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#!/bin/bash
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#!/bin/bash
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# $Id: alcasar-iptables.sh 3193 2024-04-21 22:33:19Z rexy $
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# $Id: alcasar-iptables.sh 3195 2024-04-23 22:39:48Z rexy $
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# Script de mise en place des regles du parefeu d'Alcasar (mode normal)
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# Script de mise en place des regles du parefeu d'Alcasar (mode normal)
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# This script writes the netfilter rules for ALCASAR
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# This script writes the netfilter rules for ALCASAR
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# Rexy - 3abtux - CPN
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# Rexy - 3abtux - CPN
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#
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#
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# Reminders
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# Reminders
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# There are four channels for log :
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# There are four channels for log :
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#	1 tracability of the consultation equipment with The 'Netflow' kernel module (iptables target = NETFLOW);
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#	1 tracability of the consultation equipment with The 'Netflow' kernel module (iptables target = NETFLOW);
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#	2 protection of ALCASAR with the Ulog group 1 (default group)
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#	2 protection of ALCASAR with the Ulog group 1 (default group)
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#	3 SSH on ALCASAR with the Ulog group 2;
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#	3 SSH on ALCASAR with the Ulog group 2;
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#	4 extern access attempts on ALCASAR with the Ulog group 3.
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#	4 extern access attempts on ALCASAR with the Ulog group 3.
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# The bootps/dhcp (67) port is always open on tun0/INTIF by coova
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# The bootps/dhcp (67) port is always open on tun0/INTIF by coova
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CONF_FILE="/usr/local/etc/alcasar.conf"
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CONF_FILE="/usr/local/etc/alcasar.conf"
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EXTIF=`grep ^EXTIF= $CONF_FILE|cut -d"=" -f2`				# EXTernal InterFace
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EXTIF=`grep ^EXTIF= $CONF_FILE|cut -d"=" -f2`				# EXTernal InterFace
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INTIF=`grep ^INTIF= $CONF_FILE|cut -d"=" -f2`				# INTernal InterFace
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INTIF=`grep ^INTIF= $CONF_FILE|cut -d"=" -f2`				# INTernal InterFace
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TUNIF="tun0"								# listen device for chilli daemon
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TUNIF="tun0"								# listen device for chilli daemon
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private_ip_mask=`grep ^PRIVATE_IP= $CONF_FILE|cut -d"=" -f2`
18
private_ip_mask=`grep ^PRIVATE_IP= $CONF_FILE|cut -d"=" -f2`
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private_ip_mask=${private_ip_mask:=192.168.182.1/24}
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private_ip_mask=${private_ip_mask:=192.168.182.1/24}
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PRIVATE_IP=`echo $private_ip_mask | cut -d"/" -f1`			# ALCASAR LAN IP address
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PRIVATE_IP=`echo $private_ip_mask | cut -d"/" -f1`			# ALCASAR LAN IP address
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private_network=`/bin/ipcalc -n $private_ip_mask|cut -d"=" -f2`		# LAN IP address (ie.: 192.168.182.0)
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private_network=`/bin/ipcalc -n $private_ip_mask|cut -d"=" -f2`		# LAN IP address (ie.: 192.168.182.0)
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private_prefix=`/bin/ipcalc -p $private_ip_mask|cut -d"=" -f2`		# LAN prefix (ie. 24)
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private_prefix=`/bin/ipcalc -p $private_ip_mask|cut -d"=" -f2`		# LAN prefix (ie. 24)
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PRIVATE_NETWORK_MASK=$private_network/$private_prefix			# LAN IP address + prefix (192.168.182.0/24)
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PRIVATE_NETWORK_MASK=$private_network/$private_prefix			# LAN IP address + prefix (192.168.182.0/24)
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public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
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public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
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dhcp_on_extif="off"
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dhcp_on_extif="off"
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if [[ "$public_ip_mask" == "dhcp" ]]
26
if [[ "$public_ip_mask" == "dhcp" ]]
27
then
27
then
28
	dhcp_on_extif="on"
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	dhcp_on_extif="on"
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	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"
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	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"
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	public_ip_mask=`ip addr show $EXTIF | grep -o -E $PTN`
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	public_ip_mask=`ip addr show $EXTIF | grep -o -E $PTN`
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fi
31
fi
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PUBLIC_IP=`echo $public_ip_mask | cut -d"/" -f1`
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PUBLIC_IP=`echo $public_ip_mask | cut -d"/" -f1`
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dns1=`grep ^DNS1= $CONF_FILE|cut -d"=" -f2`
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dns1=`grep ^DNS1= $CONF_FILE|cut -d"=" -f2`
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dns2=`grep ^DNS2= $CONF_FILE|cut -d"=" -f2`
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dns2=`grep ^DNS2= $CONF_FILE|cut -d"=" -f2`
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dns1=${dns1:=208.67.220.220}
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dns1=${dns1:=208.67.220.220}
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dns2=${dns2:=208.67.222.222}
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dns2=${dns2:=208.67.222.222}
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DNSSERVERS="$dns1,$dns2"						# first and second public DNS servers
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DNSSERVERS="$dns1,$dns2"						# first and second public DNS servers
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INT_DNS_IP=`grep INT_DNS_IP $CONF_FILE|cut -d"=" -f2`			# Adresse du serveur DNS interne
38
INT_DNS_IP=`grep INT_DNS_IP $CONF_FILE|cut -d"=" -f2`			# Adresse du serveur DNS interne
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INT_DNS_ACTIVE=`grep INT_DNS_ACTIVE $CONF_FILE|cut -d"=" -f2`	# Activation de la redirection DNS interne
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INT_DNS_ACTIVE=`grep INT_DNS_ACTIVE $CONF_FILE|cut -d"=" -f2`	# Activation de la redirection DNS interne
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BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
40
BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
41
WL_IP_CAT="/usr/local/share/iptables-wl-enabled"			# categories files of the WhiteListed IP
41
WL_IP_CAT="/usr/local/share/iptables-wl-enabled"			# categories files of the WhiteListed IP
42
TMP_users_set_save="/tmp/users_set_save"				# tmp file for backup users set
42
TMP_users_set_save="/tmp/users_set_save"				# tmp file for backup users set
43
TMP_set_save="/tmp/ipset_save"						# tmp file for blacklist and whitelist creation
43
TMP_set_save="/tmp/ipset_save"						# tmp file for blacklist and whitelist creation
44
TMP_ip_gw_save="/tmp/ipset_ip_gw_save"				# tmp file for already connected ips
44
TMP_ip_gw_save="/tmp/ipset_ip_gw_save"				# tmp file for already connected ips
45
SSH_LAN=`grep ^SSH_LAN= $CONF_FILE|cut -d"=" -f2`			# SSH LAN port
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SSH_LAN=`grep ^SSH_LAN= $CONF_FILE|cut -d"=" -f2`			# SSH LAN port
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SSH_LAN=${SSH_LAN:=0}
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SSH_LAN=${SSH_LAN:=0}
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SSH_WAN=`grep ^SSH_WAN= $CONF_FILE|cut -d"=" -f2`		# SSH WAN port
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SSH_WAN=`grep ^SSH_WAN= $CONF_FILE|cut -d"=" -f2`		# SSH WAN port
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SSH_WAN=${SSH_WAN:=0}
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SSH_WAN=${SSH_WAN:=0}
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SSH_WAN_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2|cut -d"/" -f2`
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SSH_WAN_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2|cut -d"/" -f2`
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SSH_WAN_ADMIN_FROM=${SSH_WAN_ADMIN_FROM:="0.0.0.0"}
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SSH_WAN_ADMIN_FROM=${SSH_WAN_ADMIN_FROM:="0.0.0.0"}
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SSH_WAN_ADMIN_FROM=$([ "$SSH_WAN_ADMIN_FROM" == "0.0.0.0" ] && echo "0.0.0.0/0" || echo "$SSH_WAN_ADMIN_FROM" )
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SSH_WAN_ADMIN_FROM=$([ "$SSH_WAN_ADMIN_FROM" == "0.0.0.0" ] && echo "0.0.0.0/0" || echo "$SSH_WAN_ADMIN_FROM" )
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SSH_LAN_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2|cut -d"/" -f1`
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SSH_LAN_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2|cut -d"/" -f1`
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SSH_LAN_ADMIN_FROM=${SSH_LAN_ADMIN_FROM:="0.0.0.0"}
53
SSH_LAN_ADMIN_FROM=${SSH_LAN_ADMIN_FROM:="0.0.0.0"}
54
SSH_LAN_ADMIN_FROM=$([ "$SSH_LAN_ADMIN_FROM" == "0.0.0.0" ] && echo "$PRIVATE_NETWORK_MASK" || echo "$SSH_LAN_ADMIN_FROM" )
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SSH_LAN_ADMIN_FROM=$([ "$SSH_LAN_ADMIN_FROM" == "0.0.0.0" ] && echo "$PRIVATE_NETWORK_MASK" || echo "$SSH_LAN_ADMIN_FROM" )
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IPTABLES="/sbin/iptables"
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IPTABLES="/sbin/iptables"
56
REHABILITED_IP="/etc/e2guardian/lists/group1/exceptioniplist"
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REHABILITED_IP="/etc/e2guardian/lists/common/exceptioniplist"
57
ALLOWED_SITES="/usr/local/etc/alcasar-site-direct"			# WEB Sites allowed for all (no av and no filtering for av_bl users)
57
ALLOWED_SITES="/usr/local/etc/alcasar-site-direct"			# WEB Sites allowed for all (no av and no filtering for av_bl users)
58
MULTIWAN=`grep ^MULTIWAN $CONF_FILE|cut -d"=" -f2`
58
MULTIWAN=`grep ^MULTIWAN $CONF_FILE|cut -d"=" -f2`
59
PROXY=`grep ^PROXY= $CONF_FILE|cut -d"=" -f2`
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PROXY=`grep ^PROXY= $CONF_FILE|cut -d"=" -f2`
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PROXY_IP=`grep ^PROXY_IP= $CONF_FILE|cut -d"=" -f2`
60
PROXY_IP=`grep ^PROXY_IP= $CONF_FILE|cut -d"=" -f2`
61
nb_gw=`grep ^WAN $CONF_FILE|wc -l`
61
nb_gw=`grep ^WAN $CONF_FILE|wc -l`
62
interlan=`grep ^INTERLAN= $CONF_FILE|cut -d"=" -f2`
62
interlan=`grep ^INTERLAN= $CONF_FILE|cut -d"=" -f2`
63
interlan=${interlan:=off}
63
interlan=${interlan:=off}
64
 
64
 
65
# Allow requests to internal DNS if activated
65
# Allow requests to internal DNS if activated
66
if [ "$INT_DNS_ACTIVE" = "on" ]
66
if [ "$INT_DNS_ACTIVE" = "on" ]
67
then
67
then
68
	DNSSERVERS="$DNSSERVERS,$INT_DNS_IP"
68
	DNSSERVERS="$DNSSERVERS,$INT_DNS_IP"
69
fi
69
fi
70
 
70
 
71
#ipset name list for load_balancing
71
#ipset name list for load_balancing
72
gw_list="gw0"
72
gw_list="gw0"
73
if [ "$MULTIWAN" == "on" ] || [ "$MULTIWAN" == "On" ]; then
73
if [ "$MULTIWAN" == "on" ] || [ "$MULTIWAN" == "On" ]; then
74
	for ((i=1 ; i<=$nb_gw ; i++)); do
74
	for ((i=1 ; i<=$nb_gw ; i++)); do
75
		gw_list="${gw_list} gw$i"
75
		gw_list="${gw_list} gw$i"
76
	done
76
	done
77
fi
77
fi
78
 
78
 
79
# Sauvegarde des SET des utilisateurs connectés si ils existent
79
# Sauvegarde des SET des utilisateurs connectés si ils existent
80
# Saving SET of connected users if it exists
80
# Saving SET of connected users if it exists
81
ipset list not_filtered 1>/dev/null 2>&1
81
ipset list not_filtered 1>/dev/null 2>&1
82
if [ $? -eq 0 ];
82
if [ $? -eq 0 ];
83
then
83
then
84
	ipset save not_filtered > $TMP_users_set_save
84
	ipset save not_filtered > $TMP_users_set_save
85
	ipset save av >> $TMP_users_set_save
85
	ipset save av >> $TMP_users_set_save
86
	ipset save av_bl >> $TMP_users_set_save
86
	ipset save av_bl >> $TMP_users_set_save
87
	ipset save av_wl >> $TMP_users_set_save
87
	ipset save av_wl >> $TMP_users_set_save
88
	ipset save proto_0 >> $TMP_users_set_save
88
	ipset save proto_0 >> $TMP_users_set_save
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	ipset save proto_1 >> $TMP_users_set_save
89
	ipset save proto_1 >> $TMP_users_set_save
90
	ipset save proto_2 >> $TMP_users_set_save
90
	ipset save proto_2 >> $TMP_users_set_save
91
	ipset save proto_3 >> $TMP_users_set_save
91
	ipset save proto_3 >> $TMP_users_set_save
92
fi
92
fi
93
 
93
 
94
# Sauvegarde de la liste de toutes les IP déjà connectées pour les réintégrer dans le load balancing
94
# Sauvegarde de la liste de toutes les IP déjà connectées pour les réintégrer dans le load balancing
95
# Saving all of the already connected IP in order to put them back in the load balancing after
95
# Saving all of the already connected IP in order to put them back in the load balancing after
96
if [ ! -f $TMP_ip_gw_save ];then
96
if [ ! -f $TMP_ip_gw_save ];then
97
	# Save only if alcasar-network.sh --save has not been executed before
97
	# Save only if alcasar-network.sh --save has not been executed before
98
	for i in $gw_list;do
98
	for i in $gw_list;do
99
		ipset list $i 1>/dev/null 2>&1
99
		ipset list $i 1>/dev/null 2>&1
100
		if [ $? -eq 0 ]
100
		if [ $? -eq 0 ]
101
		then
101
		then
102
			# the cut -d":" -f5 deletes all the lines with a :, i.e all the lines execpt the members
102
			# the cut -d":" -f5 deletes all the lines with a :, i.e all the lines execpt the members
103
			ipset list $i | cut -d":" -f5 | sed '/^[[:space:]]*$/d' >> $TMP_ip_gw_save
103
			ipset list $i | cut -d":" -f5 | sed '/^[[:space:]]*$/d' >> $TMP_ip_gw_save
104
		fi
104
		fi
105
	done
105
	done
106
fi
106
fi
107
 
107
 
108
# Chargement de la sonde NetFlow (module noyau ipt_NETFLOW)
108
# Chargement de la sonde NetFlow (module noyau ipt_NETFLOW)
109
# loading of NetFlow probe (ipt_NETFLOW kernel module)
109
# loading of NetFlow probe (ipt_NETFLOW kernel module)
110
modprobe ipt_NETFLOW destination=127.0.0.1:2055
110
modprobe ipt_NETFLOW destination=127.0.0.1:2055
111
 
111
 
112
# Effacement des règles existantes
112
# Effacement des règles existantes
113
# Flush all existing rules
113
# Flush all existing rules
114
$IPTABLES -F
114
$IPTABLES -F
115
$IPTABLES -t nat -F
115
$IPTABLES -t nat -F
116
$IPTABLES -t mangle -F
116
$IPTABLES -t mangle -F
117
$IPTABLES -F INPUT
117
$IPTABLES -F INPUT
118
$IPTABLES -F FORWARD
118
$IPTABLES -F FORWARD
119
$IPTABLES -F OUTPUT
119
$IPTABLES -F OUTPUT
120
 
120
 
121
# Suppression des chaines utilisateurs sur les tables filter et nat
121
# Suppression des chaines utilisateurs sur les tables filter et nat
122
# Flush non default rules on filter and nat tables
122
# Flush non default rules on filter and nat tables
123
$IPTABLES -X
123
$IPTABLES -X
124
$IPTABLES -t nat -X
124
$IPTABLES -t nat -X
125
 
125
 
126
# Stratégies par défaut
126
# Stratégies par défaut
127
# Default policies
127
# Default policies
128
$IPTABLES -P INPUT DROP
128
$IPTABLES -P INPUT DROP
129
$IPTABLES -P FORWARD DROP
129
$IPTABLES -P FORWARD DROP
130
$IPTABLES -P OUTPUT DROP
130
$IPTABLES -P OUTPUT DROP
131
$IPTABLES -t nat -P PREROUTING ACCEPT
131
$IPTABLES -t nat -P PREROUTING ACCEPT
132
$IPTABLES -t nat -P POSTROUTING ACCEPT
132
$IPTABLES -t nat -P POSTROUTING ACCEPT
133
$IPTABLES -t nat -P OUTPUT ACCEPT
133
$IPTABLES -t nat -P OUTPUT ACCEPT
134
 
134
 
135
#############################
135
#############################
136
#          IPSET            #
136
#          IPSET            #
137
#############################
137
#############################
138
# destruction de tous les SET
138
# destruction de tous les SET
139
# destroy all SET
139
# destroy all SET
140
ipset flush
140
ipset flush
141
ipset destroy
141
ipset destroy
142
 
142
 
143
###### BL set  ###########
143
###### BL set  ###########
144
# Calcul de la taille / Compute the length
144
# Calcul de la taille / Compute the length
145
bl_set_length=$(wc -l $BL_IP_CAT/* | awk '{print $1}' | tail -n 1)
145
bl_set_length=$(wc -l $BL_IP_CAT/* | awk '{print $1}' | tail -n 1)
146
# Chargement / loading
146
# Chargement / loading
147
echo "create bl_ip_blocked hash:net family inet hashsize 1024 maxelem $bl_set_length" > $TMP_set_save
147
echo "create bl_ip_blocked hash:net family inet hashsize 1024 maxelem $bl_set_length" > $TMP_set_save
148
for category in `ls -1 $BL_IP_CAT | cut -d '@' -f1`
148
for category in `ls -1 $BL_IP_CAT | cut -d '@' -f1`
149
do
149
do
150
	cat $BL_IP_CAT/$category >> $TMP_set_save
150
	cat $BL_IP_CAT/$category >> $TMP_set_save
151
done
151
done
152
ipset -! restore < $TMP_set_save
152
ipset -! restore < $TMP_set_save
153
rm -f $TMP_set_save
153
rm -f $TMP_set_save
154
# Suppression des ip réhabilitées / Removing of rehabilitated ip
154
# Suppression des ip réhabilitées / Removing of rehabilitated ip
155
for ip in $(cat $REHABILITED_IP)
155
for ip in $(cat $REHABILITED_IP)
156
do
156
do
157
	ipset -q del bl_ip_blocked $ip
157
	ipset -q del bl_ip_blocked $ip
158
done
158
done
159
 
159
 
160
# ipset for exception web sites (usefull for filtered users = av_bl)
160
# ipset for exception web sites (usefull for filtered users = av_bl)
161
ipset create site_direct hash:net hashsize 1024
161
ipset create site_direct hash:net hashsize 1024
162
for site in $(cat $ALLOWED_SITES)
162
for site in $(cat $ALLOWED_SITES)
163
do
163
do
164
    ipset add site_direct $site
164
    ipset add site_direct $site
165
done
165
done
166
 
166
 
167
###### WL set  ###########
167
###### WL set  ###########
168
# taille fixe, car peuplé par unbound / fixe length due to unbound dynamic loading
168
# taille fixe, car peuplé par unbound / fixe length due to unbound dynamic loading
169
wl_set_length=65536
169
wl_set_length=65536
170
# Chargement Loading
170
# Chargement Loading
171
echo "create wl_ip_allowed hash:net family inet hashsize 1024 maxelem $wl_set_length" > $TMP_set_save
171
echo "create wl_ip_allowed hash:net family inet hashsize 1024 maxelem $wl_set_length" > $TMP_set_save
172
#get ip-wl files from ACC
172
#get ip-wl files from ACC
173
for category in `ls -1 $WL_IP_CAT |cut -d '@' -f1`
173
for category in `ls -1 $WL_IP_CAT |cut -d '@' -f1`
174
do
174
do
175
	cat $WL_IP_CAT/$category >> $TMP_set_save
175
	cat $WL_IP_CAT/$category >> $TMP_set_save
176
done
176
done
177
ipset -! restore < $TMP_set_save
177
ipset -! restore < $TMP_set_save
178
rm -f $TMP_set_save
178
rm -f $TMP_set_save
179
 
179
 
180
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET
180
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET
181
# Restoring the connected users SETs if available, otherwise creating SETs
181
# Restoring the connected users SETs if available, otherwise creating SETs
182
if [ -e $TMP_users_set_save ];
182
if [ -e $TMP_users_set_save ];
183
then
183
then
184
	ipset -! restore < $TMP_users_set_save
184
	ipset -! restore < $TMP_users_set_save
185
	rm -f $TMP_users_set_save
185
	rm -f $TMP_users_set_save
186
else
186
else
187
	ipset create not_filtered hash:ip hashsize 1024
187
	ipset create not_filtered hash:ip hashsize 1024
188
	ipset create av hash:ip hashsize 1024
188
	ipset create av hash:ip hashsize 1024
189
	ipset create av_bl hash:ip hashsize 1024
189
	ipset create av_bl hash:ip hashsize 1024
190
	ipset create av_wl hash:ip hashsize 1024
190
	ipset create av_wl hash:ip hashsize 1024
191
	# pour les filtrages de protocole par utilisateur / For network protocols filtering by user
191
	# pour les filtrages de protocole par utilisateur / For network protocols filtering by user
192
	ipset create proto_0 hash:ip hashsize 1024
192
	ipset create proto_0 hash:ip hashsize 1024
193
	ipset create proto_1 hash:ip hashsize 1024
193
	ipset create proto_1 hash:ip hashsize 1024
194
	ipset create proto_2 hash:ip hashsize 1024
194
	ipset create proto_2 hash:ip hashsize 1024
195
	ipset create proto_3 hash:ip hashsize 1024
195
	ipset create proto_3 hash:ip hashsize 1024
196
fi
196
fi
197
 
197
 
198
#ipsets for load balancing
198
#ipsets for load balancing
199
for i in $gw_list; do
199
for i in $gw_list; do
200
	ipset create $i hash:ip
200
	ipset create $i hash:ip
201
done
201
done
202
cat $TMP_ip_gw_save | while read ip; do
202
cat $TMP_ip_gw_save | while read ip; do
203
	gw_min="gw0"
203
	gw_min="gw0"
204
	weight=`grep ^PUBLIC_WEIGHT= $CONF_FILE | cut -d"=" -f2`
204
	weight=`grep ^PUBLIC_WEIGHT= $CONF_FILE | cut -d"=" -f2`
205
	already=`ipset list $gw_min | grep Number\ of\ entries: | cut -d":" -f2`
205
	already=`ipset list $gw_min | grep Number\ of\ entries: | cut -d":" -f2`
206
	#The *1000 is here to avoid working on floats in bash
206
	#The *1000 is here to avoid working on floats in bash
207
	gw_min_value=$((1000 * $already / $weight))
207
	gw_min_value=$((1000 * $already / $weight))
208
	i=1
208
	i=1
209
	for gw in $gw_list;do
209
	for gw in $gw_list;do
210
		if [ "$gw" != "gw0" ]; then
210
		if [ "$gw" != "gw0" ]; then
211
			weight=`grep ^WAN$i= $CONF_FILE | awk -F'"' '{ print $2 }' | awk -F ',' '{ print $2 }'`
211
			weight=`grep ^WAN$i= $CONF_FILE | awk -F'"' '{ print $2 }' | awk -F ',' '{ print $2 }'`
212
			already=`ipset list $gw | grep Number\ of\ entries: | cut -d":" -f2`
212
			already=`ipset list $gw | grep Number\ of\ entries: | cut -d":" -f2`
213
			value=$((1000 * $already / $weight))
213
			value=$((1000 * $already / $weight))
214
			if [ $value -lt $gw_min_value ]
214
			if [ $value -lt $gw_min_value ]
215
			then
215
			then
216
				gw_min_value=$value
216
				gw_min_value=$value
217
				gw_min=$gw
217
				gw_min=$gw
218
			fi
218
			fi
219
			i=$(($i+1))
219
			i=$(($i+1))
220
		fi
220
		fi
221
	done
221
	done
222
	ipset add $gw_min $ip
222
	ipset add $gw_min $ip
223
done
223
done
224
rm -f $TMP_ip_gw_save
224
rm -f $TMP_ip_gw_save
225
 
225
 
226
#############################
226
#############################
227
#       PREROUTING          #
227
#       PREROUTING          #
228
#############################
228
#############################
229
# Marquage (et journalisation) des paquets qui tentent d'accéder directement aux ports d'écoute du proxy HTTP/HTTPS (E2Guardian) pour pouvoir les rejeter en INPUT
229
# Marquage (et journalisation) des paquets qui tentent d'accéder directement aux ports d'écoute du proxy HTTP/HTTPS (E2Guardian) pour pouvoir les rejeter en INPUT
230
# Mark (and log) the direct attempts to E2guardian listen ports in order to REJECT them in INPUT rules
230
# Mark (and log) the direct attempts to E2guardian listen ports in order to REJECT them in INPUT rules
231
# 8080 = ipset av_bl
231
# 8080 = ipset av_bl
232
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
232
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
233
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
233
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
234
# 8081 = ipset av_wl + av (to be redefine)
234
# 8081 = ipset av_wl + av (to be redefine)
235
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8081 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
235
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8081 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
236
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8081 -j MARK --set-mark 2
236
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8081 -j MARK --set-mark 2
237
# 8443 = tranparent HTTPS for ipsets av_bl + av_wl + av (future version)
237
# 8443 = tranparent HTTPS for ipsets av_bl + av_wl + av (future version)
238
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8443 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
238
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8443 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
239
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8443 -j MARK --set-mark 6
239
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8443 -j MARK --set-mark 6
240
 
240
 
241
# Marquage des paquets qui tentent d'accéder directement aux ports d'écoute DNS (UNBOUND) pour pouvoir les rejeter en INPUT
241
# Marquage des paquets qui tentent d'accéder directement aux ports d'écoute DNS (UNBOUND) pour pouvoir les rejeter en INPUT
242
# Mark the direct attempts to DNS ports (UNBOUND) in order to REJECT them in INPUT rules
242
# Mark the direct attempts to DNS ports (UNBOUND) in order to REJECT them in INPUT rules
243
# 54 = ipset av_bl
243
# 54 = ipset av_bl
244
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 3
244
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 3
245
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 54 -j MARK --set-mark 3
245
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 54 -j MARK --set-mark 3
246
# 55 = ipset av_wl
246
# 55 = ipset av_wl
247
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 55 -j MARK --set-mark 4
247
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 55 -j MARK --set-mark 4
248
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 55 -j MARK --set-mark 4
248
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 55 -j MARK --set-mark 4
249
# 56 = blackall
249
# 56 = blackall
250
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 56 -j MARK --set-mark 5
250
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 56 -j MARK --set-mark 5
251
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 56 -j MARK --set-mark 5
251
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 56 -j MARK --set-mark 5
252
 
252
 
253
# redirection DNS des usagers
253
# redirection DNS des usagers
254
# users DNS redirection
254
# users DNS redirection
255
# 54 = ipset av_bl
255
# 54 = ipset av_bl
256
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -p udp --dport domain -j REDIRECT --to-port 54
256
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -p udp --dport domain -j REDIRECT --to-port 54
257
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -p tcp --dport domain -j REDIRECT --to-port 54
257
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -p tcp --dport domain -j REDIRECT --to-port 54
258
# 55 = ipset av_wl
258
# 55 = ipset av_wl
259
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -p udp --dport domain -j REDIRECT --to-port 55
259
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -p udp --dport domain -j REDIRECT --to-port 55
260
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -p tcp --dport domain -j REDIRECT --to-port 55
260
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -p tcp --dport domain -j REDIRECT --to-port 55
261
# 53 = all other users
261
# 53 = all other users
262
$IPTABLES -A PREROUTING -t nat -i $TUNIF ! -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 53
262
$IPTABLES -A PREROUTING -t nat -i $TUNIF ! -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 53
263
$IPTABLES -A PREROUTING -t nat -i $TUNIF ! -d $PRIVATE_IP -p tcp --dport domain -j REDIRECT --to-port 53
263
$IPTABLES -A PREROUTING -t nat -i $TUNIF ! -d $PRIVATE_IP -p tcp --dport domain -j REDIRECT --to-port 53
264
 
264
 
265
# Redirection HTTP des usagers 'av_bl' cherchant à joindre les IP de la blacklist vers ALCASAR (page 'accès interdit')
265
# Redirection HTTP des usagers 'av_bl' cherchant à joindre les IP de la blacklist vers ALCASAR (page 'accès interdit')
266
# Redirect HTTP of 'av_bl' users who want blacklist IP to ALCASAR ('access denied' page)
266
# Redirect HTTP of 'av_bl' users who want blacklist IP to ALCASAR ('access denied' page)
267
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p tcp --dport http -j REDIRECT --to-port 80
267
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p tcp --dport http -j REDIRECT --to-port 80
268
 
268
 
269
# Redirection HTTP des usagers 'av_wl' cherchant à joindre les IP qui ne sont pas dans la WL vers ALCASAR (page 'accès interdit')
269
# Redirection HTTP des usagers 'av_wl' cherchant à joindre les IP qui ne sont pas dans la WL vers ALCASAR (page 'accès interdit')
270
# Redirect HTTP of 'av_wl' users who want IP not in the WL to ALCASAR ('access denied' page)
270
# Redirect HTTP of 'av_wl' users who want IP not in the WL to ALCASAR ('access denied' page)
271
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -m set ! --match-set wl_ip_allowed dst -p tcp --dport http -j REDIRECT --to-port 80
271
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -m set ! --match-set wl_ip_allowed dst -p tcp --dport http -j REDIRECT --to-port 80
272
 
272
 
273
# Journalisation des usagers "av_bl + av_wl + av" (paquets SYN uniquement). Les autres protocoles sont journalisés en FORWARD par netflow.
273
# Journalisation des usagers "av_bl + av_wl + av" (paquets SYN uniquement). Les autres protocoles sont journalisés en FORWARD par netflow.
274
# accounting of "av_bl + av_wl + av"  users (only syn packets). Other protocols are logged in FORWARD by netflow
274
# accounting of "av_bl + av_wl + av"  users (only syn packets). Other protocols are logged in FORWARD by netflow
275
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src ! -d $PRIVATE_IP -p tcp --dport http -m conntrack --ctstate NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
275
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src ! -d $PRIVATE_IP -p tcp --dport http -m conntrack --ctstate NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
276
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src ! -d $PRIVATE_IP -p tcp --dport http -m conntrack --ctstate NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
276
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src ! -d $PRIVATE_IP -p tcp --dport http -m conntrack --ctstate NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
277
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src ! -d $PRIVATE_IP -p tcp --dport http -m conntrack --ctstate NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
277
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src ! -d $PRIVATE_IP -p tcp --dport http -m conntrack --ctstate NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
278
 
278
 
279
# Redirection des requêtes HTTP des usagers "av_bl + av_wl + av" vers E2guardian
279
# Redirection des requêtes HTTP des usagers "av_bl + av_wl + av" vers E2guardian
280
# Redirect outbound "av_bl + av_wl +av" users HTTP requests to E2guardian
280
# Redirect outbound "av_bl + av_wl +av" users HTTP requests to E2guardian
281
# 8080 = ipset av_bl
281
# 8080 = ipset av_bl
282
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport http -j MARK --set-mark 200
282
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport http -j MARK --set-mark 200
283
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport http -j REDIRECT --to-port 8080
283
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport http -j REDIRECT --to-port 8080
284
# 8081 = ipset av_wl & av
284
# 8081 = ipset av_wl & av
285
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8081
285
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8081
286
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8081
286
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8081
287
 
287
 
288
# Redirection des requêtes HTTPS sortantes des usagers av_bl + av_wl + av vers E2Guardian (in a future version - don't forget to set E2guardian as a tranparent HTTPS proxy)
288
# Redirection des requêtes HTTPS sortantes des usagers av_bl + av_wl + av vers E2Guardian (in a future version - don't forget to set E2guardian as a tranparent HTTPS proxy)
289
# Redirect outbound HTTPS requests of av_bl + av_wl + av users to E2Guardian
289
# Redirect outbound HTTPS requests of av_bl + av_wl + av users to E2Guardian
290
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443
290
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443
291
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443
291
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443
292
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443
292
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443
293
 
293
 
294
# Redirection des requêtes NTP vers le serveur NTP local
294
# Redirection des requêtes NTP vers le serveur NTP local
295
# Redirect NTP request in local NTP server
295
# Redirect NTP request in local NTP server
296
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
296
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
297
 
297
 
298
#Récupération de la marque associée à une gw pour chaque connection
298
#Récupération de la marque associée à une gw pour chaque connection
299
$IPTABLES -A PREROUTING -t mangle -j CONNMARK --restore-mark
299
$IPTABLES -A PREROUTING -t mangle -j CONNMARK --restore-mark
300
 
300
 
301
if [ "$PROXY" == "on" ] || [ "$PROXY" == "On" ];then
301
if [ "$PROXY" == "on" ] || [ "$PROXY" == "On" ];then
302
	$IPTABLES -A PREROUTING -t nat -i $TUNIF ! -d $PRIVATE_IP -p tcp -m multiport --dports http,https -j DNAT --to-destination $PROXY_IP
302
	$IPTABLES -A PREROUTING -t nat -i $TUNIF ! -d $PRIVATE_IP -p tcp -m multiport --dports http,https -j DNAT --to-destination $PROXY_IP
303
fi
303
fi
304
 
304
 
305
#Marquage pour le load balancing
305
#Marquage pour le load balancing
306
if [ "$MULTIWAN" == "on" ] || [ "$MULTIWAN" == "On" ]; then
306
if [ "$MULTIWAN" == "on" ] || [ "$MULTIWAN" == "On" ]; then
307
	temp_index=200
307
	temp_index=200
308
	for i in $gw_list; do
308
	for i in $gw_list; do
309
		$IPTABLES -A PREROUTING -t mangle -i $TUNIF -m set --match-set $i src -j MARK --set-mark $temp_index
309
		$IPTABLES -A PREROUTING -t mangle -i $TUNIF -m set --match-set $i src -j MARK --set-mark $temp_index
310
		temp_index=$(($temp_index+1))
310
		temp_index=$(($temp_index+1))
311
	done
311
	done
312
fi
312
fi
313
 
313
 
314
#############################
314
#############################
315
#         INPUT             #
315
#         INPUT             #
316
#############################
316
#############################
317
# Tout passe sur loopback
317
# Tout passe sur loopback
318
# accept all on loopback
318
# accept all on loopback
319
$IPTABLES -A INPUT -i lo -j ACCEPT
319
$IPTABLES -A INPUT -i lo -j ACCEPT
320
$IPTABLES -A OUTPUT -o lo -j ACCEPT
320
$IPTABLES -A OUTPUT -o lo -j ACCEPT
321
 
321
 
322
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
322
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
323
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST and NEW not SYN)
323
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST and NEW not SYN)
324
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
324
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
325
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
325
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
326
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
326
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
327
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
327
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
328
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m conntrack --ctstate NEW -j DROP
328
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m conntrack --ctstate NEW -j DROP
329
 
329
 
330
# Si configuré, on autorise les réponses DHCP sur EXTIF
330
# Si configuré, on autorise les réponses DHCP sur EXTIF
331
# If configured, DHCP responses are allowed on EXTIF
331
# If configured, DHCP responses are allowed on EXTIF
332
if [[ "$dhcp_on_extif" == "on" ]]
332
if [[ "$dhcp_on_extif" == "on" ]]
333
then
333
then
334
	$IPTABLES -A INPUT -i $EXTIF -p tcp --dport 68 -j ACCEPT
334
	$IPTABLES -A INPUT -i $EXTIF -p tcp --dport 68 -j ACCEPT
335
	$IPTABLES -A INPUT -i $EXTIF -p udp --dport 68 -j ACCEPT
335
	$IPTABLES -A INPUT -i $EXTIF -p udp --dport 68 -j ACCEPT
336
fi
336
fi
337
 
337
 
338
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
338
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
339
# Drop broadcast & multicast on EXTIF to avoid log
339
# Drop broadcast & multicast on EXTIF to avoid log
340
$IPTABLES -A INPUT -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
340
$IPTABLES -A INPUT -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
341
 
341
 
342
# On autorise les retours de connexions légitimes par INPUT
342
# On autorise les retours de connexions légitimes par INPUT
343
# Conntrack on INPUT
343
# Conntrack on INPUT
344
$IPTABLES -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
344
$IPTABLES -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
345
 
345
 
346
# On interdit les connexions directes aux ports d'écoute d'E2Guardian. Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
346
# On interdit les connexions directes aux ports d'écoute d'E2Guardian. Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
347
# Deny direct connections on E2Guardian listen ports. The concerned paquets have been marked and logged in mangle table (PREROUTING)
347
# Deny direct connections on E2Guardian listen ports. The concerned paquets have been marked and logged in mangle table (PREROUTING)
348
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset # av_bl
348
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset # av_bl
349
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8081 -m mark --mark 2 -j REJECT --reject-with tcp-reset # av_wl + av
349
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8081 -m mark --mark 2 -j REJECT --reject-with tcp-reset # av_wl + av
350
#$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8443 -m mark --mark 6 -j REJECT --reject-with tcp-reset # av_bl + av_wl + av (future version)
350
#$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8443 -m mark --mark 6 -j REJECT --reject-with tcp-reset # av_bl + av_wl + av (future version)
351
 
351
 
352
# On autorise les connexions HTTP/HTTPS légitimes vers E2Guardian
352
# On autorise les connexions HTTP/HTTPS légitimes vers E2Guardian
353
# Allow HTTP connections to E2Guardian
353
# Allow HTTP connections to E2Guardian
354
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m conntrack --ctstate NEW --syn -j ACCEPT
354
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m conntrack --ctstate NEW --syn -j ACCEPT
355
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8081 -m conntrack --ctstate NEW --syn -j ACCEPT
355
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8081 -m conntrack --ctstate NEW --syn -j ACCEPT
356
#$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8443 -m conntrack --ctstate NEW --syn -j ACCEPT # (future version)
356
#$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8443 -m conntrack --ctstate NEW --syn -j ACCEPT # (future version)
357
 
357
 
358
# On interdit les connexions directes aux ports d'écoupe DNS (UNBOUND). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
358
# On interdit les connexions directes aux ports d'écoupe DNS (UNBOUND). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
359
# Deny direct connections to DNS ports (UNBOUND). The concerned paquets are marked in mangle table (PREROUTING)
359
# Deny direct connections to DNS ports (UNBOUND). The concerned paquets are marked in mangle table (PREROUTING)
360
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable
360
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable
361
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 3 -j REJECT --reject-with tcp-reset
361
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 3 -j REJECT --reject-with tcp-reset
362
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 55 -m mark --mark 4 -j REJECT --reject-with icmp-port-unreachable
362
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 55 -m mark --mark 4 -j REJECT --reject-with icmp-port-unreachable
363
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 4 -j REJECT --reject-with tcp-reset
363
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 4 -j REJECT --reject-with tcp-reset
364
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 56 -m mark --mark 5 -j REJECT --reject-with icmp-port-unreachable
364
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 56 -m mark --mark 5 -j REJECT --reject-with icmp-port-unreachable
365
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 56 -m mark --mark 5 -j REJECT --reject-with tcp-reset
365
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 56 -m mark --mark 5 -j REJECT --reject-with tcp-reset
366
 
366
 
367
# On autorise les connexion DNS légitime
367
# On autorise les connexion DNS légitime
368
# Allow DNS connections
368
# Allow DNS connections
369
# ipset = av_bl
369
# ipset = av_bl
370
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
370
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
371
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 54 -j ACCEPT
371
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 54 -j ACCEPT
372
# ipset = av_wl
372
# ipset = av_wl
373
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 55 -j ACCEPT
373
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 55 -j ACCEPT
374
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 55 -j ACCEPT
374
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 55 -j ACCEPT
375
# blackall
375
# blackall
376
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 56 -j ACCEPT
376
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 56 -j ACCEPT
377
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 56 -j ACCEPT
377
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 56 -j ACCEPT
378
 
378
 
379
# On accepte l'accès aux services internes
379
# On accepte l'accès aux services internes
380
# Internal services access
380
# Internal services access
381
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS
381
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS
382
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport domain -j ACCEPT	# DNS
382
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport domain -j ACCEPT	# DNS
383
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
383
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
384
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
384
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
385
$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
385
$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
386
$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
386
$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
387
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 3990:3991 -j ACCEPT	# Requêtes de deconnexion usagers # Users logout requests
387
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 3990:3991 -j ACCEPT	# Requêtes de deconnexion usagers # Users logout requests
388
$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
388
$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
389
 
389
 
390
# Accès au serveur SSHD si activé en LAN et WAN
390
# Accès au serveur SSHD si activé en LAN et WAN
391
# SSHD server access in LAN and WAN if enabled
391
# SSHD server access in LAN and WAN if enabled
392
if [ $SSH_LAN -gt 0 ]
392
if [ $SSH_LAN -gt 0 ]
393
	then
393
	then
394
	$IPTABLES -A INPUT -i $TUNIF -s $SSH_LAN_ADMIN_FROM -d $PRIVATE_IP -p tcp --dport $SSH_LAN -m conntrack --ctstate NEW -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-LAN -- ACCEPT"
394
	$IPTABLES -A INPUT -i $TUNIF -s $SSH_LAN_ADMIN_FROM -d $PRIVATE_IP -p tcp --dport $SSH_LAN -m conntrack --ctstate NEW -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-LAN -- ACCEPT"
395
	$IPTABLES -A INPUT -i $TUNIF -s $SSH_LAN_ADMIN_FROM -d $PRIVATE_IP -p tcp --dport $SSH_LAN -j ACCEPT
395
	$IPTABLES -A INPUT -i $TUNIF -s $SSH_LAN_ADMIN_FROM -d $PRIVATE_IP -p tcp --dport $SSH_LAN -j ACCEPT
396
fi
396
fi
397
if [ $SSH_WAN -gt 0 ]
397
if [ $SSH_WAN -gt 0 ]
398
	then
398
	then
399
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_WAN_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport $SSH_WAN -m conntrack --ctstate NEW --syn -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-WAN -- ACCEPT"
399
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_WAN_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport $SSH_WAN -m conntrack --ctstate NEW --syn -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-WAN -- ACCEPT"
400
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_WAN_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport $SSH_WAN -j ACCEPT
400
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_WAN_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport $SSH_WAN -j ACCEPT
401
fi
401
fi
402
 
402
 
403
# Insertion de règles locales
403
# Insertion de règles locales
404
# Here, we add local rules (i.e. VPN from Internet)
404
# Here, we add local rules (i.e. VPN from Internet)
405
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
405
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
406
	. /usr/local/etc/alcasar-iptables-local.sh
406
	. /usr/local/etc/alcasar-iptables-local.sh
407
fi
407
fi
408
 
408
 
409
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
409
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
410
# Deny and log on INPUT from the LAN
410
# Deny and log on INPUT from the LAN
411
$IPTABLES -A INPUT -i $TUNIF -m conntrack --ctstate NEW -j NFLOG --nflog-group 3 --nflog-prefix "RULE rej-int -- REJECT "
411
$IPTABLES -A INPUT -i $TUNIF -m conntrack --ctstate NEW -j NFLOG --nflog-group 3 --nflog-prefix "RULE rej-int -- REJECT "
412
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
412
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
413
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
413
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
414
 
414
 
415
# Interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
415
# Interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
416
# Reject INTIF access (only when chilli is down)
416
# Reject INTIF access (only when chilli is down)
417
$IPTABLES -A INPUT -i $INTIF -j NFLOG --nflog-group 3 --nflog-prefix "RULE Protect1 -- REJECT "
417
$IPTABLES -A INPUT -i $INTIF -j NFLOG --nflog-group 3 --nflog-prefix "RULE Protect1 -- REJECT "
418
$IPTABLES -A INPUT -i $INTIF -j REJECT
418
$IPTABLES -A INPUT -i $INTIF -j REJECT
419
 
419
 
420
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
420
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
421
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
421
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
422
$IPTABLES -A INPUT -i $EXTIF -m conntrack --ctstate NEW -j NFLOG --nflog-group 3 --nflog-threshold 10 --nflog-prefix "RULE rej-ext -- DROP"
422
$IPTABLES -A INPUT -i $EXTIF -m conntrack --ctstate NEW -j NFLOG --nflog-group 3 --nflog-threshold 10 --nflog-prefix "RULE rej-ext -- DROP"
423
 
423
 
424
#############################
424
#############################
425
#        FORWARD            #
425
#        FORWARD            #
426
#############################
426
#############################
427
 
427
 
428
# Blocage des IPs du SET bl_ip_blocked pour le SET av_bl
428
# Blocage des IPs du SET bl_ip_blocked pour le SET av_bl
429
# Deny IPs of the SET bl_ip_blocked for the set av_bl
429
# Deny IPs of the SET bl_ip_blocked for the set av_bl
430
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p icmp -j REJECT --reject-with icmp-host-prohibited
430
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p icmp -j REJECT --reject-with icmp-host-prohibited
431
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p udp -j REJECT --reject-with icmp-host-prohibited
431
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p udp -j REJECT --reject-with icmp-host-prohibited
432
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p tcp -j REJECT --reject-with tcp-reset
432
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p tcp -j REJECT --reject-with tcp-reset
433
 
433
 
434
# Active le suivi de session
434
# Active le suivi de session
435
# Allow Conntrack
435
# Allow Conntrack
436
$IPTABLES -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
436
$IPTABLES -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
437
 
437
 
438
# Compute uamallowed IP (ie : IP address of equipments connected between ALCASAR and router like DMZ, own servers, etc.)
438
# Compute uamallowed IP (ie : IP address of equipments connected between ALCASAR and router like DMZ, own servers, etc.)
439
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
439
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
440
if [ $nb_uamallowed != "0" ]
440
if [ $nb_uamallowed != "0" ]
441
then
441
then
442
	while read ip_allowed_line
442
	while read ip_allowed_line
443
	do
443
	do
444
		ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
444
		ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
445
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m conntrack --ctstate NEW -j NETFLOW
445
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m conntrack --ctstate NEW -j NETFLOW
446
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m conntrack --ctstate NEW -j ACCEPT
446
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m conntrack --ctstate NEW -j ACCEPT
447
	done < /usr/local/etc/alcasar-uamallowed
447
	done < /usr/local/etc/alcasar-uamallowed
448
fi
448
fi
449
 
449
 
450
# filtrage protocole par utilisateur (profile 1 : http, https)
450
# filtrage protocole par utilisateur (profile 1 : http, https)
451
# protocols filtering for users (profil 1 : http, https)
451
# protocols filtering for users (profil 1 : http, https)
452
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https -m conntrack --ctstate NEW -j REJECT --reject-with tcp-reset
452
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https -m conntrack --ctstate NEW -j REJECT --reject-with tcp-reset
453
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https -m conntrack --ctstate NEW -j REJECT --reject-with icmp-port-unreachable
453
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https -m conntrack --ctstate NEW -j REJECT --reject-with icmp-port-unreachable
454
 
454
 
455
# filtrage protocole par utilisateur (profile 2 : http https smtp pop3 pop3s imap imaps ftp sftp ssh)
455
# filtrage protocole par utilisateur (profile 2 : http https smtp pop3 pop3s imap imaps ftp sftp ssh)
456
# protocols filtering for users (profil 2 : http https smtp pop3 pop3s imap imaps ftp sftp ssh)
456
# protocols filtering for users (profil 2 : http https smtp pop3 pop3s imap imaps ftp sftp ssh)
457
 
457
 
458
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports smtp,http,https,pop3,pop3s,imap,imaps,ftp,ftp-data,sftp,ssh -m conntrack --ctstate NEW -j REJECT --reject-with tcp-reset
458
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports smtp,http,https,pop3,pop3s,imap,imaps,ftp,ftp-data,sftp,ssh -m conntrack --ctstate NEW -j REJECT --reject-with tcp-reset
459
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports smtp,http,https,pop3,pop3s,imap,imaps,ftp,ftp-data,sftp,ssh -m conntrack --ctstate NEW -j REJECT --reject-with icmp-port-unreachable
459
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports smtp,http,https,pop3,pop3s,imap,imaps,ftp,ftp-data,sftp,ssh -m conntrack --ctstate NEW -j REJECT --reject-with icmp-port-unreachable
460
 
460
 
461
# filtrage protocole par utilisateur (profile 3 : personnalisable via l'ACC)
461
# filtrage protocole par utilisateur (profile 3 : personnalisable via l'ACC)
462
# protocols filtering for users (profil 3 : customized with ACC)
462
# protocols filtering for users (profil 3 : customized with ACC)
463
custom_tcp_protocols_list='';custom_udp_protocols_list=''
463
custom_tcp_protocols_list='';custom_udp_protocols_list=''
464
while read svc_line
464
while read svc_line
465
do
465
do
466
	svc_on=`echo $svc_line|cut -b1`
466
	svc_on=`echo $svc_line|cut -b1`
467
	if [ $svc_on != "#" ]
467
	if [ $svc_on != "#" ]
468
	then
468
	then
469
		svc_name=`echo $svc_line|cut -d" " -f1`
469
		svc_name=`echo $svc_line|cut -d" " -f1`
470
		svc_port=`echo $svc_line|cut -d" " -f2`
470
		svc_port=`echo $svc_line|cut -d" " -f2`
471
		if [ $svc_name = "icmp" ]
471
		if [ $svc_name = "icmp" ]
472
		then
472
		then
473
			svc_icmp="on"
473
			svc_icmp="on"
474
		else
474
		else
475
			if [ "$custom_tcp_protocols_list" == "" ]
475
			if [ "$custom_tcp_protocols_list" == "" ]
476
			then
476
			then
477
				custom_tcp_protocols_list=$svc_port
477
				custom_tcp_protocols_list=$svc_port
478
			else
478
			else
479
				custom_tcp_protocols_list=`echo $custom_tcp_protocols_list","$svc_port`
479
				custom_tcp_protocols_list=`echo $custom_tcp_protocols_list","$svc_port`
480
			fi
480
			fi
481
			udp_svc=`grep -E "[[:space:]]$svc_port/udp" /etc/services|wc -l`
481
			udp_svc=`grep -E "[[:space:]]$svc_port/udp" /etc/services|wc -l`
482
			if [ $udp_svc = "1" ] # udp service exist
482
			if [ $udp_svc = "1" ] # udp service exist
483
			then
483
			then
484
				if [ "$custom_udp_protocols_list" == "" ]
484
				if [ "$custom_udp_protocols_list" == "" ]
485
				then
485
				then
486
					custom_udp_protocols_list=$svc_port
486
					custom_udp_protocols_list=$svc_port
487
				else
487
				else
488
					custom_udp_protocols_list=`echo $custom_udp_protocols_list","$svc_port`
488
					custom_udp_protocols_list=`echo $custom_udp_protocols_list","$svc_port`
489
				fi
489
				fi
490
			fi
490
			fi
491
		fi
491
		fi
492
	fi
492
	fi
493
done < /usr/local/etc/alcasar-services
493
done < /usr/local/etc/alcasar-services
494
	if [ "$custom_tcp_protocols_list" == "" ]
494
	if [ "$custom_tcp_protocols_list" == "" ]
495
	then
495
	then
496
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -j REJECT
496
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -j REJECT
497
	else
497
	else
498
		if [ "$svc_icmp" != "on" ]
498
		if [ "$svc_icmp" != "on" ]
499
		then
499
		then
500
			$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
500
			$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
501
		fi
501
		fi
502
		$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 conntrack --ctstate NEW -j REJECT --reject-with tcp-reset
502
		$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 conntrack --ctstate NEW -j REJECT --reject-with tcp-reset
503
		$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 conntrack --ctstate NEW -j REJECT --reject-with icmp-port-unreachable
503
		$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 conntrack --ctstate NEW -j REJECT --reject-with icmp-port-unreachable
504
	fi
504
	fi
505
 
505
 
506
# On autorise (ou pas) les utilisateurs à accéder au réseau situé entre ALCASAR et le routeur Internet
506
# On autorise (ou pas) les utilisateurs à accéder au réseau situé entre ALCASAR et le routeur Internet
507
# Users are allowed (or not allowed) to access the network between ALCASAR and the Internet router
507
# Users are allowed (or not allowed) to access the network between ALCASAR and the Internet router
508
if [ "$interlan" != "on" ]
508
if [ "$interlan" != "on" ]
509
then
509
then
510
	$IPTABLES -A FORWARD -i $TUNIF -d $public_ip_mask -j DROP
510
	$IPTABLES -A FORWARD -i $TUNIF -d $public_ip_mask -j DROP
511
fi
511
fi
512
 
512
 
513
# Blocage des usagers 'av_wl' cherchant à joindre les IP qui ne sont pas dans la WL
513
# Blocage des usagers 'av_wl' cherchant à joindre les IP qui ne sont pas dans la WL
514
# Block 'av_wl' users who want IP not in the WL
514
# Block 'av_wl' users who want IP not in the WL
515
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_wl src -m set ! --match-set wl_ip_allowed dst -j DROP
515
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_wl src -m set ! --match-set wl_ip_allowed dst -j DROP
516
 
516
 
517
# journalisation et autorisation des connections sortant du LAN
517
# journalisation et autorisation des connections sortant du LAN
518
# Allow forward connections with log
518
# Allow forward connections with log
519
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m conntrack --ctstate NEW -j NETFLOW
519
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m conntrack --ctstate NEW -j NETFLOW
520
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m conntrack --ctstate NEW -j ACCEPT
520
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m conntrack --ctstate NEW -j ACCEPT
521
 
521
 
522
#############################
522
#############################
523
#         OUTPUT            #
523
#         OUTPUT            #
524
#############################
524
#############################
525
# On laisse tout sortir sur la carte interne (voir les règles suivantes pour la carte externe)
525
# On laisse tout sortir sur la carte interne (voir les règles suivantes pour la carte externe)
526
# We let everything out on INTIF (see following rules for the EXTIF)
526
# We let everything out on INTIF (see following rules for the EXTIF)
527
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
527
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
528
 
528
 
529
# Si configuré, on autorise les requêtes DHCP sur EXTIF
529
# Si configuré, on autorise les requêtes DHCP sur EXTIF
530
# Allow DHCP requests on EXTIF if configured
530
# Allow DHCP requests on EXTIF if configured
531
if [[ "$dhcp_on_extif" == "on" ]]
531
if [[ "$dhcp_on_extif" == "on" ]]
532
then
532
then
533
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 67 -j ACCEPT
533
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 67 -j ACCEPT
534
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 67 -j ACCEPT
534
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 67 -j ACCEPT
535
fi
535
fi
536
 
536
 
537
# On autorise les requêtes DNS vers les serveurs DNS identifiés
537
# On autorise les requêtes DNS vers les serveurs DNS identifiés
538
# Allow DNS requests to identified DNS servers
538
# Allow DNS requests to identified DNS servers
539
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m conntrack --ctstate NEW -j ACCEPT
539
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m conntrack --ctstate NEW -j ACCEPT
540
 
540
 
541
# On autorise les requêtes HTTP et HTTPS avec log Netflow (en provenance de E2guardian)
541
# On autorise les requêtes HTTP et HTTPS avec log Netflow (en provenance de E2guardian)
542
# HTTP & HTTPS requests are allowed with netflow log (from E2guardian)
542
# HTTP & HTTPS requests are allowed with netflow log (from E2guardian)
543
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
543
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
544
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
544
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
545
#$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport https -j NETFLOW # When E2guardian will be in HTTPS transparent proxy)
545
#$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport https -j NETFLOW # When E2guardian will be in HTTPS transparent proxy)
546
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport https -j ACCEPT
546
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport https -j ACCEPT
547
 
547
 
548
# On autorise les requêtes RSYNC sortantes (maj BL de Toulouse)
548
# On autorise les requêtes RSYNC sortantes (maj BL de Toulouse)
549
# RSYNC requests are allowed (update of Toulouse BL)
549
# RSYNC requests are allowed (update of Toulouse BL)
550
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport rsync -j ACCEPT
550
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport rsync -j ACCEPT
551
 
551
 
552
# On autorise les requêtes FTP
552
# On autorise les requêtes FTP
553
# FTP requests are allowed
553
# FTP requests are allowed
554
# modprobe nf_conntrack_ftp # no more needed with kernel > 5.15.85
554
# modprobe nf_conntrack_ftp # no more needed with kernel > 5.15.85
555
# $IPTABLES -t raw -A OUTPUT -p tcp --dport ftp -j CT --helper ftp # no more needed with kernel > 5.15.85
555
# $IPTABLES -t raw -A OUTPUT -p tcp --dport ftp -j CT --helper ftp # no more needed with kernel > 5.15.85
556
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
556
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
557
$IPTABLES -A OUTPUT -o $EXTIF -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
557
$IPTABLES -A OUTPUT -o $EXTIF -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
558
 
558
 
559
# On autorise les requêtes NTP
559
# On autorise les requêtes NTP
560
# NTP requests are allowed
560
# NTP requests are allowed
561
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
561
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
562
 
562
 
563
# On autorise les requêtes ICMP (ping)
563
# On autorise les requêtes ICMP (ping)
564
# ICMP (ping) requests are allowed
564
# ICMP (ping) requests are allowed
565
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
565
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
566
 
566
 
567
# On autorise les requêtes LDAP
567
# On autorise les requêtes LDAP
568
# LDAP requests are allowed
568
# LDAP requests are allowed
569
$IPTABLES -A OUTPUT -o $EXTIF -p tcp -m multiport --dports ldap,ldaps -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
569
$IPTABLES -A OUTPUT -o $EXTIF -p tcp -m multiport --dports ldap,ldaps -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
570
$IPTABLES -A OUTPUT -o $EXTIF -p udp -m multiport --dports ldap,ldaps -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
570
$IPTABLES -A OUTPUT -o $EXTIF -p udp -m multiport --dports ldap,ldaps -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
571
 
571
 
572
#############################
572
#############################
573
#       POSTROUTING         #
573
#       POSTROUTING         #
574
#############################
574
#############################
575
# Traduction dynamique d'adresse en sortie
575
# Traduction dynamique d'adresse en sortie
576
# Dynamic NAT on EXTIF
576
# Dynamic NAT on EXTIF
577
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
577
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
578
 
578
 
579
#Sauvegarde de la marque associée à la connexion pour le load balancing
579
#Sauvegarde de la marque associée à la connexion pour le load balancing
580
$IPTABLES -A POSTROUTING -t mangle -j CONNMARK --save-mark
580
$IPTABLES -A POSTROUTING -t mangle -j CONNMARK --save-mark
581
 
581
 
582
#############################
582
#############################
583
#          FAIL2BAN         #
583
#          FAIL2BAN         #
584
#############################
584
#############################
585
# Reload Fail2Ban
585
# Reload Fail2Ban
586
if systemctl -q is-active fail2ban; then
586
if systemctl -q is-active fail2ban; then
587
	/usr/bin/fail2ban-client ping &>/dev/null && /usr/bin/fail2ban-client -q reload &>/dev/null
587
	/usr/bin/fail2ban-client ping &>/dev/null && /usr/bin/fail2ban-client -q reload &>/dev/null
588
fi
588
fi
589
 
589