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#!/bin/bash
 1 
#!/bin/bash
2 
# $Id: alcasar-iptables.sh 1147 2013-07-02 22:00:21Z richard $
 2 
# $Id: alcasar-iptables.sh 1154 2013-07-15 14:27:10Z crox53 $
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 write the netfilter rules for ALCASAR
 4 
# This script write the netfilter rules for ALCASAR
5 
# Rexy - 3abtux - CPN
 5 
# Rexy - 3abtux - CPN
6 
#
 6 
#
7 
# Reminders
 7 
# Reminders
8 
# There are three channels for log :
 8 
# There are three channels for log :
9 
#	1 (default) for tracability;
 9 
#	1 (default) for tracability;
10 
#	2 for secure admin (ssh);
 10 
#	2 for secure admin (ssh);
11 
#	3 for exterior access attempts.
 11 
#	3 for exterior access attempts.
12 
# The French Security Agency (ANSSI) rules was applied by 'this script
 12 
# The French Security Agency (ANSSI) rules was applied by 'this script
13 
# The bootps/dhcp (67) port is always open on tun0/eth1 by coova
13 
# The bootps/dhcp (67) port is always open on tun0/eth1 by coova
14 
conf_file="/usr/local/etc/alcasar.conf"
 14 
conf_file="/usr/local/etc/alcasar.conf"
15 
private_ip_mask=`grep PRIVATE_IP= $conf_file|cut -d"=" -f2`
 15 
private_ip_mask=`grep PRIVATE_IP= $conf_file|cut -d"=" -f2`
16 
private_ip_mask=${private_ip_mask:=192.168.182.1/24}
 16 
private_ip_mask=${private_ip_mask:=192.168.182.1/24}
17 
PRIVATE_IP=`echo $private_ip_mask | cut -d"/" -f1`			# ALCASAR LAN IP address
 17 
PRIVATE_IP=`echo $private_ip_mask | cut -d"/" -f1`			# ALCASAR LAN IP address
18 
private_network=`/bin/ipcalc -n $private_ip_mask|cut -d"=" -f2`		# LAN IP address (ie.: 192.168.182.0)
 18 
private_network=`/bin/ipcalc -n $private_ip_mask|cut -d"=" -f2`		# LAN IP address (ie.: 192.168.182.0)
19 
private_prefix=`/bin/ipcalc -p $private_ip_mask|cut -d"=" -f2`		# LAN prefix (ie. 24)
 19 
private_prefix=`/bin/ipcalc -p $private_ip_mask|cut -d"=" -f2`		# LAN prefix (ie. 24)
20 
PRIVATE_NETWORK_MASK=$private_network/$private_prefix			# Lan IP address + prefix (192.168.182.0/24)
 20 
PRIVATE_NETWORK_MASK=$private_network/$private_prefix			# Lan IP address + prefix (192.168.182.0/24)
21 
public_ip_mask=`grep PUBLIC_IP= $conf_file|cut -d"=" -f2`		# ALCASAR WAN IP address
 21 
public_ip_mask=`grep PUBLIC_IP= $conf_file|cut -d"=" -f2`		# ALCASAR WAN IP address
22 
PUBLIC_IP=`echo $public_ip_mask | cut -d"/" -f1`
 22 
PUBLIC_IP=`echo $public_ip_mask | cut -d"/" -f1`
23 
dns1=`grep DNS1= $conf_file|cut -d"=" -f2`				# first public DNS server
 23 
dns1=`grep DNS1= $conf_file|cut -d"=" -f2`				# first public DNS server
24 
dns1=${dns1:=208.67.220.220}
 24 
dns1=${dns1:=208.67.220.220}
25 
dns2=`grep DNS2= $conf_file|cut -d"=" -f2`				# second public DNS server
 25 
dns2=`grep DNS2= $conf_file|cut -d"=" -f2`				# second public DNS server
26 
dns2=${dns2:=208.67.222.222}
 26 
dns2=${dns2:=208.67.222.222}
27 
DNSSERVERS="$dns1,$dns2"						# first and second DNS IP servers addresses
 27 
DNSSERVERS="$dns1,$dns2"						# first and second DNS IP servers addresses
28 
PROTOCOLS_FILTERING=`grep PROTOCOLS_FILTERING= $conf_file|cut -d"=" -f2`	# Network protocols filter (on/off)
 28 
PROTOCOLS_FILTERING=`grep PROTOCOLS_FILTERING= $conf_file|cut -d"=" -f2`	# Network protocols filter (on/off)
29 
PROTOCOLS_FILTERING=${PROTOCOLS_FILTERING:=off}
 29 
PROTOCOLS_FILTERING=${PROTOCOLS_FILTERING:=off}
30 
DNS_FILTERING=`grep DNS_FILTERING= $conf_file|cut -d"=" -f2`		# DNS and URLs filter (on/off)
 30 
DNS_FILTERING=`grep DNS_FILTERING= $conf_file|cut -d"=" -f2`		# DNS and URLs filter (on/off)
31 
DNS_FILTERING=${DNS_FILTERING:=off}
 31 
DNS_FILTERING=${DNS_FILTERING:=off}
32 
BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
 32 
BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
33 
QOS=`grep QOS= $conf_file|cut -d"=" -f2`				# QOS (on/off)
 33 
QOS=`grep QOS= $conf_file|cut -d"=" -f2`				# QOS (on/off)
34 
QOS=${QOS:=off}
 34 
QOS=${QOS:=off}
35 
SSH=`grep SSH= $conf_file|cut -d"=" -f2`				# sshd active (on/off)
 35 
SSH=`grep SSH= $conf_file|cut -d"=" -f2`				# sshd active (on/off)
36 
SSH=${SSH:=off}
 36 
SSH=${SSH:=off}
37 
SSH_ADMIN_FROM=`grep SSH_ADMIN_FROM= $conf_file|cut -d"=" -f2`
 37 
SSH_ADMIN_FROM=`grep SSH_ADMIN_FROM= $conf_file|cut -d"=" -f2`
38 
SSH_ADMIN_FROM=${SSH_ADMIN_FROM:="0.0.0.0/0.0.0.0"}			# WAN IP address to reduce ssh access (all ip allowed on LAN side)
 38 
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)
39 
LDAP=`grep LDAP= $conf_file|cut -d"=" -f2`				# LDAP external server active (on/off)
 39 
LDAP=`grep LDAP= $conf_file|cut -d"=" -f2`				# LDAP external server active (on/off)
40 
LDAP=${LDAP:=off}
 40 
LDAP=${LDAP:=off}
41 
LDAP_IP=`grep LDAP_IP= $conf_file|cut -d"=" -f2`			# WAN IP address to reduce LDAP WAN access (all ip allowed on LAN side)
 41 
LDAP_IP=`grep LDAP_IP= $conf_file|cut -d"=" -f2`			# WAN IP address to reduce LDAP WAN access (all ip allowed on LAN side)
42 
LDAP_IP=${LDAP_IP:="0.0.0.0/0.0.0.0"}
 42 
LDAP_IP=${LDAP_IP:="0.0.0.0/0.0.0.0"}
43 
EXTIF="eth0"
 43 
EXTIF="eth0"
44 
INTIF="eth1"
 44 
INTIF="eth1"
45 
TUNIF="tun0"								# listen device for chilli daemon
 45 
TUNIF="tun0"								# listen device for chilli daemon
46 
IPTABLES="/sbin/iptables"
 46 
IPTABLES="/sbin/iptables"
47 
 
 47 
 
- 
 
 48 
#lancement du module kernel ipt_NETFLOW (module iptables)
- 
 
 49 
modprobe ipt_NETFLOW destination=127.0.0.1:2055
- 
 
 50 
 
48 
# Effacement des règles existantes
 51 
# Effacement des règles existantes
49 
# Flush all existing rules
 52 
# Flush all existing rules
50 
$IPTABLES -F
 53 
$IPTABLES -F
51 
$IPTABLES -t nat -F
 54 
$IPTABLES -t nat -F
52 
$IPTABLES -t mangle -F
 55 
$IPTABLES -t mangle -F
53 
$IPTABLES -F INPUT
 56 
$IPTABLES -F INPUT
54 
$IPTABLES -F FORWARD
 57 
$IPTABLES -F FORWARD
55 
$IPTABLES -F OUTPUT
 58 
$IPTABLES -F OUTPUT
56 
 
 59 
 
57 
# Suppression des chaines utilisateurs sur les tables filter et nat
 60 
# Suppression des chaines utilisateurs sur les tables filter et nat
58 
# Flush non default rules on filter and nat tables
 61 
# Flush non default rules on filter and nat tables
59 
$IPTABLES -X
 62 
$IPTABLES -X
60 
$IPTABLES -t nat -X
 63 
$IPTABLES -t nat -X
61 
 
 64 
 
62 
# Stratégies par défaut
 65 
# Stratégies par défaut
63 
# Default policies
 66 
# Default policies
64 
$IPTABLES -P INPUT DROP
 67 
$IPTABLES -P INPUT DROP
65 
$IPTABLES -P FORWARD DROP
 68 
$IPTABLES -P FORWARD DROP
66 
$IPTABLES -P OUTPUT DROP
 69 
$IPTABLES -P OUTPUT DROP
67 
$IPTABLES -t nat -P PREROUTING ACCEPT
 70 
$IPTABLES -t nat -P PREROUTING ACCEPT
68 
$IPTABLES -t nat -P POSTROUTING ACCEPT
 71 
$IPTABLES -t nat -P POSTROUTING ACCEPT
69 
$IPTABLES -t nat -P OUTPUT ACCEPT
 72 
$IPTABLES -t nat -P OUTPUT ACCEPT
70 
 
 73 
 
71 
#############################
 74 
#############################
72 
#       PREROUTING          #
 75 
#       PREROUTING          #
73 
#############################
 76 
#############################
74 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement à DansGuardian pour pouvoir les rejeter en INPUT
 77 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement à DansGuardian pour pouvoir les rejeter en INPUT
75 
# mark (and log) the dansguardian bypass attempts in order to DROP them in INPUT rules
 78 
# mark (and log) the dansguardian bypass attempts in order to DROP them in INPUT rules
76 
# $IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j ULOG --ulog-prefix "RULE direct-proxy -- DENY "
 79 
# $IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j ULOG --ulog-prefix "RULE direct-proxy -- DENY "
77 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
 80 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
78 
 
 81 
 
79 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port udp 54 pour pouvoir les rejeter en INPUT
 82 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port udp 54 pour pouvoir les rejeter en INPUT
80 
# Mark (and log) the udp 54 direct attempts to REJECT them in INPUT rules
 83 
# Mark (and log) the udp 54 direct attempts to REJECT them in INPUT rules
81 
# Remarque : Ce port n'est ouvert que lorsque le filtrage est activé
 84 
# Remarque : Ce port n'est ouvert que lorsque le filtrage est activé
82 
# Remark : this port is only open when filtering is on
 85 
# Remark : this port is only open when filtering is on
83 
# $IPTABLES -A PREROUTING -t nat -i $TUNIF -p udp -d $PRIVATE_IP -m udp --dport 54 -j ULOG --ulog-prefix "RULE DNS-proxy -- DENY "
 86 
# $IPTABLES -A PREROUTING -t nat -i $TUNIF -p udp -d $PRIVATE_IP -m udp --dport 54 -j ULOG --ulog-prefix "RULE DNS-proxy -- DENY "
84 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 2
 87 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 2
85 
 
 88 
 
86 
# Si le filtrage DNS est activé, redirection des flux DNS vers le port 54 (dns+blackhole) sauf pour les IP en exceptions
89 
# Si le filtrage DNS est activé, redirection des flux DNS vers le port 54 (dns+blackhole) sauf pour les IP en exceptions
87 
# If DNS filter is on, redirect DNS request to udp 54 (dns+blackhole) except for exception IP addresses
 90 
# If DNS filter is on, redirect DNS request to udp 54 (dns+blackhole) except for exception IP addresses
88 
if [ $DNS_FILTERING = on ]; then
 91 
if [ $DNS_FILTERING = on ]; then
89 
	# Compute exception IP
 92 
	# Compute exception IP
90 
	nb_exceptions=`wc -l /usr/local/etc/alcasar-filter-exceptions | cut -d" " -f1`
 93 
	nb_exceptions=`wc -l /usr/local/etc/alcasar-filter-exceptions | cut -d" " -f1`
91 
	if [ $nb_exceptions != "0" ]
 94 
	if [ $nb_exceptions != "0" ]
92 
	then
 95 
	then
93 
		while read ip_exception
96 
		while read ip_exception
94 
		do
 97 
		do
95 
			$IPTABLES -A PREROUTING -t nat -i $TUNIF -p udp -s $ip_exception -d $PRIVATE_IP --dport domain -j ACCEPT
 98 
			$IPTABLES -A PREROUTING -t nat -i $TUNIF -p udp -s $ip_exception -d $PRIVATE_IP --dport domain -j ACCEPT
96 
		done < /usr/local/etc/alcasar-filter-exceptions
 99 
		done < /usr/local/etc/alcasar-filter-exceptions
97 
	fi
 100 
	fi
98 
		$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 54
 101 
		$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 54
99 
fi
 102 
fi
100 
 
 103 
 
101 
# Journalisation des requètes HTTP vers Internet (seulement les paquets SYN) - Les autres protocoles sont journalisés en FORWARD
 104 
# Journalisation des requètes HTTP vers Internet (seulement les paquets SYN) - Les autres protocoles sont journalisés en FORWARD
102 
# Log HTTP requests to Internet (only syn packets) - Other protocols are log in FORWARD
 105 
# Log HTTP requests to Internet (only syn packets) - Other protocols are log in FORWARD
103 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p tcp --dport http -m state --state NEW -j ULOG --ulog-prefix "RULE F_http -- ACCEPT "
 106 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p tcp --dport http -m state --state NEW -j ULOG --ulog-prefix "RULE F_http -- ACCEPT "
104 
# Redirection des requêtes HTTP vers DansGuardian (proxy transparent)
 107 
# Redirection des requêtes HTTP vers DansGuardian (proxy transparent)
105 
# Redirect HTTP requests in DansGuardian (transparent proxy)
 108 
# Redirect HTTP requests in DansGuardian (transparent proxy)
106 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8080
 109 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8080
107 
 
 110 
 
108 
# Redirection des requêtes NTP vers le serveur NTP local
 111 
# Redirection des requêtes NTP vers le serveur NTP local
109 
# Redirect NTP request in local NTP server
 112 
# Redirect NTP request in local NTP server
110 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
 113 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
111 
 
 114 
 
112 
#############################
 115 
#############################
113 
#         INPUT             #
 116 
#         INPUT             #
114 
#############################
 117 
#############################
115 
 
 118 
 
116 
# Tout passe sur loopback
 119 
# Tout passe sur loopback
117 
# accept all on loopback
 120 
# accept all on loopback
118 
$IPTABLES -A INPUT -i lo -j ACCEPT
 121 
$IPTABLES -A INPUT -i lo -j ACCEPT
119 
$IPTABLES -A OUTPUT -o lo -j ACCEPT
 122 
$IPTABLES -A OUTPUT -o lo -j ACCEPT
120 
 
 123 
 
121 
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
 124 
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
122 
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
 125 
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
123 
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
 126 
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
124 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
 127 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
125 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
 128 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
126 
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
 129 
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
127 
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
 130 
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
128 
 
 131 
 
129 
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
 132 
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
130 
# Drop broadcast & multicast on EXTIF to avoid log
133 
# Drop broadcast & multicast on EXTIF to avoid log
131 
$IPTABLES -A INPUT -i $EXTIF -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
 134 
$IPTABLES -A INPUT -i $EXTIF -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
132 
 
 135 
 
133 
# On autorise les retours de connexions légitimes par INPUT
 136 
# On autorise les retours de connexions légitimes par INPUT
134 
# Conntrack on INPUT
 137 
# Conntrack on INPUT
- 
 
 138 
#$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j NETFLOW
135 
$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
 139 
$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
136 
 
 140 
 
137 
# On interdit les connexions directes au port utilisé par DansGuardian (8080). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 141 
# On interdit les connexions directes au port utilisé par DansGuardian (8080). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
138 
# Deny direct connections on DansGuardian port (8080). The concerned paquets are marked in mangle table (PREROUTING)
 142 
# Deny direct connections on DansGuardian port (8080). The concerned paquets are marked in mangle table (PREROUTING)
139 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset
 143 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset
140 
 
 144 
 
141 
# Insertion des règles de blocage IP
 145 
# Insertion des règles de blocage IP
142 
# Here, we add IP block rules
146 
# Here, we add IP block rules
143 
if [ -s /usr/local/etc/alcasar-ip-blocked ]; then
147 
if [ -s /usr/local/etc/alcasar-ip-blocked ]; then
144 
	while read ip_line
 148 
	while read ip_line
145 
	do
 149 
	do
146 
		ip_on=`echo $ip_line|cut -b1`
 150 
		ip_on=`echo $ip_line|cut -b1`
147 
		if [ $ip_on != "#" ]
 151 
		if [ $ip_on != "#" ]
148 
		then
152 
		then
149 
			ip_blocked=`echo $ip_line|cut -d" " -f1`
 153 
			ip_blocked=`echo $ip_line|cut -d" " -f1`
150 
			$IPTABLES -A INPUT -i $TUNIF -d $ip_blocked -p tcp --dport 8080 -m state --state NEW --syn -j ULOG --ulog-prefix "RULE IP-blocked -- REJECT "
 154 
			$IPTABLES -A INPUT -i $TUNIF -d $ip_blocked -p tcp --dport 8080 -m state --state NEW --syn -j ULOG --ulog-prefix "RULE IP-blocked -- REJECT "
151 
			$IPTABLES -A INPUT -i $TUNIF -d $ip_blocked -p tcp --dport 8080 -m state --state NEW --syn -j REJECT
155 
			$IPTABLES -A INPUT -i $TUNIF -d $ip_blocked -p tcp --dport 8080 -m state --state NEW --syn -j REJECT
152 
		fi
 156 
		fi
153 
	done < /usr/local/etc/alcasar-ip-blocked
 157 
	done < /usr/local/etc/alcasar-ip-blocked
154 
fi
 158 
fi
155 
# Autorisation des connexions légitimes à DansGuardian
159 
# Autorisation des connexions légitimes à DansGuardian
156 
# Allow connections for DansGuardian
 160 
# Allow connections for DansGuardian
- 
 
 161 
#Flux netflow des requêtes HTTP à destination de DansGuardian
- 
 
 162 
#$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -j NETFLOW
157 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m state --state NEW --syn -j ACCEPT
 163 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m state --state NEW --syn -j ACCEPT
158 
 
 164 
 
159 
# On interdit les connexions directes au port UDP 54. Les packets concernés ont été marqués dans la table mangle (PREROUTING)
 165 
# On interdit les connexions directes au port UDP 54. Les packets concernés ont été marqués dans la table mangle (PREROUTING)
160 
# Deny direct connections on UDP 54. The concerned paquets are marked in mangle table (PREROUTING)
 166 
# Deny direct connections on UDP 54. The concerned paquets are marked in mangle table (PREROUTING)
161 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 2 -j REJECT --reject-with icmp-port-unreachable
 167 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 2 -j REJECT --reject-with icmp-port-unreachable
162 
 
 168 
 
163 
# autorisation des connexion légitime à DNSMASQ (avec blackhole)
 169 
# autorisation des connexion légitime à DNSMASQ (avec blackhole)
164 
# Allow connections for DNSMASQ (with blackhole)
 170 
# Allow connections for DNSMASQ (with blackhole)
165 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
 171 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
166 
 
 172 
 
167 
# Accès direct aux services internes
 173 
# Accès direct aux services internes
168 
# Internal services access
 174 
# Internal services access
169 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS non filtré # DNS without blackhole
 175 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS non filtré # DNS without blackhole
170 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
 176 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
171 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
 177 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
172 
$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
 178 
$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
173 
$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
 179 
$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
174 
$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
 180 
$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
175 
$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
 181 
$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
176 
 
 182 
 
177 
# SSHD rules if activate
183 
# SSHD rules if activate
178 
if [ $SSH = on ]
 184 
if [ $SSH = on ]
179 
	then
 185 
	then
180 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -m state --state NEW -j ULOG --ulog-nlgroup 2 --ulog-prefix "RULE ssh-from-LAN -- ACCEPT"
 186 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -m state --state NEW -j ULOG --ulog-nlgroup 2 --ulog-prefix "RULE ssh-from-LAN -- ACCEPT"
181 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -j ACCEPT
 187 
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -j ACCEPT
182 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW --syn -j ULOG --ulog-nlgroup 2 --ulog-prefix "RULE ssh-from-WAN -- ACCEPT"
 188 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW --syn -j ULOG --ulog-nlgroup 2 --ulog-prefix "RULE ssh-from-WAN -- ACCEPT"
183 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW,ESTABLISHED -j ACCEPT
 189 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW,ESTABLISHED -j ACCEPT
184 
fi
 190 
fi
185 
 
 191 
 
186 
# Insertion de règles locales
 192 
# Insertion de règles locales
187 
# Here, we add local rules (i.e. VPN from Internet)
 193 
# Here, we add local rules (i.e. VPN from Internet)
188 
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
 194 
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
189 
        . /usr/local/etc/alcasar-iptables-local.sh
 195 
        . /usr/local/etc/alcasar-iptables-local.sh
190 
fi
 196 
fi
191 
 
 197 
 
192 
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
 198 
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
193 
# Deny and log on INPUT from the LAN
 199 
# Deny and log on INPUT from the LAN
194 
$IPTABLES -A INPUT -i $TUNIF -m state --state NEW -j ULOG --ulog-prefix "RULE rej-int -- REJECT "
 200 
$IPTABLES -A INPUT -i $TUNIF -m state --state NEW -j ULOG --ulog-prefix "RULE rej-int -- REJECT "
195 
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
 201 
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
196 
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
 202 
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
197 
 
 203 
 
198 
# interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
 204 
# interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
199 
# Reject INTIF access (only when chilli is down)
 205 
# Reject INTIF access (only when chilli is down)
200 
$IPTABLES -A INPUT -i $INTIF -j ULOG --ulog-prefix "RULE Protect1 -- REJECT "
 206 
$IPTABLES -A INPUT -i $INTIF -j ULOG --ulog-prefix "RULE Protect1 -- REJECT "
201 
$IPTABLES -A INPUT -i $INTIF -j REJECT
 207 
$IPTABLES -A INPUT -i $INTIF -j REJECT
202 
 
 208 
 
203 
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
 209 
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
204 
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
 210 
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
205 
$IPTABLES -A INPUT -i $EXTIF -m state --state NEW -j ULOG --ulog-nlgroup 3 --ulog-qthreshold 10 --ulog-prefix "RULE rej-ext -- DROP"
 211 
$IPTABLES -A INPUT -i $EXTIF -m state --state NEW -j ULOG --ulog-nlgroup 3 --ulog-qthreshold 10 --ulog-prefix "RULE rej-ext -- DROP"
206 
 
 212 
 
207 
 
 213 
 
208 
#############################
 214 
#############################
209 
#        FORWARD            #
 215 
#        FORWARD            #
210 
#############################
 216 
#############################
211 
 
 217 
 
212 
# Rejet des requêtes DNS vers Internet
 218 
# Rejet des requêtes DNS vers Internet
213 
# Deny forward DNS
 219 
# Deny forward DNS
214 
$IPTABLES -A FORWARD -i $TUNIF -p udp --dport domain -j REJECT --reject-with icmp-port-unreachable
 220 
$IPTABLES -A FORWARD -i $TUNIF -p udp --dport domain -j REJECT --reject-with icmp-port-unreachable
215 
$IPTABLES -A FORWARD -i $TUNIF -p tcp --dport domain -j REJECT --reject-with tcp-reset
 221 
$IPTABLES -A FORWARD -i $TUNIF -p tcp --dport domain -j REJECT --reject-with tcp-reset
216 
 
 222 
 
217 
# Insertion des règles de blocage IP
 223 
# Insertion des règles de blocage IP
218 
# Here, we add local IP block rules
224 
# Here, we add local IP block rules
219 
if [ -s /usr/local/etc/alcasar-ip-blocked ]; then
225 
if [ -s /usr/local/etc/alcasar-ip-blocked ]; then
220 
	while read ip_line
 226 
	while read ip_line
221 
	do
 227 
	do
222 
		ip_on=`echo $ip_line|cut -b1`
 228 
		ip_on=`echo $ip_line|cut -b1`
223 
		if [ $ip_on != "#" ]
 229 
		if [ $ip_on != "#" ]
224 
		then
230 
		then
225 
			ip_blocked=`echo $ip_line|cut -d" " -f1`
 231 
			ip_blocked=`echo $ip_line|cut -d" " -f1`
226 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -j ULOG --ulog-prefix "RULE IP-blocked -- REJECT "
 232 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -j ULOG --ulog-prefix "RULE IP-blocked -- REJECT "
227 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p udp -j REJECT --reject-with icmp-port-unreachable
 233 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p udp -j REJECT --reject-with icmp-port-unreachable
228 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p icmp -j REJECT --reject-with icmp-port-unreachable
 234 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p icmp -j REJECT --reject-with icmp-port-unreachable
229 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p tcp -j REJECT --reject-with tcp-reset
 235 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p tcp -j REJECT --reject-with tcp-reset
230 
		fi
 236 
		fi
231 
	done < /usr/local/etc/alcasar-ip-blocked
 237 
	done < /usr/local/etc/alcasar-ip-blocked
232 
fi
 238 
fi
233 
 
 239 
 
234 
# Si le filtrage de domain est activé, blocage des IP de la BL
240 
# Si le filtrage de domain est activé, blocage des IP de la BL
235 
# If DNS filter is on, reject IP of BL
 241 
# If DNS filter is on, reject IP of BL
236 
# Comment : loading time is too long and iptables should become oveloaded !!!
 242 
# Comment : loading time is too long and iptables should become oveloaded !!!
237 
#if [ $DNS_FILTERING = on ]; then
 243 
#if [ $DNS_FILTERING = on ]; then
238 
#	cd $BL_IP_CAT
 244 
#	cd $BL_IP_CAT
239 
#	for category in `ls -1 | cut -d"@" -f1`
 245 
#	for category in `ls -1 | cut -d"@" -f1`
240 
#	do
 246 
#	do
241 
#		while read ip_blocked
 247 
#		while read ip_blocked
242 
#		do
 248 
#		do
243 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -j ULOG --ulog-prefix "RULE IP-blocked -- REJECT "
 249 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -j ULOG --ulog-prefix "RULE IP-blocked -- REJECT "
244 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p udp -j REJECT --reject-with icmp-port-unreachable
 250 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p udp -j REJECT --reject-with icmp-port-unreachable
245 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p icmp -j REJECT --reject-with icmp-port-unreachable
 251 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p icmp -j REJECT --reject-with icmp-port-unreachable
246 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p tcp -j REJECT --reject-with tcp-reset
 252 
#			$IPTABLES -A FORWARD -i $TUNIF -d $ip_blocked -p tcp -j REJECT --reject-with tcp-reset
247 
#		done < $BL_IP_CAT/$category
 253 
#		done < $BL_IP_CAT/$category
248 
#	done
 254 
#	done
249 
#fi
 255 
#fi
250 
 
 256 
 
251 
# Autorisation des retours de connexions légitimes
 257 
# Autorisation des retours de connexions légitimes
252 
# Allow conntrack
 - 
 
253 
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
 258 
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
254 
 
 259 
 
255 
#  If protocols filter is activate
260 
#  If protocols filter is activate
256 
if [ $PROTOCOLS_FILTERING = on ]; then
 261 
if [ $PROTOCOLS_FILTERING = on ]; then
257 
	# Compute exception IP (IP addresses that shouldn't be filtered)
 262 
	# Compute exception IP (IP addresses that shouldn't be filtered)
258 
	nb_exceptions=`wc -l /usr/local/etc/alcasar-filter-exceptions | cut -d" " -f1`
 263 
	nb_exceptions=`wc -l /usr/local/etc/alcasar-filter-exceptions | cut -d" " -f1`
259 
	if [ $nb_exceptions != "0" ]
 264 
	if [ $nb_exceptions != "0" ]
260 
	then
 265 
	then
261 
		while read ip_exception
266 
		while read ip_exception
262 
		do
 267 
		do
263 
			$IPTABLES -A FORWARD -i $TUNIF -s $ip_exception -m state --state NEW -j ULOG --ulog-prefix "RULE IP-exception -- ACCEPT "
 268 
			$IPTABLES -A FORWARD -i $TUNIF -s $ip_exception -m state --state NEW -j ULOG --ulog-prefix "RULE IP-exception -- ACCEPT "
- 
 
 269 
			$IPTABLES -A FORWARD -i $TUNIF -s $ip_exception -m state --state NEW -j NETFLOW
264 
			$IPTABLES -A FORWARD -i $TUNIF -s $ip_exception -m state --state NEW -j ACCEPT
 270 
			$IPTABLES -A FORWARD -i $TUNIF -s $ip_exception -m state --state NEW -j ACCEPT
265 
		done < /usr/local/etc/alcasar-filter-exceptions
 271 
		done < /usr/local/etc/alcasar-filter-exceptions
266 
	fi
 272 
	fi
267 
	# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...)
273 
	# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...)
268 
	nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
 274 
	nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
269 
	if [ $nb_uamallowed != "0" ]
 275 
	if [ $nb_uamallowed != "0" ]
270 
	then
 276 
	then
271 
		while read ip_allowed_line
277 
		while read ip_allowed_line
272 
		do
 278 
		do
273 
			ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
 279 
			ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
274 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ULOG --ulog-prefix "RULE IP-allowed -- ACCEPT "
 280 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ULOG --ulog-prefix "RULE IP-allowed -- ACCEPT "
- 
 
 281 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NETFLOW
275 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
 282 
			$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
276 
		done < /usr/local/etc/alcasar-uamallowed
 283 
		done < /usr/local/etc/alcasar-uamallowed
277 
	fi
 284 
	fi
278 
	# Autorisation des protocoles non commentés
 285 
	# Autorisation des protocoles non commentés
279 
	# Allow non comment protocols
 286 
	# Allow non comment protocols
280 
	while read svc_line
 287 
	while read svc_line
281 
	do
 288 
	do
282 
		svc_on=`echo $svc_line|cut -b1`
 289 
		svc_on=`echo $svc_line|cut -b1`
283 
		if [ $svc_on != "#" ]
 290 
		if [ $svc_on != "#" ]
284 
		then
291 
		then
285 
			svc_name=`echo $svc_line|cut -d" " -f1`
 292 
			svc_name=`echo $svc_line|cut -d" " -f1`
286 
			svc_port=`echo $svc_line|cut -d" " -f2`
 293 
			svc_port=`echo $svc_line|cut -d" " -f2`
287 
			if [ $svc_name = "icmp" ]
 294 
			if [ $svc_name = "icmp" ]
288 
			then
 295 
			then
- 
 
 296 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p icmp -j NETFLOW
289 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p icmp -j ACCEPT
297 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p icmp -j ACCEPT
290 
			else
 298 
			else
- 
 
 299 
 
291 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j ULOG --ulog-prefix "RULE F_TCP-$svc_name -- ACCEPT "
 300 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j ULOG --ulog-prefix "RULE F_TCP-$svc_name -- ACCEPT "
- 
 
 301 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j NETFLOW
292 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j ACCEPT
 302 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j ACCEPT
293 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j ULOG --ulog-prefix "RULE F_UDP-$svc_name -- ACCEPT "
 303 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j ULOG --ulog-prefix "RULE F_UDP-$svc_name -- ACCEPT "
- 
 
 304 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j NETFLOW
294 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j ACCEPT
 305 
				$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j ACCEPT
295 
			fi
 306 
			fi
296 
		fi
 307 
		fi
297 
	done < /usr/local/etc/alcasar-services
 308 
	done < /usr/local/etc/alcasar-services
298 
	# Rejet explicite des autres protocoles
 309 
	# Rejet explicite des autres protocoles
299 
	# reject the others protocols
 310 
	# reject the others protocols
300 
	$IPTABLES -A FORWARD -i $TUNIF -j ULOG --ulog-prefix "RULE F_filter -- REJECT "
 311 
	$IPTABLES -A FORWARD -i $TUNIF -j ULOG --ulog-prefix "RULE F_filter -- REJECT "
301 
	$IPTABLES -A FORWARD -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
 312 
	$IPTABLES -A FORWARD -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
302 
	$IPTABLES -A FORWARD -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
 313 
	$IPTABLES -A FORWARD -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
303 
	$IPTABLES -A FORWARD -i $TUNIF -p icmp -j REJECT
314 
	$IPTABLES -A FORWARD -i $TUNIF -p icmp -j REJECT
304 
fi
 315 
fi
305 
 
 316 
 
306 
#  If QOS is activate  #
 317 
#  If QOS is activate  #
307 
if [ $QOS = on ] && [ -e /usr/local/etc/alcasar-iptables-qos.sh ]; then
 318 
if [ $QOS = on ] && [ -e /usr/local/etc/alcasar-iptables-qos.sh ]; then
308 
	. /usr/local/etc/alcasar-iptables-qos.sh
319 
	. /usr/local/etc/alcasar-iptables-qos.sh
309 
fi
 320 
fi
310 
 
 321 
 
311 
# Autorisation des connections sortant du LAN
322 
# Autorisation des connections sortant du LAN
312 
# Allow forward connections with log
 323 
# Allow forward connections with log
313 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ULOG --ulog-prefix "RULE F_all -- ACCEPT "
 324 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ULOG --ulog-prefix "RULE F_all -- ACCEPT "
- 
 
 325 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j NETFLOW
314 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ACCEPT
 326 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ACCEPT
315 
 
 327 
 
316 
#############################
 328 
#############################
317 
#         OUTPUT            #
 329 
#         OUTPUT            #
318 
#############################
 330 
#############################
319 
 
 - 
 
320 
# On autorise les retours de connexions légitimes par OUTPUT
 331 
# SSHD rules if activate
321 
# Conntrack on OUTPUT
 332 
if [ $SSH = on ]
- 
 
 333 
	then
322 
$IPTABLES -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
 334 
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --sport ssh -m state --state ESTABLISHED -j ACCEPT
323 
 
 335 
fi
324 
# On laisse tout sortir sur INTIF
 336 
# On laisse tout sortir sur toutes les cartes sauf celle qui est connectée sur l'extérieur
325 
# Everything is allowed only on INTIF
 337 
# Everything is allowed but traffic through outside network interface
326 
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
 338 
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
327 
 
 339 
 
328 
# On autorise les requêtes DNS vers les serveurs DNS identifiés
340 
# On autorise les requêtes DNS vers les serveurs DNS identifiés
329 
# Allow DNS requests to identified DNS servers
 341 
# Allow DNS requests to identified DNS servers
330 
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m state --state NEW -j ACCEPT
 342 
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m state --state NEW -j ACCEPT
331 
 
 343 
 
332 
# On autorise les requêtes HTTP sortantes
 344 
# On autorise les requêtes HTTP sortantes
333 
# HTTP requests are allowed
 345 
# HTTP requests are allowed
- 
 
 346 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
334 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
 347 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
335 
 
 348 
 
336 
# On autorise les requêtes FTP
349 
# On autorise les requêtes FTP
337 
# FTP requests are allowed
 350 
# FTP requests are allowed
338 
modprobe ip_conntrack_ftp
 351 
modprobe ip_conntrack_ftp
339 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
 352 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
- 
 
 353 
$IPTABLES -A OUTPUT -o $EXTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
340 
 
 354 
 
341 
# On autorise les requêtes NTP
355 
# On autorise les requêtes NTP
342 
# NTP requests are allowed
 356 
# NTP requests are allowed
343 
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
 357 
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
344 
 
 358 
 
345 
# On autorise les requêtes ICMP (ping)
359 
# On autorise les requêtes ICMP (ping)
346 
# ICMP (ping) requests are allowed
 360 
# ICMP (ping) requests are allowed
347 
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
 361 
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
348 
 
 362 
 
349 
# On autorise les requêtes LDAP si un serveur externe est configué
 363 
# On autorise les requêtes LDAP si un serveur externe est configué
350 
# LDAP requests are allowed if an external server is declared
 364 
# LDAP requests are allowed if an external server is declared
351 
if [ $LDAP = on ]
 365 
if [ $LDAP = on ]
352 
	then
 366 
	then
353 
	$IPTABLES -A OUTPUT -p tcp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
 367 
	$IPTABLES -A OUTPUT -p tcp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
354 
	$IPTABLES -A OUTPUT -p udp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
 368 
	$IPTABLES -A OUTPUT -p udp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
355 
#	$IPTABLES -A INPUT  -p tcp -s $LDAP_IP -m multiports --sports ldap,ldaps -m state --state ESTABLISHED -j ACCEPT
 369 
#	$IPTABLES -A INPUT  -p tcp -s $LDAP_IP -m multiports --sports ldap,ldaps -m state --state ESTABLISHED -j ACCEPT
356 
#	$IPTABLES -A INPUT  -p udp -s $LDAP_IP -m multiports --sports ldap,ldaps -m state --state ESTABLISHED -j ACCEPT
 370 
#	$IPTABLES -A INPUT  -p udp -s $LDAP_IP -m multiports --sports ldap,ldaps -m state --state ESTABLISHED -j ACCEPT
357 
fi
 371 
fi
358 
 
 372 
 
- 
 
 373 
 
359 
#############################
 374 
#############################
360 
#       POSTROUTING         #
 375 
#       POSTROUTING         #
361 
#############################
 376 
#############################
362 
# Traduction dynamique d'adresse en sortie
 377 
# Traduction dynamique d'adresse en sortie
363 
# Dynamic NAT on EXTIF
 378 
# Dynamic NAT on EXTIF
364 
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
 379 
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
365 
 
 380 
 
366 
# Save all rules
 381 
# Save all rules
367 
/etc/init.d/iptables save
 382 
/etc/init.d/iptables save
368 
 
 383 
 
369 
# End of script
 384 
# End of script
370 
 
 385 
 
371 
 
 386