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#!/bin/bash
 1 
#!/bin/bash
2 
# $Id: alcasar-iptables.sh 2213 2017-05-08 21:55:08Z richard $
 2 
# $Id: alcasar-iptables.sh 2223 2017-05-14 14:38:01Z tom.houdayer $
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)
 44 
LDAP=`grep ^LDAP= $CONF_FILE|cut -d"=" -f2`				# LDAP external server active (on/off)
45 
LDAP=${LDAP:=off}
 45 
LDAP=${LDAP:=off}
46 
LDAP_IP=`grep ^LDAP_IP= $CONF_FILE|cut -d"=" -f2`			# WAN IP address to reduce LDAP WAN access (all ip allowed on LAN side)
 46 
LDAP_IP=`grep ^LDAP_IP= $CONF_FILE|cut -d"=" -f2`			# WAN IP address to reduce LDAP WAN access (all ip allowed on LAN side)
47 
LDAP_IP=${LDAP_IP:="0.0.0.0/0.0.0.0"}
 47 
LDAP_IP=${LDAP_IP:="0.0.0.0/0.0.0.0"}
48 
IPTABLES="/sbin/iptables"
 48 
IPTABLES="/sbin/iptables"
49 
IP_REHABILITEES="/etc/dansguardian/lists/exceptioniplist"		# Rehabilitated IP
 49 
IP_REHABILITEES="/etc/dansguardian/lists/exceptioniplist"		# Rehabilitated IP
50 
SAVE_DIR="/etc/sysconfig"						# Saving path
 50 
SAVE_DIR="/etc/sysconfig"						# Saving path
51 
 
 51 
 
52 
# Sauvegarde des SET des utilisateurs connectés si ils existent
 52 
# Sauvegarde des SET des utilisateurs connectés si ils existent
53 
# Saving SET of connected users if it exists
 53 
# Saving SET of connected users if it exists
54 
ipset list not_filtered 1>/dev/null 2>&1
 54 
ipset list not_filtered 1>/dev/null 2>&1
55 
if [ $? -eq 0 ];
 55 
if [ $? -eq 0 ];
56 
then
 56 
then
57 
	ipset save not_filtered > $TMP_users_set_save
 57 
	ipset save not_filtered > $TMP_users_set_save
58 
	ipset save havp >> $TMP_users_set_save
 58 
	ipset save havp >> $TMP_users_set_save
59 
	ipset save havp_bl >> $TMP_users_set_save
 59 
	ipset save havp_bl >> $TMP_users_set_save
60 
	ipset save havp_wl >> $TMP_users_set_save
 60 
	ipset save havp_wl >> $TMP_users_set_save
61 
	ipset save not_auth_yet >> $TMP_users_set_save
 - 
 
62 
	ipset save users_list >> $TMP_users_set_save
 - 
 
63 
	ipset save proto_0 >> $TMP_users_set_save
 61 
	ipset save proto_0 >> $TMP_users_set_save
64 
	ipset save proto_1 >> $TMP_users_set_save
 62 
	ipset save proto_1 >> $TMP_users_set_save
65 
	ipset save proto_2 >> $TMP_users_set_save
 63 
	ipset save proto_2 >> $TMP_users_set_save
66 
	ipset save proto_3 >> $TMP_users_set_save
 64 
	ipset save proto_3 >> $TMP_users_set_save
67 
fi
 65 
fi
68 
 
 66 
 
69 
# loading of NetFlow probe (ipt_NETFLOW kernel module)
 67 
# loading of NetFlow probe (ipt_NETFLOW kernel module)
70 
modprobe ipt_NETFLOW destination=127.0.0.1:2055
 68 
modprobe ipt_NETFLOW destination=127.0.0.1:2055
71 
 
 69 
 
72 
# Effacement des règles existantes
 70 
# Effacement des règles existantes
73 
# Flush all existing rules
 71 
# Flush all existing rules
74 
$IPTABLES -F
 72 
$IPTABLES -F
75 
$IPTABLES -t nat -F
 73 
$IPTABLES -t nat -F
76 
$IPTABLES -t mangle -F
 74 
$IPTABLES -t mangle -F
77 
$IPTABLES -F INPUT
 75 
$IPTABLES -F INPUT
78 
$IPTABLES -F FORWARD
 76 
$IPTABLES -F FORWARD
79 
$IPTABLES -F OUTPUT
 77 
$IPTABLES -F OUTPUT
80 
 
 78 
 
81 
# Suppression des chaines utilisateurs sur les tables filter et nat
 79 
# Suppression des chaines utilisateurs sur les tables filter et nat
82 
# Flush non default rules on filter and nat tables
 80 
# Flush non default rules on filter and nat tables
83 
$IPTABLES -X
 81 
$IPTABLES -X
84 
$IPTABLES -t nat -X
 82 
$IPTABLES -t nat -X
85 
 
 83 
 
86 
# Stratégies par défaut
 84 
# Stratégies par défaut
87 
# Default policies
 85 
# Default policies
88 
$IPTABLES -P INPUT DROP
 86 
$IPTABLES -P INPUT DROP
89 
$IPTABLES -P FORWARD DROP
 87 
$IPTABLES -P FORWARD DROP
90 
$IPTABLES -P OUTPUT DROP
 88 
$IPTABLES -P OUTPUT DROP
91 
$IPTABLES -t nat -P PREROUTING ACCEPT
 89 
$IPTABLES -t nat -P PREROUTING ACCEPT
92 
$IPTABLES -t nat -P POSTROUTING ACCEPT
 90 
$IPTABLES -t nat -P POSTROUTING ACCEPT
93 
$IPTABLES -t nat -P OUTPUT ACCEPT
 91 
$IPTABLES -t nat -P OUTPUT ACCEPT
94 
 
 92 
 
95 
 
 93 
 
96 
#############################
 94 
#############################
97 
#          IPSET            #
 95 
#          IPSET            #
98 
#############################
 96 
#############################
99 
 
 97 
 
100 
# destruction de tous les SET
 98 
# destruction de tous les SET
101 
# destroy all SET
 99 
# destroy all SET
102 
ipset flush
 100 
ipset flush
103 
ipset destroy
 101 
ipset destroy
104 
 
 102 
 
105 
###### BL set  ###########
 103 
###### BL set  ###########
106 
# Calcul de la taille / Compute the length
 104 
# Calcul de la taille / Compute the length
107 
bl_set_length=$(wc -l $BL_IP_CAT/* | awk '{print $1}' | tail -n 1)
 105 
bl_set_length=$(wc -l $BL_IP_CAT/* | awk '{print $1}' | tail -n 1)
108 
# Chargement / loading
 106 
# Chargement / loading
109 
echo "create bl_ip_blocked hash:net family inet hashsize 1024 maxelem $bl_set_length" > $TMP_set_save
 107 
echo "create bl_ip_blocked hash:net family inet hashsize 1024 maxelem $bl_set_length" > $TMP_set_save
110 
for category in `ls -1 $BL_IP_CAT | cut -d '@' -f1`
 108 
for category in `ls -1 $BL_IP_CAT | cut -d '@' -f1`
111 
do
 109 
do
112 
	cat $BL_IP_CAT/$category >> $TMP_set_save
 110 
	cat $BL_IP_CAT/$category >> $TMP_set_save
113 
done
 111 
done
114 
ipset -! restore < $TMP_set_save
 112 
ipset -! restore < $TMP_set_save
115 
rm -f $TMP_set_save
 113 
rm -f $TMP_set_save
116 
# Suppression des ip réhabilitées / Removing of rehabilitated ip
 114 
# Suppression des ip réhabilitées / Removing of rehabilitated ip
117 
for ip in $(cat $IP_REHABILITEES)
 115 
for ip in $(cat $IP_REHABILITEES)
118 
do
 116 
do
119 
	ipset del bl_ip_blocked $ip
 117 
	ipset del bl_ip_blocked $ip
120 
done
 118 
done
121 
 
 119 
 
122 
###### WL set  ###########
 120 
###### WL set  ###########
123 
# taille fixe, car peupler par dnsmasq / fixe length due to dnsmasq dynamic loading
 121 
# taille fixe, car peupler par dnsmasq / fixe length due to dnsmasq dynamic loading
124 
wl_set_length=65536
 122 
wl_set_length=65536
125 
# Chargement Loading
 123 
# Chargement Loading
126 
echo "create wl_ip_allowed hash:net family inet hashsize 1024 maxelem $wl_set_length" > $TMP_set_save
 124 
echo "create wl_ip_allowed hash:net family inet hashsize 1024 maxelem $wl_set_length" > $TMP_set_save
127 
#get ip-wl files from ACC
 125 
#get ip-wl files from ACC
128 
for category in `ls -1 $WL_IP_CAT |cut -d '@' -f1`
 126 
for category in `ls -1 $WL_IP_CAT |cut -d '@' -f1`
129 
do
 127 
do
130 
	cat $WL_IP_CAT/$category >> $TMP_set_save
 128 
	cat $WL_IP_CAT/$category >> $TMP_set_save
131 
done
 129 
done
132 
ipset -! restore < $TMP_set_save
 130 
ipset -! restore < $TMP_set_save
133 
rm -f $TMP_set_save
 131 
rm -f $TMP_set_save
134 
 
 132 
 
135 
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET
133 
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET
136 
# Restoring the connected users SETs if available, otherwise creating SETs
 134 
# Restoring the connected users SETs if available, otherwise creating SETs
137 
if [ -e $TMP_users_set_save ];
 135 
if [ -e $TMP_users_set_save ];
138 
then
 136 
then
139 
	ipset -! restore < $TMP_users_set_save
 137 
	ipset -! restore < $TMP_users_set_save
140 
	rm -f $TMP_users_set_save
 138 
	rm -f $TMP_users_set_save
141 
else
 139 
else
142 
	ipset create not_filtered hash:net hashsize 1024
 140 
	ipset create not_filtered hash:net hashsize 1024
143 
	ipset create havp hash:net hashsize 1024
 141 
	ipset create havp hash:net hashsize 1024
144 
	ipset create havp_bl hash:net hashsize 1024
 142 
	ipset create havp_bl hash:net hashsize 1024
145 
	ipset create havp_wl hash:net hashsize 1024
 143 
	ipset create havp_wl hash:net hashsize 1024
146 
	#utilisé pour l'interception des utilisateurs non authentifiés au réseau
 - 
 
147 
	#used for intercepting users not connected to the network
 - 
 
148 
	ipset create not_auth_yet hash:net hashsize 1024
 - 
 
149 
	ipset create users_list list:set
 - 
 
150 
	ipset add users_list havp
 - 
 
151 
	ipset add users_list havp_wl
 - 
 
152 
	ipset add users_list havp_bl
 - 
 
153 
	ipset add users_list not_filtered
 - 
 
154 
	ipset add users_list not_auth_yet
 - 
 
155 
	#pour les filtrages de protocole par utilisateur
 144 
	#pour les filtrages de protocole par utilisateur
156 
	ipset create proto_0 hash:net hashsize 1024
 145 
	ipset create proto_0 hash:net hashsize 1024
157 
	ipset create proto_1 hash:net hashsize 1024
 146 
	ipset create proto_1 hash:net hashsize 1024
158 
	ipset create proto_2 hash:net hashsize 1024
 147 
	ipset create proto_2 hash:net hashsize 1024
159 
	ipset create proto_3 hash:net hashsize 1024
 148 
	ipset create proto_3 hash:net hashsize 1024
160 
fi
 149 
fi
161 
 
 150 
 
162 
#############################
 151 
#############################
163 
#       PREROUTING          #
 152 
#       PREROUTING          #
164 
#############################
 153 
#############################
165 
 
 154 
 
166 
# Redirection des requetes DNS des utilisateurs non connectés dans le DNS-Blackhole
 - 
 
167 
# Redirect users not connected DNS requests in DNS-Blackhole
 - 
 
168 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set ! --match-set users_list src -d $PRIVATE_IP -p tcp --dport domain -j REDIRECT --to-port 56
 - 
 
169 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set ! --match-set users_list src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 56
 - 
 
170 
 
 - 
 
171 
# Marquage des paquets qui tentent d'accéder directement à un serveur sans authentification en mode proxy pour pouvoir les rejeter en INPUT
 155 
# Marquage des paquets qui tentent d'accéder directement à un serveur sans authentification en mode proxy pour pouvoir les rejeter en INPUT
172 
# Mark packets that attempt to directly access a server without authentication with proxy client to reject them in INPUT rules
 156 
# Mark packets that attempt to directly access a server without authentication with proxy client to reject them in INPUT rules
173 
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp -m tcp --dport 80 -m string --string 'GET http' --algo bm --from 50 --to 70 -j MARK --set-mark 10
 157 
#$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
174 
 
 158 
 
175 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au 8080 (DansGuardian) pour pouvoir les rejeter en INPUT
 159 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au 8080 (DansGuardian) pour pouvoir les rejeter en INPUT
176 
# Mark (and log) the direct attempts to TCP port 8090 (dansguardian) in order to REJECT them in INPUT rules
 160 
# Mark (and log) the direct attempts to TCP port 8090 (dansguardian) in order to REJECT them in INPUT rules
177 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-prefix "RULE direct-proxy -- DENY "
 161 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-prefix "RULE direct-proxy -- DENY "
178 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
 162 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
179 
 
 163 
 
180 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port 8090 (tinyproxy) pour pouvoir les rejeter en INPUT
 164 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port 8090 (tinyproxy) pour pouvoir les rejeter en INPUT
181 
# Mark (and log) the direct attempts to TCP port 8090 (tinyproxy) in order to REJECT them in INPUT rules
 165 
# Mark (and log) the direct attempts to TCP port 8090 (tinyproxy) in order to REJECT them in INPUT rules
182 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8090 -j NFLOG --nflog-prefix "RULE direct-proxy -- DENY "
 166 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8090 -j NFLOG --nflog-prefix "RULE direct-proxy -- DENY "
183 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8090 -j MARK --set-mark 2
 167 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8090 -j MARK --set-mark 2
184 
 
 168 
 
185 
# Marquage des paquets qui tentent d'accéder directement au port 54 (DNS-blacklist) pour pouvoir les rejeter en INPUT
 169 
# Marquage des paquets qui tentent d'accéder directement au port 54 (DNS-blacklist) pour pouvoir les rejeter en INPUT
186 
# Mark the direct attempts to port 54 (DNS-blacklist) in order to REJECT them in INPUT rules
 170 
# Mark the direct attempts to port 54 (DNS-blacklist) in order to REJECT them in INPUT rules
187 
$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 tcp --dport 54 -j MARK --set-mark 3
188 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 54 -j MARK --set-mark 3
 172 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 54 -j MARK --set-mark 3
189 
 
 173 
 
190 
# Marquage des paquets qui tentent d'accéder directement au port 55 (DNS-Whitelist) pour pouvoir les rejeter en INPUT
 174 
# Marquage des paquets qui tentent d'accéder directement au port 55 (DNS-Whitelist) pour pouvoir les rejeter en INPUT
191 
# Mark the direct attempts to port 55 (DNS-whitelist) in order to REJECT them in INPUT rules
 175 
# Mark the direct attempts to port 55 (DNS-whitelist) in order to REJECT them in INPUT rules
192 
$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 tcp --dport 55 -j MARK --set-mark 4
193 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 55 -j MARK --set-mark 4
 177 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 55 -j MARK --set-mark 4
194 
 
 178 
 
195 
# Marquage des paquets qui tentent d'accéder directement au port 56 (DNS-Blackhole) pour pouvoir les rejeter en INPUT
 179 
# Marquage des paquets qui tentent d'accéder directement au port 56 (DNS-Blackhole) pour pouvoir les rejeter en INPUT
196 
# Mark the direct attempts to port 56 (DNS-blackhole) in order to REJECT them in INPUT rules
 180 
# Mark the direct attempts to port 56 (DNS-blackhole) in order to REJECT them in INPUT rules
197 
$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 tcp --dport 56 -j MARK --set-mark 5
198 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 56 -j MARK --set-mark 5
 182 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 56 -j MARK --set-mark 5
199 
 
 183 
 
200 
# redirection DNS des usagers 'havp_bl' vers le port 54
 184 
# redirection DNS des usagers 'havp_bl' vers le port 54
201 
# redirect DNS of 'havp_bl' users to port 54
 185 
# redirect DNS of 'havp_bl' users to port 54
202 
$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 
$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
203 
 
 187 
 
204 
# redirection DNS des usagers 'havp_wl' vers le port 55
 188 
# redirection DNS des usagers 'havp_wl' vers le port 55
205 
# redirect DNS of 'havp_wl' users to port 55
 189 
# redirect DNS of 'havp_wl' users to port 55
206 
$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 
$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
207 
 
 191 
 
208 
# Journalisation HTTP_Internet des usagers 'havp_bl' (paquets SYN uniquement). Les autres protocoles sont journalisés en FORWARD par netflow.
192 
# Journalisation HTTP_Internet des usagers 'havp_bl' (paquets SYN uniquement). Les autres protocoles sont journalisés en FORWARD par netflow.
209 
# Log Internet HTTP of 'havp_bl' users" (only syn packets). Other protocols are logged in FORWARD by netflow
 193 
# Log Internet HTTP of 'havp_bl' users" (only syn packets). Other protocols are logged in FORWARD by netflow
210 
$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-prefix "RULE F_http -- ACCEPT "
 194 
$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-prefix "RULE F_http -- ACCEPT "
211 
 
 195 
 
212 
# Redirection HTTP des usagers 'havp_bl' cherchant à joindre les IP de la blacklist vers ALCASAR (page 'accès interdit')
 196 
# Redirection HTTP des usagers 'havp_bl' cherchant à joindre les IP de la blacklist vers ALCASAR (page 'accès interdit')
213 
# Redirect HTTP of 'havp_bl' users who want blacklist IP to ALCASAR ('access denied' page)
 197 
# Redirect HTTP of 'havp_bl' users who want blacklist IP to ALCASAR ('access denied' page)
214 
$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 
$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
215 
 
 199 
 
216 
# Redirection HTTP des usagers 'havp_wl' cherchant à joindre les IP qui ne sont pas dans la WL vers ALCASAR (page 'accès interdit')
 200 
# Redirection HTTP des usagers 'havp_wl' cherchant à joindre les IP qui ne sont pas dans la WL vers ALCASAR (page 'accès interdit')
217 
# Redirect HTTP of 'havp_wl' users who want IP not in the WL to ALCASAR ('access denied' page)
 201 
# Redirect HTTP of 'havp_wl' users who want IP not in the WL to ALCASAR ('access denied' page)
218 
$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 
$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
219 
 
 203 
 
220 
# Redirection des requêtes HTTP sortantes des usagers 'havp_bl' vers DansGuardian
 204 
# Redirection des requêtes HTTP sortantes des usagers 'havp_bl' vers DansGuardian
221 
# Redirect outbound HTTP requests of "BL" users to DansGuardian (transparent proxy)
 205 
# Redirect outbound HTTP requests of "BL" users to DansGuardian (transparent proxy)
222 
$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 
$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
223 
 
 207 
 
224 
# Redirection des requêtes HTTP sortantes des usager 'havp_wl' et 'havp' vers Tinyproxy
 208 
# Redirection des requêtes HTTP sortantes des usager 'havp_wl' et 'havp' vers Tinyproxy
225 
# Redirect outbound HTTP requests for "WL-antivirus" users to Tinyproxy
 209 
# Redirect outbound HTTP requests for "WL-antivirus" users to Tinyproxy
226 
$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_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
227 
$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 
$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
228 
 
 212 
 
229 
# Redirection des requêtes NTP vers le serveur NTP local
 213 
# Redirection des requêtes NTP vers le serveur NTP local
230 
# Redirect NTP request in local NTP server
 214 
# Redirect NTP request in local NTP server
231 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
 215 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
232 
 
 216 
 
233 
#############################
 217 
#############################
234 
#         INPUT             #
 218 
#         INPUT             #
235 
#############################
 219 
#############################
236 
 
 220 
 
237 
# Tout passe sur loopback
 221 
# Tout passe sur loopback
238 
# accept all on loopback
 222 
# accept all on loopback
239 
$IPTABLES -A INPUT -i lo -j ACCEPT
 223 
$IPTABLES -A INPUT -i lo -j ACCEPT
240 
$IPTABLES -A OUTPUT -o lo -j ACCEPT
 224 
$IPTABLES -A OUTPUT -o lo -j ACCEPT
241 
 
 225 
 
242 
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
 226 
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
243 
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
 227 
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
244 
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
 228 
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
245 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
 229 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
246 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
 230 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
247 
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
 231 
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
248 
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
 232 
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
249 
 
 233 
 
250 
# Si configéré, on autorise les réponses DHCP
234 
# Si configéré, on autorise les réponses DHCP
251 
# Allow DHCP answers if configured
 235 
# Allow DHCP answers if configured
252 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
 236 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
253 
if [[ "$public_ip_mask" == "dhcp" ]]
 237 
if [[ "$public_ip_mask" == "dhcp" ]]
254 
then
 238 
then
255 
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 68 -j ACCEPT
 239 
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 68 -j ACCEPT
256 
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 68 -j ACCEPT
 240 
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 68 -j ACCEPT
257 
fi
 241 
fi
258 
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
 242 
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
259 
# Drop broadcast & multicast on EXTIF to avoid log
243 
# Drop broadcast & multicast on EXTIF to avoid log
260 
$IPTABLES -A INPUT -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
 244 
$IPTABLES -A INPUT -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
261 
 
 245 
 
262 
# On autorise les retours de connexions légitimes par INPUT
 246 
# On autorise les retours de connexions légitimes par INPUT
263 
# Conntrack on INPUT
 247 
# Conntrack on INPUT
264 
$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
 248 
$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
265 
 
 249 
 
266 
# 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 
# On interdit les connexions directes au port utilisé par DansGuardian (8080). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
267 
# Deny direct connections on DansGuardian port (8080). The concerned paquets have been marked and logged in mangle table (PREROUTING)
 251 
# Deny direct connections on DansGuardian port (8080). The concerned paquets have been marked and logged in mangle table (PREROUTING)
268 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset
 252 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset
269 
 
 253 
 
270 
# Autorisation des connexions légitimes à DansGuardian
254 
# Autorisation des connexions légitimes à DansGuardian
271 
# Allow connections for DansGuardian
 255 
# Allow connections for DansGuardian
272 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m state --state NEW --syn -j ACCEPT
 256 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m state --state NEW --syn -j ACCEPT
273 
 
 257 
 
274 
# 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 
# On interdit les connexions directes au port utilisé par tinyproxy (8090). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
275 
# Deny direct connections on tinyproxy port (8090). The concerned paquets have been marked in mangle table (PREROUTING)
 259 
# Deny direct connections on tinyproxy port (8090). The concerned paquets have been marked in mangle table (PREROUTING)
276 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8090 -m mark --mark 2 -j REJECT --reject-with tcp-reset
 260 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8090 -m mark --mark 2 -j REJECT --reject-with tcp-reset
277 
 
 261 
 
278 
# Autorisation des connexions légitimes vers tinyproxy
262 
# Autorisation des connexions légitimes vers tinyproxy
279 
# Allow connections to tinyproxy
 263 
# Allow connections to tinyproxy
280 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8090 -m state --state NEW --syn -j ACCEPT
 264 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8090 -m state --state NEW --syn -j ACCEPT
281 
 
 265 
 
282 
# On interdit les connexions directes au port 54 (DNS-blacklist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 266 
# On interdit les connexions directes au port 54 (DNS-blacklist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
283 
# Deny direct connections on port 54 (DNS-blacklist). The concerned paquets are marked in mangle table (PREROUTING)
 267 
# Deny direct connections on port 54 (DNS-blacklist). The concerned paquets are marked in mangle table (PREROUTING)
284 
$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 udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable
285 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 3 -j REJECT --reject-with tcp-reset
 269 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 3 -j REJECT --reject-with tcp-reset
286 
 
 270 
 
287 
# On interdit les connexions directes au port 55 (DNS-whitelist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 271 
# On interdit les connexions directes au port 55 (DNS-whitelist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
288 
# Deny direct connections on port 55 (DNS-whitelist). The concerned paquets are marked in mangle table (PREROUTING)
 272 
# Deny direct connections on port 55 (DNS-whitelist). The concerned paquets are marked in mangle table (PREROUTING)
289 
$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 udp --dport 55 -m mark --mark 4 -j REJECT --reject-with icmp-port-unreachable
290 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 3 -j REJECT --reject-with tcp-reset
 274 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 3 -j REJECT --reject-with tcp-reset
291 
 
 275 
 
292 
# On interdit les connexions directes au port 56 (DNS-Blackhole). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 276 
# On interdit les connexions directes au port 56 (DNS-Blackhole). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
293 
# Deny direct connections on port 56 (DNS-blackhole). The concerned paquets are marked in mangle table (PREROUTING)
 277 
# Deny direct connections on port 56 (DNS-blackhole). The concerned paquets are marked in mangle table (PREROUTING)
294 
$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 udp --dport 56 -m mark --mark 5 -j REJECT --reject-with icmp-port-unreachable
295 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 56 -m mark --mark 3 -j REJECT --reject-with tcp-reset
 279 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 56 -m mark --mark 3 -j REJECT --reject-with tcp-reset
296 
 
 280 
 
297 
# autorisation des connexion légitime à DNSMASQ (avec blacklist)
 281 
# autorisation des connexion légitime à DNSMASQ (avec blacklist)
298 
# Allow connections for DNSMASQ (with blacklist)
 282 
# Allow connections for DNSMASQ (with blacklist)
299 
$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 udp --dport 54 -j ACCEPT
300 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 54 -j ACCEPT
 284 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 54 -j ACCEPT
301 
 
 285 
 
302 
# autorisation des connexion légitime à DNSMASQ (avec whitelist)
 286 
# autorisation des connexion légitime à DNSMASQ (avec whitelist)
303 
# Allow connections for DNSMASQ (with whitelist)
 287 
# Allow connections for DNSMASQ (with whitelist)
304 
$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 udp --dport 55 -j ACCEPT
305 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 55 -j ACCEPT
 289 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 55 -j ACCEPT
306 
 
 290 
 
307 
# autorisation des connexion légitime à DNSMASQ (mode blackhole)
 291 
# autorisation des connexion légitime à DNSMASQ (mode blackhole)
308 
# Allow connections for DNSMASQ (blackhole mode)
 292 
# Allow connections for DNSMASQ (blackhole mode)
309 
$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 udp --dport 56 -j ACCEPT
310 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 56 -j ACCEPT
 294 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 56 -j ACCEPT
311 
 
 295 
 
312 
# Accès direct aux services internes
 296 
# Accès direct aux services internes
313 
# Internal services access
 297 
# Internal services access
314 
$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 udp --dport domain -j ACCEPT	# DNS
315 
$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 tcp --dport domain -j ACCEPT	# DNS
316 
$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 8 -j ACCEPT	# Réponse ping # ping responce
317 
$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 icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
318 
$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 https -j ACCEPT	# Pages d'authentification et MCC # authentication pages and MCC
319 
$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 http -j ACCEPT	# Page d'avertissement filtrage # Filtering warning pages
320 
$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
 304 
$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
321 
$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 
$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
322 
 
 306 
 
323 
# SSHD rules if activate
307 
# SSHD rules if activate
324 
if [ $SSH = on ]
 308 
if [ $SSH = on ]
325 
	then
 309 
	then
326 
	$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 -m state --state NEW -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-LAN -- ACCEPT"
327 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -j ACCEPT
 311 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -j ACCEPT
328 
	$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 --syn -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-WAN -- ACCEPT"
329 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW -j ACCEPT
 313 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW -j ACCEPT
330 
fi
 314 
fi
331 
 
 315 
 
332 
# Insertion de règles locales
 316 
# Insertion de règles locales
333 
# Here, we add local rules (i.e. VPN from Internet)
 317 
# Here, we add local rules (i.e. VPN from Internet)
334 
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
 318 
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
335 
        . /usr/local/etc/alcasar-iptables-local.sh
 319 
        . /usr/local/etc/alcasar-iptables-local.sh
336 
fi
 320 
fi
337 
 
 321 
 
338 
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
 322 
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
339 
# Deny and log on INPUT from the LAN
 323 
# Deny and log on INPUT from the LAN
340 
$IPTABLES -A INPUT -i $TUNIF -m state --state NEW -j NFLOG --nflog-prefix "RULE rej-int -- REJECT "
 324 
$IPTABLES -A INPUT -i $TUNIF -m state --state NEW -j NFLOG --nflog-prefix "RULE rej-int -- REJECT "
341 
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
 325 
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
342 
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
 326 
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
343 
 
 327 
 
344 
# Interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
 328 
# Interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
345 
# Reject INTIF access (only when chilli is down)
 329 
# Reject INTIF access (only when chilli is down)
346 
$IPTABLES -A INPUT -i $INTIF -j NFLOG --nflog-prefix "RULE Protect1 -- REJECT "
 330 
$IPTABLES -A INPUT -i $INTIF -j NFLOG --nflog-prefix "RULE Protect1 -- REJECT "
347 
$IPTABLES -A INPUT -i $INTIF -j REJECT
 331 
$IPTABLES -A INPUT -i $INTIF -j REJECT
348 
 
 332 
 
349 
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
 333 
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
350 
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
 334 
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
351 
$IPTABLES -A INPUT -i $EXTIF -m state --state NEW -j NFLOG --nflog-group 3 --nflog-threshold 10 --nflog-prefix "RULE rej-ext -- DROP"
 335 
$IPTABLES -A INPUT -i $EXTIF -m state --state NEW -j NFLOG --nflog-group 3 --nflog-threshold 10 --nflog-prefix "RULE rej-ext -- DROP"
352 
 
 336 
 
353 
#############################
 337 
#############################
354 
#        FORWARD            #
 338 
#        FORWARD            #
355 
#############################
 339 
#############################
356 
 
 340 
 
357 
# Blocage des IPs du SET bl_ip_blocked pour le SET havp_bl
 341 
# Blocage des IPs du SET bl_ip_blocked pour le SET havp_bl
358 
# Deny IPs of the SET bl_ip_blocked for the set havp_bl
 342 
# Deny IPs of the SET bl_ip_blocked for the set havp_bl
359 
$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 icmp -j REJECT --reject-with icmp-host-prohibited
360 
$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 udp -j REJECT --reject-with icmp-host-prohibited
361 
$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 
$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
362 
 
 346 
 
363 
# Rejet des requêtes DNS vers Internet
 347 
# Rejet des requêtes DNS vers Internet
364 
# Deny forward DNS
 348 
# Deny forward DNS
365 
$IPTABLES -A FORWARD -i $TUNIF -p udp --dport domain -j REJECT --reject-with icmp-port-unreachable
 349 
$IPTABLES -A FORWARD -i $TUNIF -p udp --dport domain -j REJECT --reject-with icmp-port-unreachable
366 
$IPTABLES -A FORWARD -i $TUNIF -p tcp --dport domain -j REJECT --reject-with tcp-reset
 350 
$IPTABLES -A FORWARD -i $TUNIF -p tcp --dport domain -j REJECT --reject-with tcp-reset
367 
 
 351 
 
368 
# Active le suivi de session
 352 
# Active le suivi de session
369 
# Allow Conntrack
 353 
# Allow Conntrack
370 
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
 354 
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
371 
 
 355 
 
372 
# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...)
356 
# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...)
373 
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
 357 
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
374 
if [ $nb_uamallowed != "0" ]
 358 
if [ $nb_uamallowed != "0" ]
375 
then
 359 
then
376 
	while read ip_allowed_line
360 
	while read ip_allowed_line
377 
	do
 361 
	do
378 
		ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
 362 
		ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
379 
		$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 NETFLOW
380 
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
 364 
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
381 
	done < /usr/local/etc/alcasar-uamallowed
 365 
	done < /usr/local/etc/alcasar-uamallowed
382 
fi
 366 
fi
383 
 
 367 
 
384 
# filtrage protocole par utilisateur (profile 1 : http, https)
 368 
# filtrage protocole par utilisateur (profile 1 : http, https)
385 
# protocols filtering for users (profil 1 : http, https)
 369 
# protocols filtering for users (profil 1 : http, https)
386 
	$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 tcp -m multiport ! --dports http,https -m state --state NEW -j REJECT --reject-with tcp-reset
387 
	$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 
	$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
388 
 
 372 
 
389 
# filtrage protocole par utilisateur (profile 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
 373 
# filtrage protocole par utilisateur (profile 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
390 
# protocols filtering for users (profil 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
 374 
# protocols filtering for users (profil 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
391 
 
 375 
 
392 
	$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 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
393 
	$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 
	$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
394 
 
 378 
 
395 
# filtrage protocole par utilisateur (profile 3 : personnalisable via l'ACC)
 379 
# filtrage protocole par utilisateur (profile 3 : personnalisable via l'ACC)
396 
# protocols filtering for users (profil 3 : customized with ACC)
 380 
# protocols filtering for users (profil 3 : customized with ACC)
397 
#profile 3 personalisables via l'ACC
 381 
#profile 3 personalisables via l'ACC
398 
custom_tcp_protocols_list='';custom_udp_protocols_list=''
 382 
custom_tcp_protocols_list='';custom_udp_protocols_list=''
399 
while read svc_line
 383 
while read svc_line
400 
do
 384 
do
401 
	svc_on=`echo $svc_line|cut -b1`
 385 
	svc_on=`echo $svc_line|cut -b1`
402 
	if [ $svc_on != "#" ]
 386 
	if [ $svc_on != "#" ]
403 
	then
387 
	then
404 
		svc_name=`echo $svc_line|cut -d" " -f1`
 388 
		svc_name=`echo $svc_line|cut -d" " -f1`
405 
		svc_port=`echo $svc_line|cut -d" " -f2`
 389 
		svc_port=`echo $svc_line|cut -d" " -f2`
406 
		if [ $svc_name = "icmp" ]
 390 
		if [ $svc_name = "icmp" ]
407 
		then
 391 
		then
408 
			svc_icmp="on"
 392 
			svc_icmp="on"
409 
		else
 393 
		else
410 
			if [ "$custom_tcp_protocols_list" == "" ]
 394 
			if [ "$custom_tcp_protocols_list" == "" ]
411 
			then
 395 
			then
412 
				custom_tcp_protocols_list=$svc_port
 396 
				custom_tcp_protocols_list=$svc_port
413 
			else
 397 
			else
414 
				custom_tcp_protocols_list=`echo $custom_tcp_protocols_list","$svc_port`
 398 
				custom_tcp_protocols_list=`echo $custom_tcp_protocols_list","$svc_port`
415 
			fi
 399 
			fi
416 
			udp_svc=`egrep "[[:space:]]$svc_port/udp" /etc/services|wc -l`
 400 
			udp_svc=`egrep "[[:space:]]$svc_port/udp" /etc/services|wc -l`
417 
			if [ $udp_svc = "1" ] # udp service exist
 401 
			if [ $udp_svc = "1" ] # udp service exist
418 
			then
 402 
			then
419 
				if [ "$custom_udp_protocols_list" == "" ]
 403 
				if [ "$custom_udp_protocols_list" == "" ]
420 
				then
 404 
				then
421 
					custom_udp_protocols_list=$svc_port
 405 
					custom_udp_protocols_list=$svc_port
422 
				else
 406 
				else
423 
					custom_udp_protocols_list=`echo $custom_udp_protocols_list","$svc_port`
 407 
					custom_udp_protocols_list=`echo $custom_udp_protocols_list","$svc_port`
424 
				fi
 408 
				fi
425 
			fi
 409 
			fi
426 
		fi
 410 
		fi
427 
	fi
 411 
	fi
428 
done < /usr/local/etc/alcasar-services
 412 
done < /usr/local/etc/alcasar-services
429 
	if [ "$custom_tcp_protocols_list" == "" ]
 413 
	if [ "$custom_tcp_protocols_list" == "" ]
430 
	then
 414 
	then
431 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -j REJECT
 415 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -j REJECT
432 
	else
 416 
	else
433 
		if [ "$svc_icmp" != "on" ]
 417 
		if [ "$svc_icmp" != "on" ]
434 
		then
 418 
		then
435 
			$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 
			$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
436 
		fi
 420 
		fi
437 
		$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 tcp -m multiport ! --dports $custom_tcp_protocols_list -m state --state NEW -j REJECT --reject-with tcp-reset
438 
		$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 
		$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
439 
	fi
 423 
	fi
440 
 
 424 
 
441 
# journalisation et autorisation des connections sortant du LAN
425 
# journalisation et autorisation des connections sortant du LAN
442 
# Allow forward connections with log
 426 
# Allow forward connections with log
443 
$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 NETFLOW
444 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ACCEPT
 428 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ACCEPT
445 
 
 429 
 
446 
#############################
 430 
#############################
447 
#         OUTPUT            #
 431 
#         OUTPUT            #
448 
#############################
 432 
#############################
449 
# On laisse tout sortir sur toutes les cartes sauf celle qui est connectée sur l'extérieur
 433 
# On laisse tout sortir sur toutes les cartes sauf celle qui est connectée sur l'extérieur
450 
# Everything is allowed but traffic through outside network interface
 434 
# Everything is allowed but traffic through outside network interface
451 
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
 435 
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
452 
 
 436 
 
453 
# Si configéré, on autorise les requêtes DHCP
437 
# Si configéré, on autorise les requêtes DHCP
454 
# Allow DHCP requests if configured
 438 
# Allow DHCP requests if configured
455 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
 439 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
456 
if [[ "$public_ip_mask" == "dhcp" ]]
 440 
if [[ "$public_ip_mask" == "dhcp" ]]
457 
then
 441 
then
458 
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 67 -j ACCEPT
 442 
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 67 -j ACCEPT
459 
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 67 -j ACCEPT
 443 
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 67 -j ACCEPT
460 
fi
 444 
fi
461 
 
 445 
 
462 
# On autorise les requêtes DNS vers les serveurs DNS identifiés
446 
# On autorise les requêtes DNS vers les serveurs DNS identifiés
463 
# Allow DNS requests to identified DNS servers
 447 
# Allow DNS requests to identified DNS servers
464 
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m state --state NEW -j ACCEPT
 448 
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m state --state NEW -j ACCEPT
465 
 
 449 
 
466 
# On autorise les requêtes HTTP sortantes
 450 
# On autorise les requêtes HTTP sortantes
467 
# HTTP requests are allowed
 451 
# HTTP requests are allowed
468 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
 452 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
469 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
 453 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
470 
 
 454 
 
471 
# On autorise les requêtes RSYNC sortantes (maj BL de Toulouse)
 455 
# On autorise les requêtes RSYNC sortantes (maj BL de Toulouse)
472 
# RSYNC requests are allowed (to update BL of Toulouse)
 456 
# RSYNC requests are allowed (to update BL of Toulouse)
473 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport rsync -j ACCEPT
 457 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport rsync -j ACCEPT
474 
 
 458 
 
475 
# On autorise les requêtes FTP
459 
# On autorise les requêtes FTP
476 
# FTP requests are allowed
 460 
# FTP requests are allowed
477 
modprobe nf_conntrack_ftp
 461 
modprobe nf_conntrack_ftp
478 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
 462 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
479 
$IPTABLES -A OUTPUT -o $EXTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
 463 
$IPTABLES -A OUTPUT -o $EXTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
480 
 
 464 
 
481 
# On autorise les requêtes NTP
465 
# On autorise les requêtes NTP
482 
# NTP requests are allowed
 466 
# NTP requests are allowed
483 
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
 467 
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
484 
 
 468 
 
485 
# On autorise les requêtes ICMP (ping)
469 
# On autorise les requêtes ICMP (ping)
486 
# ICMP (ping) requests are allowed
 470 
# ICMP (ping) requests are allowed
487 
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
 471 
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
488 
 
 472 
 
489 
# On autorise les requêtes LDAP si un serveur externe est configué
 473 
# On autorise les requêtes LDAP si un serveur externe est configué
490 
# LDAP requests are allowed if an external server is declared
 474 
# LDAP requests are allowed if an external server is declared
491 
if [ $LDAP = on ]
 475 
if [ $LDAP = on ]
492 
	then
 476 
	then
493 
	$IPTABLES -A OUTPUT -p tcp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
 477 
	$IPTABLES -A OUTPUT -p tcp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
494 
	$IPTABLES -A OUTPUT -p udp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
 478 
	$IPTABLES -A OUTPUT -p udp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
495 
fi
 479 
fi
496 
 
 480 
 
497 
#############################
 481 
#############################
498 
#       POSTROUTING         #
 482 
#       POSTROUTING         #
499 
#############################
 483 
#############################
500 
# Traduction dynamique d'adresse en sortie
 484 
# Traduction dynamique d'adresse en sortie
501 
# Dynamic NAT on EXTIF
 485 
# Dynamic NAT on EXTIF
502 
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
 486 
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
503 
 
 487 
 
504 
# End of script
 488 
# End of script
505 
 
 489 
 
506 
 
 490