 
 
 78 
 
83 
# Stratégies par défaut
 79 
# Stratégies par défaut
84 
# Default policies
 80 
# Default policies
85 
$IPTABLES -P INPUT DROP
 81 
$IPTABLES -P INPUT DROP
86 
$IPTABLES -P FORWARD DROP
 82 
$IPTABLES -P FORWARD DROP
87 
$IPTABLES -P OUTPUT DROP
 83 
$IPTABLES -P OUTPUT DROP
88 
$IPTABLES -t nat -P PREROUTING ACCEPT
 84 
$IPTABLES -t nat -P PREROUTING ACCEPT
89 
$IPTABLES -t nat -P POSTROUTING ACCEPT
 85 
$IPTABLES -t nat -P POSTROUTING ACCEPT
90 
$IPTABLES -t nat -P OUTPUT ACCEPT
 86 
$IPTABLES -t nat -P OUTPUT ACCEPT
91 
 
 87 
 
92 
 
 88 
 
93 
#############################
 89 
#############################
94 
#          IPSET            #
 90 
#          IPSET            #
95 
#############################
 91 
#############################
96 
 
 92 
 
97 
# destruction de tous les SET
 93 
# destruction de tous les SET
98 
# destroy all SET
 94 
# destroy all SET
99 
ipset flush
 95 
ipset flush
100 
ipset destroy
 96 
ipset destroy
101 
 
 97 
 
102 
###### BL set  ###########
 98 
###### BL set  ###########
103 
# Calcul de la taille / Compute the length
 99 
# Calcul de la taille / Compute the length
104 
bl_set_length=$(wc -l $BL_IP_CAT/* | awk '{print $1}' | tail -n 1)
 100 
bl_set_length=$(wc -l $BL_IP_CAT/* | awk '{print $1}' | tail -n 1)
105 
# Chargement / loading
 101 
# Chargement / loading
106 
echo "create bl_ip_blocked hash:net family inet hashsize 1024 maxelem $bl_set_length" > $TMP_set_save
 102 
echo "create bl_ip_blocked hash:net family inet hashsize 1024 maxelem $bl_set_length" > $TMP_set_save
107 
for category in `ls -1 $BL_IP_CAT | cut -d '@' -f1`
 103 
for category in `ls -1 $BL_IP_CAT | cut -d '@' -f1`
108 
do
 104 
do
109 
	cat $BL_IP_CAT/$category >> $TMP_set_save
 105 
	cat $BL_IP_CAT/$category >> $TMP_set_save
110 
done
 106 
done
111 
ipset -! restore < $TMP_set_save
 107 
ipset -! restore < $TMP_set_save
112 
rm -f $TMP_set_save
 108 
rm -f $TMP_set_save
113 
# Suppression des ip réhabilitées / Removing of rehabilitated ip
 109 
# Suppression des ip réhabilitées / Removing of rehabilitated ip
114 
for ip in $(cat $IP_REHABILITEES)
 110 
for ip in $(cat $IP_REHABILITEES)
115 
do
 111 
do
116 
	ipset del bl_ip_blocked $ip
 112 
	ipset del bl_ip_blocked $ip
117 
done
 113 
done
118 
 
 114 
 
119 
###### WL set  ###########
 115 
###### WL set  ###########
120 
# taille fixe, car peupler par dnsmasq / fixe length due to dnsmasq dynamic loading
 116 
# taille fixe, car peupler par dnsmasq / fixe length due to dnsmasq dynamic loading
121 
wl_set_length=65536
 117 
wl_set_length=65536
122 
# Chargement Loading
 118 
# Chargement Loading
123 
echo "create wl_ip_allowed hash:net family inet hashsize 1024 maxelem $wl_set_length" > $TMP_set_save
 119 
echo "create wl_ip_allowed hash:net family inet hashsize 1024 maxelem $wl_set_length" > $TMP_set_save
124 
#get ip-wl files from ACC
 120 
#get ip-wl files from ACC
125 
for category in `ls -1 $WL_IP_CAT |cut -d '@' -f1`
 121 
for category in `ls -1 $WL_IP_CAT |cut -d '@' -f1`
126 
do
 122 
do
127 
	cat $WL_IP_CAT/$category >> $TMP_set_save
 123 
	cat $WL_IP_CAT/$category >> $TMP_set_save
128 
done
 124 
done
129 
ipset -! restore < $TMP_set_save
 125 
ipset -! restore < $TMP_set_save
130 
rm -f $TMP_set_save
 126 
rm -f $TMP_set_save
131 
 
 127 
 
132 
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET
 128 
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET
133 
# Restoring the connected users SETs if available, otherwise creating SETs
 129 
# Restoring the connected users SETs if available, otherwise creating SETs
134 
if [ -e $TMP_users_set_save ];
 130 
if [ -e $TMP_users_set_save ];
135 
then
 131 
then
136 
	ipset -! restore < $TMP_users_set_save
 132 
	ipset -! restore < $TMP_users_set_save
137 
	rm -f $TMP_users_set_save
 133 
	rm -f $TMP_users_set_save
138 
else
 134 
else
139 
	ipset create not_filtered hash:ip hashsize 1024
 135 
	ipset create not_filtered hash:ip hashsize 1024
140 
	ipset create havp hash:ip hashsize 1024
 136 
	ipset create havp hash:ip hashsize 1024
141 
	ipset create havp_bl hash:ip hashsize 1024
 137 
	ipset create havp_bl hash:ip hashsize 1024
142 
	ipset create havp_wl hash:ip hashsize 1024
 138 
	ipset create havp_wl hash:ip hashsize 1024
143 
	#pour les filtrages de protocole par utilisateur
 139 
	#pour les filtrages de protocole par utilisateur
144 
	ipset create proto_0 hash:ip hashsize 1024
 140 
	ipset create proto_0 hash:ip hashsize 1024
145 
	ipset create proto_1 hash:ip hashsize 1024
 141 
	ipset create proto_1 hash:ip hashsize 1024
146 
	ipset create proto_2 hash:ip hashsize 1024
 142 
	ipset create proto_2 hash:ip hashsize 1024
147 
	ipset create proto_3 hash:ip hashsize 1024
 143 
	ipset create proto_3 hash:ip hashsize 1024
148 
fi
 144 
fi
149 
 
 145 
 
150 
#############################
 146 
#############################
151 
#       PREROUTING          #
 147 
#       PREROUTING          #
152 
#############################
 148 
#############################
153 
 
 149 
 
154 
# Marquage des paquets qui tentent d'accéder directement à un serveur sans authentification en mode proxy pour pouvoir les rejeter en INPUT
 150 
# Marquage des paquets qui tentent d'accéder directement à un serveur sans authentification en mode proxy pour pouvoir les rejeter en INPUT
155 
# Mark packets that attempt to directly access a server without authentication with proxy client to reject them in INPUT rules
 151 
# Mark packets that attempt to directly access a server without authentication with proxy client to reject them in INPUT rules
156 
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp -m tcp --dport 80 -m string --string 'GET http' --algo bm --from 50 --to 70 -j MARK --set-mark 10
 152 
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp -m tcp --dport 80 -m string --string 'GET http' --algo bm --from 50 --to 70 -j MARK --set-mark 10
157 
 
 153 
 
158 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au 8080 (DansGuardian) pour pouvoir les rejeter en INPUT
 154 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au 8080 (DansGuardian) pour pouvoir les rejeter en INPUT
159 
# Mark (and log) the direct attempts to TCP port 8090 (dansguardian) in order to REJECT them in INPUT rules
 155 
# Mark (and log) the direct attempts to TCP port 8090 (dansguardian) in order to REJECT them in INPUT rules
160 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
 156 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
161 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
 157 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
162 
 
 158 
 
163 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port 8090 (tinyproxy) pour pouvoir les rejeter en INPUT
 159 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port 8090 (tinyproxy) pour pouvoir les rejeter en INPUT
164 
# Mark (and log) the direct attempts to TCP port 8090 (tinyproxy) in order to REJECT them in INPUT rules
 160 
# Mark (and log) the direct attempts to TCP port 8090 (tinyproxy) in order to REJECT them in INPUT rules
165 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8090 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
 161 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8090 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
166 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8090 -j MARK --set-mark 2
 162 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8090 -j MARK --set-mark 2
167 
 
 163 
 
168 
# Marquage des paquets qui tentent d'accéder directement au port 54 (DNS-blacklist) pour pouvoir les rejeter en INPUT
 164 
# Marquage des paquets qui tentent d'accéder directement au port 54 (DNS-blacklist) pour pouvoir les rejeter en INPUT
169 
# Mark the direct attempts to port 54 (DNS-blacklist) in order to REJECT them in INPUT rules
 165 
# Mark the direct attempts to port 54 (DNS-blacklist) in order to REJECT them in INPUT rules
170 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 3
 166 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 3
171 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 54 -j MARK --set-mark 3
 167 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 54 -j MARK --set-mark 3
172 
 
 168 
 
173 
# Marquage des paquets qui tentent d'accéder directement au port 55 (DNS-Whitelist) pour pouvoir les rejeter en INPUT
 169 
# Marquage des paquets qui tentent d'accéder directement au port 55 (DNS-Whitelist) pour pouvoir les rejeter en INPUT
174 
# Mark the direct attempts to port 55 (DNS-whitelist) in order to REJECT them in INPUT rules
 170 
# Mark the direct attempts to port 55 (DNS-whitelist) in order to REJECT them in INPUT rules
175 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 55 -j MARK --set-mark 4
 171 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 55 -j MARK --set-mark 4
176 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 55 -j MARK --set-mark 4
 172 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 55 -j MARK --set-mark 4
177 
 
 173 
 
178 
# Marquage des paquets qui tentent d'accéder directement au port 56 (DNS-Blackhole) pour pouvoir les rejeter en INPUT
 174 
# Marquage des paquets qui tentent d'accéder directement au port 56 (DNS-Blackhole) pour pouvoir les rejeter en INPUT
179 
# Mark the direct attempts to port 56 (DNS-blackhole) in order to REJECT them in INPUT rules
 175 
# Mark the direct attempts to port 56 (DNS-blackhole) in order to REJECT them in INPUT rules
180 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 56 -j MARK --set-mark 5
 176 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 56 -j MARK --set-mark 5
181 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 56 -j MARK --set-mark 5
 177 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 56 -j MARK --set-mark 5
182 
 
 178 
 
183 
# redirection DNS des usagers 'havp_bl' vers le port 54
 179 
# redirection DNS des usagers 'havp_bl' vers le port 54
184 
# redirect DNS of 'havp_bl' users to port 54
 180 
# redirect DNS of 'havp_bl' users to port 54
185 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 54
 181 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 54
186 
 
 182 
 
187 
# redirection DNS des usagers 'havp_wl' vers le port 55
 183 
# redirection DNS des usagers 'havp_wl' vers le port 55
188 
# redirect DNS of 'havp_wl' users to port 55
 184 
# redirect DNS of 'havp_wl' users to port 55
189 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 55
 185 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 55
190 
 
 186 
 
191 
# Journalisation HTTP_Internet des usagers 'havp_bl' (paquets SYN uniquement). Les autres protocoles sont journalisés en FORWARD par netflow.
 187 
# Journalisation HTTP_Internet des usagers 'havp_bl' (paquets SYN uniquement). Les autres protocoles sont journalisés en FORWARD par netflow.
192 
# Log Internet HTTP of 'havp_bl' users" (only syn packets). Other protocols are logged in FORWARD by netflow
 188 
# Log Internet HTTP of 'havp_bl' users" (only syn packets). Other protocols are logged in FORWARD by netflow
193 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src ! -d $PRIVATE_IP -p tcp --dport http -m state --state NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
 189 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src ! -d $PRIVATE_IP -p tcp --dport http -m state --state NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
194 
 
 190 
 
195 
# Redirection HTTP des usagers 'havp_bl' cherchant à joindre les IP de la blacklist vers ALCASAR (page 'accès interdit')
 191 
# Redirection HTTP des usagers 'havp_bl' cherchant à joindre les IP de la blacklist vers ALCASAR (page 'accès interdit')
196 
# Redirect HTTP of 'havp_bl' users who want blacklist IP to ALCASAR ('access denied' page)
 192 
# Redirect HTTP of 'havp_bl' users who want blacklist IP to ALCASAR ('access denied' page)
197 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p tcp --dport http -j REDIRECT --to-port 80
 193 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p tcp --dport http -j REDIRECT --to-port 80
198 
 
 194 
 
199 
# Redirection HTTP des usagers 'havp_wl' cherchant à joindre les IP qui ne sont pas dans la WL vers ALCASAR (page 'accès interdit')
 195 
# Redirection HTTP des usagers 'havp_wl' cherchant à joindre les IP qui ne sont pas dans la WL vers ALCASAR (page 'accès interdit')
200 
# Redirect HTTP of 'havp_wl' users who want IP not in the WL to ALCASAR ('access denied' page)
 196 
# Redirect HTTP of 'havp_wl' users who want IP not in the WL to ALCASAR ('access denied' page)
201 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src -m set ! --match-set wl_ip_allowed dst -p tcp --dport http -j REDIRECT --to-port 80
 197 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src -m set ! --match-set wl_ip_allowed dst -p tcp --dport http -j REDIRECT --to-port 80
202 
 
 198 
 
203 
# Redirection des requêtes HTTP sortantes des usagers 'havp_bl' vers DansGuardian
 199 
# Redirection des requêtes HTTP sortantes des usagers 'havp_bl' vers DansGuardian
204 
# Redirect outbound HTTP requests of "BL" users to DansGuardian (transparent proxy)
 200 
# Redirect outbound HTTP requests of "BL" users to DansGuardian (transparent proxy)
205 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8080
 201 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8080
206 
 
 202 
 
207 
# Redirection des requêtes HTTP sortantes des usager 'havp_wl' et 'havp' vers Tinyproxy
 203 
# Redirection des requêtes HTTP sortantes des usager 'havp_wl' et 'havp' vers Tinyproxy
208 
# Redirect outbound HTTP requests for "WL-antivirus" users to Tinyproxy
 204 
# Redirect outbound HTTP requests for "WL-antivirus" users to Tinyproxy
209 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
 205 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
210 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
 206 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
211 
 
 207 
 
212 
# Redirection des requêtes NTP vers le serveur NTP local
 208 
# Redirection des requêtes NTP vers le serveur NTP local
213 
# Redirect NTP request in local NTP server
 209 
# Redirect NTP request in local NTP server
214 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
 210 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
215 
 
 211 
 
216 
#############################
 212 
#############################
217 
#         INPUT             #
 213 
#         INPUT             #
218 
#############################
 214 
#############################
219 
 
 215 
 
220 
# Tout passe sur loopback
 216 
# Tout passe sur loopback
221 
# accept all on loopback
 217 
# accept all on loopback
222 
$IPTABLES -A INPUT -i lo -j ACCEPT
 218 
$IPTABLES -A INPUT -i lo -j ACCEPT
223 
$IPTABLES -A OUTPUT -o lo -j ACCEPT
 219 
$IPTABLES -A OUTPUT -o lo -j ACCEPT
224 
 
 220 
 
225 
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
 221 
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
226 
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
 222 
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
227 
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
 223 
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
228 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
 224 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
229 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
 225 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
230 
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
 226 
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
231 
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
 227 
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
232 
 
 228 
 
233 
# Si configéré, on autorise les réponses DHCP
 229 
# Si configéré, on autorise les réponses DHCP
234 
# Allow DHCP answers if configured
 230 
# Allow DHCP answers if configured
235 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
 231 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
236 
if [[ "$public_ip_mask" == "dhcp" ]]
 232 
if [[ "$public_ip_mask" == "dhcp" ]]
237 
then
 233 
then
238 
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 68 -j ACCEPT
 234 
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 68 -j ACCEPT
239 
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 68 -j ACCEPT
 235 
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 68 -j ACCEPT
240 
fi
 236 
fi
241 
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
 237 
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
242 
# Drop broadcast & multicast on EXTIF to avoid log
 238 
# Drop broadcast & multicast on EXTIF to avoid log
243 
$IPTABLES -A INPUT -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
 239 
$IPTABLES -A INPUT -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
244 
 
 240 
 
245 
# On autorise les retours de connexions légitimes par INPUT
 241 
# On autorise les retours de connexions légitimes par INPUT
246 
# Conntrack on INPUT
 242 
# Conntrack on INPUT
247 
$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
 243 
$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
248 
 
 244 
 
249 
# On interdit les connexions directes au port utilisé par DansGuardian (8080). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
 245 
# On interdit les connexions directes au port utilisé par DansGuardian (8080). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
250 
# Deny direct connections on DansGuardian port (8080). The concerned paquets have been marked and logged in mangle table (PREROUTING)
 246 
# Deny direct connections on DansGuardian port (8080). The concerned paquets have been marked and logged in mangle table (PREROUTING)
251 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset
 247 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset
252 
 
 248 
 
253 
# Autorisation des connexions légitimes à DansGuardian
 249 
# Autorisation des connexions légitimes à DansGuardian
254 
# Allow connections for DansGuardian
 250 
# Allow connections for DansGuardian
255 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m state --state NEW --syn -j ACCEPT
 251 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m state --state NEW --syn -j ACCEPT
256 
 
 252 
 
257 
# On interdit les connexions directes au port utilisé par tinyproxy (8090). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
 253 
# On interdit les connexions directes au port utilisé par tinyproxy (8090). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
258 
# Deny direct connections on tinyproxy port (8090). The concerned paquets have been marked in mangle table (PREROUTING)
 254 
# Deny direct connections on tinyproxy port (8090). The concerned paquets have been marked in mangle table (PREROUTING)
259 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8090 -m mark --mark 2 -j REJECT --reject-with tcp-reset
 255 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8090 -m mark --mark 2 -j REJECT --reject-with tcp-reset
260 
 
 256 
 
261 
# Autorisation des connexions légitimes vers tinyproxy
 257 
# Autorisation des connexions légitimes vers tinyproxy
262 
# Allow connections to tinyproxy
 258 
# Allow connections to tinyproxy
263 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8090 -m state --state NEW --syn -j ACCEPT
 259 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8090 -m state --state NEW --syn -j ACCEPT
264 
 
 260 
 
265 
# On interdit les connexions directes au port 54 (DNS-blacklist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 261 
# On interdit les connexions directes au port 54 (DNS-blacklist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
266 
# Deny direct connections on port 54 (DNS-blacklist). The concerned paquets are marked in mangle table (PREROUTING)
 262 
# Deny direct connections on port 54 (DNS-blacklist). The concerned paquets are marked in mangle table (PREROUTING)
267 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable
 263 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable
268 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 3 -j REJECT --reject-with tcp-reset
 264 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 3 -j REJECT --reject-with tcp-reset
269 
 
 265 
 
270 
# On interdit les connexions directes au port 55 (DNS-whitelist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 266 
# On interdit les connexions directes au port 55 (DNS-whitelist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
271 
# Deny direct connections on port 55 (DNS-whitelist). The concerned paquets are marked in mangle table (PREROUTING)
 267 
# Deny direct connections on port 55 (DNS-whitelist). The concerned paquets are marked in mangle table (PREROUTING)
272 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 55 -m mark --mark 4 -j REJECT --reject-with icmp-port-unreachable
 268 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 55 -m mark --mark 4 -j REJECT --reject-with icmp-port-unreachable
273 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 3 -j REJECT --reject-with tcp-reset
 269 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 3 -j REJECT --reject-with tcp-reset
274 
 
 270 
 
275 
# On interdit les connexions directes au port 56 (DNS-Blackhole). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 271 
# On interdit les connexions directes au port 56 (DNS-Blackhole). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
276 
# Deny direct connections on port 56 (DNS-blackhole). The concerned paquets are marked in mangle table (PREROUTING)
 272 
# Deny direct connections on port 56 (DNS-blackhole). The concerned paquets are marked in mangle table (PREROUTING)
277 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 56 -m mark --mark 5 -j REJECT --reject-with icmp-port-unreachable
 273 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 56 -m mark --mark 5 -j REJECT --reject-with icmp-port-unreachable
278 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 56 -m mark --mark 3 -j REJECT --reject-with tcp-reset
 274 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 56 -m mark --mark 3 -j REJECT --reject-with tcp-reset
279 
 
 275 
 
280 
# autorisation des connexion légitime à DNSMASQ (avec blacklist)
 276 
# autorisation des connexion légitime à DNSMASQ (avec blacklist)
281 
# Allow connections for DNSMASQ (with blacklist)
 277 
# Allow connections for DNSMASQ (with blacklist)
282 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
 278 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
283 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 54 -j ACCEPT
 279 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 54 -j ACCEPT
284 
 
 280 
 
285 
# autorisation des connexion légitime à DNSMASQ (avec whitelist)
 281 
# autorisation des connexion légitime à DNSMASQ (avec whitelist)
286 
# Allow connections for DNSMASQ (with whitelist)
 282 
# Allow connections for DNSMASQ (with whitelist)
287 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 55 -j ACCEPT
 283 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 55 -j ACCEPT
288 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 55 -j ACCEPT
 284 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 55 -j ACCEPT
289 
 
 285 
 
290 
# autorisation des connexion légitime à DNSMASQ (mode blackhole)
 286 
# autorisation des connexion légitime à DNSMASQ (mode blackhole)
291 
# Allow connections for DNSMASQ (blackhole mode)
 287 
# Allow connections for DNSMASQ (blackhole mode)
292 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 56 -j ACCEPT
 288 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 56 -j ACCEPT
293 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 56 -j ACCEPT
 289 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 56 -j ACCEPT
294 
 
 290 
 
295 
# Accès direct aux services internes
 291 
# Accès direct aux services internes
296 
# Internal services access
 292 
# Internal services access
297 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS
 293 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS
298 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport domain -j ACCEPT	# DNS
 294 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport domain -j ACCEPT	# DNS
299 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
 295 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
300 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
 296 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
301 
$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
 297 
$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
302 
$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
 298 
$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
303 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 3990:3991 -j ACCEPT	# Requêtes de deconnexion usagers # Users logout requests
 299 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 3990:3991 -j ACCEPT	# Requêtes de deconnexion usagers # Users logout requests
304 
$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
 300 
$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
305 
 
 301 
 
306 
# SSHD rules if activate
 302 
# SSHD rules if activate
307 
if [ $SSH = on ]
 303 
if [ $SSH = on ]
308 
	then
 304 
	then
309 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -m state --state NEW -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-LAN -- ACCEPT"
 305 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -m state --state NEW -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-LAN -- ACCEPT"
310 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -j ACCEPT
 306 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -j ACCEPT
311 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW --syn -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-WAN -- ACCEPT"
 307 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW --syn -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-WAN -- ACCEPT"
312 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW -j ACCEPT
 308 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW -j ACCEPT
313 
fi
 309 
fi
314 
 
 310 
 
315 
# Insertion de règles locales
 311 
# Insertion de règles locales
316 
# Here, we add local rules (i.e. VPN from Internet)
 312 
# Here, we add local rules (i.e. VPN from Internet)
317 
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
 313 
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
318 
	. /usr/local/etc/alcasar-iptables-local.sh
 314 
	. /usr/local/etc/alcasar-iptables-local.sh
319 
fi
 315 
fi
320 
 
 316 
 
321 
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
 317 
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
322 
# Deny and log on INPUT from the LAN
 318 
# Deny and log on INPUT from the LAN
323 
$IPTABLES -A INPUT -i $TUNIF -m state --state NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE rej-int -- REJECT "
 319 
$IPTABLES -A INPUT -i $TUNIF -m state --state NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE rej-int -- REJECT "
324 
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
 320 
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
325 
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
 321 
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
326 
 
 322 
 
327 
# Interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
 323 
# Interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
328 
# Reject INTIF access (only when chilli is down)
 324 
# Reject INTIF access (only when chilli is down)
329 
$IPTABLES -A INPUT -i $INTIF -j NFLOG --nflog-group 1 --nflog-prefix "RULE Protect1 -- REJECT "
 325 
$IPTABLES -A INPUT -i $INTIF -j NFLOG --nflog-group 1 --nflog-prefix "RULE Protect1 -- REJECT "
330 
$IPTABLES -A INPUT -i $INTIF -j REJECT
 326 
$IPTABLES -A INPUT -i $INTIF -j REJECT
331 
 
 327 
 
332 
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
 328 
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
333 
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
 329 
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
334 
$IPTABLES -A INPUT -i $EXTIF -m state --state NEW -j NFLOG --nflog-group 3 --nflog-threshold 10 --nflog-prefix "RULE rej-ext -- DROP"
 330 
$IPTABLES -A INPUT -i $EXTIF -m state --state NEW -j NFLOG --nflog-group 3 --nflog-threshold 10 --nflog-prefix "RULE rej-ext -- DROP"
335 
 
 331 
 
336 
#############################
 332 
#############################
337 
#        FORWARD            #
 333 
#        FORWARD            #
338 
#############################
 334 
#############################
339 
 
 335 
 
340 
# Blocage des IPs du SET bl_ip_blocked pour le SET havp_bl
 336 
# Blocage des IPs du SET bl_ip_blocked pour le SET havp_bl
341 
# Deny IPs of the SET bl_ip_blocked for the set havp_bl
 337 
# Deny IPs of the SET bl_ip_blocked for the set havp_bl
342 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p icmp -j REJECT --reject-with icmp-host-prohibited
 338 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p icmp -j REJECT --reject-with icmp-host-prohibited
343 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p udp -j REJECT --reject-with icmp-host-prohibited
 339 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p udp -j REJECT --reject-with icmp-host-prohibited
344 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p tcp -j REJECT --reject-with tcp-reset
 340 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p tcp -j REJECT --reject-with tcp-reset
345 
 
 341 
 
346 
# Rejet des requêtes DNS vers Internet
 342 
# Rejet des requêtes DNS vers Internet
347 
# Deny forward DNS
 343 
# Deny forward DNS
348 
$IPTABLES -A FORWARD -i $TUNIF -p udp --dport domain -j REJECT --reject-with icmp-port-unreachable
 344 
$IPTABLES -A FORWARD -i $TUNIF -p udp --dport domain -j REJECT --reject-with icmp-port-unreachable
349 
$IPTABLES -A FORWARD -i $TUNIF -p tcp --dport domain -j REJECT --reject-with tcp-reset
 345 
$IPTABLES -A FORWARD -i $TUNIF -p tcp --dport domain -j REJECT --reject-with tcp-reset
350 
 
 346 
 
351 
# Active le suivi de session
 347 
# Active le suivi de session
352 
# Allow Conntrack
 348 
# Allow Conntrack
353 
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
 349 
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
354 
 
 350 
 
355 
# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...)
 351 
# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...)
356 
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
 352 
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
357 
if [ $nb_uamallowed != "0" ]
 353 
if [ $nb_uamallowed != "0" ]
358 
then
 354 
then
359 
	while read ip_allowed_line
 355 
	while read ip_allowed_line
360 
	do
 356 
	do
361 
		ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
 357 
		ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
362 
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NETFLOW
 358 
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NETFLOW
363 
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
 359 
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
364 
	done < /usr/local/etc/alcasar-uamallowed
 360 
	done < /usr/local/etc/alcasar-uamallowed
365 
fi
 361 
fi
366 
 
 362 
 
367 
# filtrage protocole par utilisateur (profile 1 : http, https)
 363 
# filtrage protocole par utilisateur (profile 1 : http, https)
368 
# protocols filtering for users (profil 1 : http, https)
 364 
# protocols filtering for users (profil 1 : http, https)
369 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https -m state --state NEW -j REJECT --reject-with tcp-reset
 365 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https -m state --state NEW -j REJECT --reject-with tcp-reset
370 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
 366 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
371 
 
 367 
 
372 
# filtrage protocole par utilisateur (profile 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
 368 
# filtrage protocole par utilisateur (profile 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
373 
# protocols filtering for users (profil 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
 369 
# protocols filtering for users (profil 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
374 
 
 370 
 
375 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https,pop3,pop3s,imap,imaps,ftp,ftp-data,sftp,ssh -m state --state NEW -j REJECT --reject-with tcp-reset
 371 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https,pop3,pop3s,imap,imaps,ftp,ftp-data,sftp,ssh -m state --state NEW -j REJECT --reject-with tcp-reset
376 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https,pop3,pop3s,imap,imaps,ssh -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
 372 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https,pop3,pop3s,imap,imaps,ssh -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
377 
 
 373 
 
378 
# filtrage protocole par utilisateur (profile 3 : personnalisable via l'ACC)
 374 
# filtrage protocole par utilisateur (profile 3 : personnalisable via l'ACC)
379 
# protocols filtering for users (profil 3 : customized with ACC)
 375 
# protocols filtering for users (profil 3 : customized with ACC)
380 
#profile 3 personalisables via l'ACC
 376 
#profile 3 personalisables via l'ACC
381 
custom_tcp_protocols_list='';custom_udp_protocols_list=''
 377 
custom_tcp_protocols_list='';custom_udp_protocols_list=''
382 
while read svc_line
 378 
while read svc_line
383 
do
 379 
do
384 
	svc_on=`echo $svc_line|cut -b1`
 380 
	svc_on=`echo $svc_line|cut -b1`
385 
	if [ $svc_on != "#" ]
 381 
	if [ $svc_on != "#" ]
386 
	then
382 
	then
387 
		svc_name=`echo $svc_line|cut -d" " -f1`
 383 
		svc_name=`echo $svc_line|cut -d" " -f1`
388 
		svc_port=`echo $svc_line|cut -d" " -f2`
 384 
		svc_port=`echo $svc_line|cut -d" " -f2`
389 
		if [ $svc_name = "icmp" ]
 385 
		if [ $svc_name = "icmp" ]
390 
		then
 386 
		then
391 
			svc_icmp="on"
 387 
			svc_icmp="on"
392 
		else
 388 
		else
393 
			if [ "$custom_tcp_protocols_list" == "" ]
 389 
			if [ "$custom_tcp_protocols_list" == "" ]
394 
			then
 390 
			then
395 
				custom_tcp_protocols_list=$svc_port
 391 
				custom_tcp_protocols_list=$svc_port
396 
			else
 392 
			else
397 
				custom_tcp_protocols_list=`echo $custom_tcp_protocols_list","$svc_port`
 393 
				custom_tcp_protocols_list=`echo $custom_tcp_protocols_list","$svc_port`
398 
			fi
 394 
			fi
399 
			udp_svc=`egrep "[[:space:]]$svc_port/udp" /etc/services|wc -l`
 395 
			udp_svc=`egrep "[[:space:]]$svc_port/udp" /etc/services|wc -l`
400 
			if [ $udp_svc = "1" ] # udp service exist
 396 
			if [ $udp_svc = "1" ] # udp service exist
401 
			then
 397 
			then
402 
				if [ "$custom_udp_protocols_list" == "" ]
 398 
				if [ "$custom_udp_protocols_list" == "" ]
403 
				then
 399 
				then
404 
					custom_udp_protocols_list=$svc_port
 400 
					custom_udp_protocols_list=$svc_port
405 
				else
 401 
				else
406 
					custom_udp_protocols_list=`echo $custom_udp_protocols_list","$svc_port`
 402 
					custom_udp_protocols_list=`echo $custom_udp_protocols_list","$svc_port`
407 
				fi
 403 
				fi
408 
			fi
 404 
			fi
409 
		fi
 405 
		fi
410 
	fi
 406 
	fi
411 
done < /usr/local/etc/alcasar-services
 407 
done < /usr/local/etc/alcasar-services
412 
	if [ "$custom_tcp_protocols_list" == "" ]
 408 
	if [ "$custom_tcp_protocols_list" == "" ]
413 
	then
 409 
	then
414 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -j REJECT
 410 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -j REJECT
415 
	else
 411 
	else
416 
		if [ "$svc_icmp" != "on" ]
 412 
		if [ "$svc_icmp" != "on" ]
417 
		then
 413 
		then
418 
			$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p icmp -j REJECT --reject-with icmp-proto-unreachable
 414 
			$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p icmp -j REJECT --reject-with icmp-proto-unreachable
419 
		fi
 415 
		fi
420 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports $custom_tcp_protocols_list -m state --state NEW -j REJECT --reject-with tcp-reset
 416 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports $custom_tcp_protocols_list -m state --state NEW -j REJECT --reject-with tcp-reset
421 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports $custom_udp_protocols_list -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
 417 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports $custom_udp_protocols_list -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
422 
	fi
 418 
	fi
423 
 
 419 
 
424 
# journalisation et autorisation des connections sortant du LAN
 420 
# journalisation et autorisation des connections sortant du LAN
425 
# Allow forward connections with log
 421 
# Allow forward connections with log
426 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j NETFLOW
 422 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j NETFLOW
427 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ACCEPT
 423 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ACCEPT
428 
 
 424 
 
429 
#############################
 425 
#############################
430 
#         OUTPUT            #
 426 
#         OUTPUT            #
431 
#############################
 427 
#############################
432 
# On laisse tout sortir sur toutes les cartes sauf celle qui est connectée sur l'extérieur
 428 
# On laisse tout sortir à l'exception de la carte externe (cf ci-dessous)
433 
# Everything is allowed but traffic through outside network interface
 429 
# Everything is allowed apart from outside network interface (see bellow)
434 
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
 430 
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
435 
 
 431 
 
436 
# Si configéré, on autorise les requêtes DHCP
 432 
# Si configuré, on autorise les requêtes DHCP
437 
# Allow DHCP requests if configured
 433 
# Allow DHCP requests if configured
438 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
 434 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
439 
if [[ "$public_ip_mask" == "dhcp" ]]
 435 
if [[ "$public_ip_mask" == "dhcp" ]]
440 
then
 436 
then
441 
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 67 -j ACCEPT
 437 
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 67 -j ACCEPT
442 
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 67 -j ACCEPT
 438 
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 67 -j ACCEPT
443 
fi
 439 
fi
444 
 
 440 
 
445 
# On autorise les requêtes DNS vers les serveurs DNS identifiés
 441 
# On autorise les requêtes DNS vers les serveurs DNS identifiés
446 
# Allow DNS requests to identified DNS servers
 442 
# Allow DNS requests to identified DNS servers
447 
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m state --state NEW -j ACCEPT
 443 
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m state --state NEW -j ACCEPT
448 
 
 444 
 
449 
# On autorise les requêtes HTTP sortantes
 445 
# On autorise les requêtes HTTP avec log Netflow (en provenance de Dansguardian)
450 
# HTTP requests are allowed
 446 
# HTTPS requests are allowed with netflow log (from Dansguardian)
451 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
 447 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
452 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
 448 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
453 
 
 449 
 
454 
# On autorise les requêtes HTTPS sortantes
 450 
# On autorise les requêtes HTTPS sortantes
455 
# HTTPS requests are allowed
 451 
# HTTPS requests are allowed
456 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport https -j ACCEPT
 452 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport https -j ACCEPT
457 
 
 453 
 
458 
# On autorise les requêtes RSYNC sortantes (maj BL de Toulouse)
 454 
# On autorise les requêtes RSYNC sortantes (maj BL de Toulouse)
459 
# RSYNC requests are allowed (to update BL of Toulouse)
 455 
# RSYNC requests are allowed (update of Toulouse BL)
460 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport rsync -j ACCEPT
 456 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport rsync -j ACCEPT
461 
 
 457 
 
462 
# On autorise les requêtes FTP
 458 
# On autorise les requêtes FTP
463 
# FTP requests are allowed
 459 
# FTP requests are allowed
464 
modprobe nf_conntrack_ftp
 460 
modprobe nf_conntrack_ftp
465 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
 461 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
466 
$IPTABLES -A OUTPUT -o $EXTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
 462 
$IPTABLES -A OUTPUT -o $EXTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
467 
 
 463 
 
468 
# On autorise les requêtes NTP
 464 
# On autorise les requêtes NTP
469 
# NTP requests are allowed
 465 
# NTP requests are allowed
470 
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
 466 
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
471 
 
 467 
 
472 
# On autorise les requêtes ICMP (ping)
 468 
# On autorise les requêtes ICMP (ping)
473 
# ICMP (ping) requests are allowed
 469 
# ICMP (ping) requests are allowed
474 
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
 470 
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
475 
 
 471 
 
476 
# On autorise les requêtes LDAP si un serveur externe est configué
 472 
# On autorise les requêtes LDAP
477 
# LDAP requests are allowed if an external server is declared
 473 
# LDAP requests are allowed
478 
if [ $LDAP = on ]
 - 
 
479 
	then
 - 
 
480 
	$IPTABLES -A OUTPUT -p tcp -d $LDAP_SERVER -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
 474 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
481 
	$IPTABLES -A OUTPUT -p udp -d $LDAP_SERVER -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
 475 
$IPTABLES -A OUTPUT -o $EXTIF -p udp -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
482 
fi
 - 
 
483 
 
 476 
 
484 
#############################
 477 
#############################
485 
#       POSTROUTING         #
 478 
#       POSTROUTING         #
486 
#############################
 479 
#############################
487 
# Traduction dynamique d'adresse en sortie
 480 
# Traduction dynamique d'adresse en sortie
488 
# Dynamic NAT on EXTIF
 481 
# Dynamic NAT on EXTIF
489 
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
 482 
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
490 
 
 483 
 
491 
# End of script
 484 
# End of script
492 
 
 485 
 
493 
 
 486 
 
494 
Generated by GNU Enscript 1.6.6.
 487 
Generated by GNU Enscript 1.6.6.
495 
 
 488 
 
496 
 
 489 
 
497 
 
 490