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#!/bin/bash
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#!/bin/bash
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# $Id: alcasar-iptables.sh 2224 2017-05-14 14:42:05Z tom.houdayer $
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# $Id: alcasar-iptables.sh 2234 2017-05-18 21:20:10Z richard $
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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`
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private_ip_mask=`grep ^PRIVATE_IP= $CONF_FILE|cut -d"=" -f2`
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private_ip_mask=${private_ip_mask:=192.168.182.1/24}
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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= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
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if [[ "$public_ip_mask" == "dhcp" ]]
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if [[ "$public_ip_mask" == "dhcp" ]]
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then
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then
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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 | egrep -o $PTN`
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	public_ip_mask=`ip addr show $EXTIF | egrep -o $PTN`
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fi
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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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BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
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BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
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WL_IP_CAT="/usr/local/share/iptables-wl-enabled"			# categories files of the WhiteListed IP
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WL_IP_CAT="/usr/local/share/iptables-wl-enabled"			# categories files of the WhiteListed IP
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TMP_users_set_save="/tmp/users_set_save"				# tmp file for backup users set 
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TMP_users_set_save="/tmp/users_set_save"				# tmp file for backup users set 
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TMP_set_save="/tmp/ipset_save"						# tmp file for blacklist and whitelist creation
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TMP_set_save="/tmp/ipset_save"						# tmp file for blacklist and whitelist creation
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SSH=`grep ^SSH= $CONF_FILE|cut -d"=" -f2`				# sshd active (on/off)
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SSH=`grep ^SSH= $CONF_FILE|cut -d"=" -f2`				# sshd active (on/off)
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SSH=${SSH:=off}
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SSH=${SSH:=off}
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SSH_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2`
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SSH_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2`
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SSH_ADMIN_FROM=${SSH_ADMIN_FROM:="0.0.0.0/0.0.0.0"}			# WAN IP address to reduce ssh access (all ip allowed on LAN side)
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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)
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LDAP=`grep ^LDAP= $CONF_FILE|cut -d"=" -f2`				# LDAP external server active (on/off)
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LDAP=`grep ^LDAP= $CONF_FILE|cut -d"=" -f2`				# LDAP external server active (on/off)
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LDAP=${LDAP:=off}
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LDAP=${LDAP:=off}
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LDAP_IP=`grep ^LDAP_IP= $CONF_FILE|cut -d"=" -f2`			# WAN IP address to reduce LDAP WAN access (all ip allowed on LAN side)
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LDAP_IP=`grep ^LDAP_IP= $CONF_FILE|cut -d"=" -f2`			# WAN IP address to reduce LDAP WAN access (all ip allowed on LAN side)
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LDAP_IP=${LDAP_IP:="0.0.0.0/0.0.0.0"}
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LDAP_IP=${LDAP_IP:="0.0.0.0/0.0.0.0"}
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IPTABLES="/sbin/iptables"
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IPTABLES="/sbin/iptables"
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IP_REHABILITEES="/etc/dansguardian/lists/exceptioniplist"		# Rehabilitated IP
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IP_REHABILITEES="/etc/dansguardian/lists/exceptioniplist"		# Rehabilitated IP
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SAVE_DIR="/etc/sysconfig"						# Saving path
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SAVE_DIR="/etc/sysconfig"						# Saving path
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51
 
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# Sauvegarde des SET des utilisateurs connectés si ils existent
52
# Sauvegarde des SET des utilisateurs connectés si ils existent
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# Saving SET of connected users if it exists
53
# Saving SET of connected users if it exists
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ipset list not_filtered 1>/dev/null 2>&1
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ipset list not_filtered 1>/dev/null 2>&1
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if [ $? -eq 0 ];
55
if [ $? -eq 0 ];
56
then
56
then
57
	ipset save not_filtered > $TMP_users_set_save
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	ipset save not_filtered > $TMP_users_set_save
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	ipset save havp >> $TMP_users_set_save
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	ipset save havp >> $TMP_users_set_save
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	ipset save havp_bl >> $TMP_users_set_save
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	ipset save havp_bl >> $TMP_users_set_save
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	ipset save havp_wl >> $TMP_users_set_save
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	ipset save havp_wl >> $TMP_users_set_save
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	ipset save not_auth_yet >> $TMP_users_set_save
-
 
62
	ipset save users_list >> $TMP_users_set_save
-
 
63
	ipset save proto_0 >> $TMP_users_set_save
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	ipset save proto_0 >> $TMP_users_set_save
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	ipset save proto_1 >> $TMP_users_set_save
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	ipset save proto_1 >> $TMP_users_set_save
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	ipset save proto_2 >> $TMP_users_set_save
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	ipset save proto_2 >> $TMP_users_set_save
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	ipset save proto_3 >> $TMP_users_set_save
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	ipset save proto_3 >> $TMP_users_set_save
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fi
65
fi
68
 
66
 
69
# loading of NetFlow probe (ipt_NETFLOW kernel module)
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# loading of NetFlow probe (ipt_NETFLOW kernel module)
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modprobe ipt_NETFLOW destination=127.0.0.1:2055
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modprobe ipt_NETFLOW destination=127.0.0.1:2055
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69
 
72
# Effacement des règles existantes
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# Effacement des règles existantes
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# Flush all existing rules
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# Flush all existing rules
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$IPTABLES -F
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$IPTABLES -F
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$IPTABLES -t nat -F
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$IPTABLES -t nat -F
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$IPTABLES -t mangle -F
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$IPTABLES -t mangle -F
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$IPTABLES -F INPUT
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$IPTABLES -F INPUT
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$IPTABLES -F FORWARD
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$IPTABLES -F FORWARD
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$IPTABLES -F OUTPUT
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$IPTABLES -F OUTPUT
80
 
78
 
81
# Suppression des chaines utilisateurs sur les tables filter et nat
79
# Suppression des chaines utilisateurs sur les tables filter et nat
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# Flush non default rules on filter and nat tables
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# Flush non default rules on filter and nat tables
83
$IPTABLES -X
81
$IPTABLES -X
84
$IPTABLES -t nat -X
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$IPTABLES -t nat -X
85
 
83
 
86
# Stratégies par défaut
84
# Stratégies par défaut
87
# Default policies
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# Default policies
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$IPTABLES -P INPUT DROP
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$IPTABLES -P INPUT DROP
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$IPTABLES -P FORWARD DROP
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$IPTABLES -P FORWARD DROP
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$IPTABLES -P OUTPUT DROP
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$IPTABLES -P OUTPUT DROP
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$IPTABLES -t nat -P PREROUTING ACCEPT
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$IPTABLES -t nat -P PREROUTING ACCEPT
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$IPTABLES -t nat -P POSTROUTING ACCEPT
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$IPTABLES -t nat -P POSTROUTING ACCEPT
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$IPTABLES -t nat -P OUTPUT ACCEPT
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$IPTABLES -t nat -P OUTPUT ACCEPT
94
 
92
 
95
 
93
 
96
#############################
94
#############################
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#          IPSET            #
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#          IPSET            #
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#############################
96
#############################
99
 
97
 
100
# destruction de tous les SET
98
# destruction de tous les SET
101
# destroy all SET
99
# destroy all SET
102
ipset flush
100
ipset flush
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ipset destroy
101
ipset destroy
104
 
102
 
105
###### BL set  ###########
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###### BL set  ###########
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# Calcul de la taille / Compute the length
104
# Calcul de la taille / Compute the length
107
bl_set_length=$(wc -l $BL_IP_CAT/* | awk '{print $1}' | tail -n 1)
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bl_set_length=$(wc -l $BL_IP_CAT/* | awk '{print $1}' | tail -n 1)
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# Chargement / loading
106
# Chargement / loading
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echo "create bl_ip_blocked hash:net family inet hashsize 1024 maxelem $bl_set_length" > $TMP_set_save
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echo "create bl_ip_blocked hash:net family inet hashsize 1024 maxelem $bl_set_length" > $TMP_set_save
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for category in `ls -1 $BL_IP_CAT | cut -d '@' -f1`
108
for category in `ls -1 $BL_IP_CAT | cut -d '@' -f1`
111
do
109
do
112
	cat $BL_IP_CAT/$category >> $TMP_set_save
110
	cat $BL_IP_CAT/$category >> $TMP_set_save
113
done
111
done
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ipset -! restore < $TMP_set_save
112
ipset -! restore < $TMP_set_save
115
rm -f $TMP_set_save
113
rm -f $TMP_set_save
116
# Suppression des ip réhabilitées / Removing of rehabilitated ip
114
# Suppression des ip réhabilitées / Removing of rehabilitated ip
117
for ip in $(cat $IP_REHABILITEES)
115
for ip in $(cat $IP_REHABILITEES)
118
do
116
do
119
	ipset del bl_ip_blocked $ip
117
	ipset del bl_ip_blocked $ip
120
done
118
done
121
 
119
 
122
###### WL set  ###########
120
###### WL set  ###########
123
# taille fixe, car peupler par dnsmasq / fixe length due to dnsmasq dynamic loading
121
# taille fixe, car peupler par dnsmasq / fixe length due to dnsmasq dynamic loading
124
wl_set_length=65536
122
wl_set_length=65536
125
# Chargement Loading
123
# Chargement Loading
126
echo "create wl_ip_allowed hash:net family inet hashsize 1024 maxelem $wl_set_length" > $TMP_set_save
124
echo "create wl_ip_allowed hash:net family inet hashsize 1024 maxelem $wl_set_length" > $TMP_set_save
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#get ip-wl files from ACC
125
#get ip-wl files from ACC
128
for category in `ls -1 $WL_IP_CAT |cut -d '@' -f1`
126
for category in `ls -1 $WL_IP_CAT |cut -d '@' -f1`
129
do
127
do
130
	cat $WL_IP_CAT/$category >> $TMP_set_save
128
	cat $WL_IP_CAT/$category >> $TMP_set_save
131
done
129
done
132
ipset -! restore < $TMP_set_save
130
ipset -! restore < $TMP_set_save
133
rm -f $TMP_set_save
131
rm -f $TMP_set_save
134
 
132
 
135
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET 
133
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET 
136
# Restoring the connected users SETs if available, otherwise creating SETs
134
# Restoring the connected users SETs if available, otherwise creating SETs
137
if [ -e $TMP_users_set_save ];
135
if [ -e $TMP_users_set_save ];
138
then
136
then
139
	ipset -! restore < $TMP_users_set_save
137
	ipset -! restore < $TMP_users_set_save
140
	rm -f $TMP_users_set_save
138
	rm -f $TMP_users_set_save
141
else
139
else
142
	ipset create not_filtered hash:net hashsize 1024
140
	ipset create not_filtered hash:net hashsize 1024
143
	ipset create havp hash:net hashsize 1024
141
	ipset create havp hash:net hashsize 1024
144
	ipset create havp_bl hash:net hashsize 1024
142
	ipset create havp_bl hash:net hashsize 1024
145
	ipset create havp_wl hash:net hashsize 1024
143
	ipset create havp_wl hash:net hashsize 1024
146
	#utilisé pour l'interception des utilisateurs non authentifiés au réseau
-
 
147
	#used for intercepting users not connected to the network
-
 
148
	ipset create not_auth_yet hash:net hashsize 1024
-
 
149
	ipset create users_list list:set
-
 
150
	ipset add users_list havp
-
 
151
	ipset add users_list havp_wl
-
 
152
	ipset add users_list havp_bl
-
 
153
	ipset add users_list not_filtered
-
 
154
	ipset add users_list not_auth_yet
-
 
155
	#pour les filtrages de protocole par utilisateur
144
	#pour les filtrages de protocole par utilisateur
156
	ipset create proto_0 hash:net hashsize 1024
145
	ipset create proto_0 hash:net hashsize 1024
157
	ipset create proto_1 hash:net hashsize 1024
146
	ipset create proto_1 hash:net hashsize 1024
158
	ipset create proto_2 hash:net hashsize 1024
147
	ipset create proto_2 hash:net hashsize 1024
159
	ipset create proto_3 hash:net hashsize 1024
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	ipset create proto_3 hash:net hashsize 1024
160
fi
149
fi
161
 
150
 
162
#############################
151
#############################
163
#       PREROUTING          #
152
#       PREROUTING          #
164
#############################
153
#############################
165
 
154
 
166
# Redirection des requetes DNS des utilisateurs non connectés dans le DNS-Blackhole
-
 
167
# Redirect users not connected DNS requests in DNS-Blackhole
-
 
168
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set ! --match-set users_list src -d $PRIVATE_IP -p tcp --dport domain -j REDIRECT --to-port 56
-
 
169
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set ! --match-set users_list src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 56
-
 
170
 
-
 
171
# Marquage des paquets qui tentent d'accéder directement à un serveur sans authentification en mode proxy pour pouvoir les rejeter en INPUT
155
# Marquage des paquets qui tentent d'accéder directement à un serveur sans authentification en mode proxy pour pouvoir les rejeter en INPUT
172
# Mark packets that attempt to directly access a server without authentication with proxy client to reject them in INPUT rules
156
# Mark packets that attempt to directly access a server without authentication with proxy client to reject them in INPUT rules
173
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp -m tcp --dport 80 -m string --string 'GET http' --algo bm --from 50 --to 70 -j MARK --set-mark 10
157
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp -m tcp --dport 80 -m string --string 'GET http' --algo bm --from 50 --to 70 -j MARK --set-mark 10
174
 
158
 
175
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au 8080 (DansGuardian) pour pouvoir les rejeter en INPUT
159
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au 8080 (DansGuardian) pour pouvoir les rejeter en INPUT
176
# Mark (and log) the direct attempts to TCP port 8090 (dansguardian) in order to REJECT them in INPUT rules
160
# Mark (and log) the direct attempts to TCP port 8090 (dansguardian) in order to REJECT them in INPUT rules
177
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-prefix "RULE direct-proxy -- DENY "
161
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-prefix "RULE direct-proxy -- DENY "
178
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
162
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
179
 
163
 
180
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port 8090 (tinyproxy) pour pouvoir les rejeter en INPUT
164
# Marquage (et journalisation) des paquets qui tentent d'accéder directement au port 8090 (tinyproxy) pour pouvoir les rejeter en INPUT
181
# Mark (and log) the direct attempts to TCP port 8090 (tinyproxy) in order to REJECT them in INPUT rules
165
# Mark (and log) the direct attempts to TCP port 8090 (tinyproxy) in order to REJECT them in INPUT rules
182
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8090 -j NFLOG --nflog-prefix "RULE direct-proxy -- DENY "
166
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8090 -j NFLOG --nflog-prefix "RULE direct-proxy -- DENY "
183
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8090 -j MARK --set-mark 2
167
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8090 -j MARK --set-mark 2
184
 
168
 
185
# Marquage des paquets qui tentent d'accéder directement au port 54 (DNS-blacklist) pour pouvoir les rejeter en INPUT
169
# Marquage des paquets qui tentent d'accéder directement au port 54 (DNS-blacklist) pour pouvoir les rejeter en INPUT
186
# Mark the direct attempts to port 54 (DNS-blacklist) in order to REJECT them in INPUT rules
170
# Mark the direct attempts to port 54 (DNS-blacklist) in order to REJECT them in INPUT rules
187
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 3
171
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 3
188
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 54 -j MARK --set-mark 3
172
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 54 -j MARK --set-mark 3
189
 
173
 
190
# Marquage des paquets qui tentent d'accéder directement au port 55 (DNS-Whitelist) pour pouvoir les rejeter en INPUT
174
# Marquage des paquets qui tentent d'accéder directement au port 55 (DNS-Whitelist) pour pouvoir les rejeter en INPUT
191
# Mark the direct attempts to port 55 (DNS-whitelist) in order to REJECT them in INPUT rules
175
# Mark the direct attempts to port 55 (DNS-whitelist) in order to REJECT them in INPUT rules
192
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 55 -j MARK --set-mark 4
176
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 55 -j MARK --set-mark 4
193
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 55 -j MARK --set-mark 4
177
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 55 -j MARK --set-mark 4
194
 
178
 
195
# Marquage des paquets qui tentent d'accéder directement au port 56 (DNS-Blackhole) pour pouvoir les rejeter en INPUT
179
# Marquage des paquets qui tentent d'accéder directement au port 56 (DNS-Blackhole) pour pouvoir les rejeter en INPUT
196
# Mark the direct attempts to port 56 (DNS-blackhole) in order to REJECT them in INPUT rules
180
# Mark the direct attempts to port 56 (DNS-blackhole) in order to REJECT them in INPUT rules
197
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 56 -j MARK --set-mark 5
181
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 56 -j MARK --set-mark 5
198
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 56 -j MARK --set-mark 5
182
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 56 -j MARK --set-mark 5
199
 
183
 
200
# redirection DNS des usagers 'havp_bl' vers le port 54
184
# redirection DNS des usagers 'havp_bl' vers le port 54
201
# redirect DNS of 'havp_bl' users to port 54
185
# redirect DNS of 'havp_bl' users to port 54
202
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 54
186
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 54
203
 
187
 
204
# redirection DNS des usagers 'havp_wl' vers le port 55
188
# redirection DNS des usagers 'havp_wl' vers le port 55
205
# redirect DNS of 'havp_wl' users to port 55
189
# redirect DNS of 'havp_wl' users to port 55
206
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 55
190
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 55
207
 
191
 
208
# Journalisation HTTP_Internet des usagers 'havp_bl' (paquets SYN uniquement). Les autres protocoles sont journalisés en FORWARD par netflow. 
192
# Journalisation HTTP_Internet des usagers 'havp_bl' (paquets SYN uniquement). Les autres protocoles sont journalisés en FORWARD par netflow. 
209
# Log Internet HTTP of 'havp_bl' users" (only syn packets). Other protocols are logged in FORWARD by netflow
193
# Log Internet HTTP of 'havp_bl' users" (only syn packets). Other protocols are logged in FORWARD by netflow
210
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src ! -d $PRIVATE_IP -p tcp --dport http -m state --state NEW -j NFLOG --nflog-prefix "RULE F_http -- ACCEPT "
194
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src ! -d $PRIVATE_IP -p tcp --dport http -m state --state NEW -j NFLOG --nflog-prefix "RULE F_http -- ACCEPT "
211
 
195
 
212
# Redirection HTTP des usagers 'havp_bl' cherchant à joindre les IP de la blacklist vers ALCASAR (page 'accès interdit')
196
# Redirection HTTP des usagers 'havp_bl' cherchant à joindre les IP de la blacklist vers ALCASAR (page 'accès interdit')
213
# Redirect HTTP of 'havp_bl' users who want blacklist IP to ALCASAR ('access denied' page)
197
# Redirect HTTP of 'havp_bl' users who want blacklist IP to ALCASAR ('access denied' page)
214
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p tcp --dport http -j REDIRECT --to-port 80
198
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p tcp --dport http -j REDIRECT --to-port 80
215
 
199
 
216
# Redirection HTTP des usagers 'havp_wl' cherchant à joindre les IP qui ne sont pas dans la WL vers ALCASAR (page 'accès interdit')
200
# Redirection HTTP des usagers 'havp_wl' cherchant à joindre les IP qui ne sont pas dans la WL vers ALCASAR (page 'accès interdit')
217
# Redirect HTTP of 'havp_wl' users who want IP not in the WL to ALCASAR ('access denied' page)
201
# Redirect HTTP of 'havp_wl' users who want IP not in the WL to ALCASAR ('access denied' page)
218
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src -m set ! --match-set wl_ip_allowed dst -p tcp --dport http -j REDIRECT --to-port 80
202
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src -m set ! --match-set wl_ip_allowed dst -p tcp --dport http -j REDIRECT --to-port 80
219
 
203
 
220
# Redirection des requêtes HTTP sortantes des usagers 'havp_bl' vers DansGuardian
204
# Redirection des requêtes HTTP sortantes des usagers 'havp_bl' vers DansGuardian
221
# Redirect outbound HTTP requests of "BL" users to DansGuardian (transparent proxy)
205
# Redirect outbound HTTP requests of "BL" users to DansGuardian (transparent proxy)
222
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8080
206
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_bl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8080
223
 
207
 
224
# Redirection des requêtes HTTP sortantes des usager 'havp_wl' et 'havp' vers Tinyproxy
208
# Redirection des requêtes HTTP sortantes des usager 'havp_wl' et 'havp' vers Tinyproxy
225
# Redirect outbound HTTP requests for "WL-antivirus" users to Tinyproxy
209
# Redirect outbound HTTP requests for "WL-antivirus" users to Tinyproxy
226
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
210
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
227
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
211
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set havp src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
228
 
212
 
229
# Redirection des requêtes NTP vers le serveur NTP local
213
# Redirection des requêtes NTP vers le serveur NTP local
230
# Redirect NTP request in local NTP server
214
# Redirect NTP request in local NTP server
231
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
215
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
232
 
216
 
233
#############################
217
#############################
234
#         INPUT             #
218
#         INPUT             #
235
#############################
219
#############################
236
 
220
 
237
# Tout passe sur loopback
221
# Tout passe sur loopback
238
# accept all on loopback
222
# accept all on loopback
239
$IPTABLES -A INPUT -i lo -j ACCEPT
223
$IPTABLES -A INPUT -i lo -j ACCEPT
240
$IPTABLES -A OUTPUT -o lo -j ACCEPT
224
$IPTABLES -A OUTPUT -o lo -j ACCEPT
241
 
225
 
242
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
226
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
243
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
227
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
244
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
228
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
245
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
229
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
246
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
230
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
247
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
231
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
248
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
232
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
249
 
233
 
250
# Si configéré, on autorise les réponses DHCP 
234
# Si configéré, on autorise les réponses DHCP 
251
# Allow DHCP answers if configured
235
# Allow DHCP answers if configured
252
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
236
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
253
if [[ "$public_ip_mask" == "dhcp" ]]
237
if [[ "$public_ip_mask" == "dhcp" ]]
254
then
238
then
255
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 68 -j ACCEPT
239
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 68 -j ACCEPT
256
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 68 -j ACCEPT
240
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 68 -j ACCEPT
257
fi
241
fi
258
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
242
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
259
# Drop broadcast & multicast on EXTIF to avoid log 
243
# Drop broadcast & multicast on EXTIF to avoid log 
260
$IPTABLES -A INPUT -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
244
$IPTABLES -A INPUT -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
261
 
245
 
262
# On autorise les retours de connexions légitimes par INPUT
246
# On autorise les retours de connexions légitimes par INPUT
263
# Conntrack on INPUT
247
# Conntrack on INPUT
264
$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
248
$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
265
 
249
 
266
# On interdit les connexions directes au port utilisé par DansGuardian (8080). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
250
# On interdit les connexions directes au port utilisé par DansGuardian (8080). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
267
# Deny direct connections on DansGuardian port (8080). The concerned paquets have been marked and logged in mangle table (PREROUTING)
251
# Deny direct connections on DansGuardian port (8080). The concerned paquets have been marked and logged in mangle table (PREROUTING)
268
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset
252
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset
269
 
253
 
270
# Autorisation des connexions légitimes à DansGuardian 
254
# Autorisation des connexions légitimes à DansGuardian 
271
# Allow connections for DansGuardian
255
# Allow connections for DansGuardian
272
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m state --state NEW --syn -j ACCEPT
256
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m state --state NEW --syn -j ACCEPT
273
 
257
 
274
# On interdit les connexions directes au port utilisé par tinyproxy (8090). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
258
# On interdit les connexions directes au port utilisé par tinyproxy (8090). Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
275
# Deny direct connections on tinyproxy port (8090). The concerned paquets have been marked in mangle table (PREROUTING)
259
# Deny direct connections on tinyproxy port (8090). The concerned paquets have been marked in mangle table (PREROUTING)
276
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8090 -m mark --mark 2 -j REJECT --reject-with tcp-reset
260
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8090 -m mark --mark 2 -j REJECT --reject-with tcp-reset
277
 
261
 
278
# Autorisation des connexions légitimes vers tinyproxy 
262
# Autorisation des connexions légitimes vers tinyproxy 
279
# Allow connections to tinyproxy
263
# Allow connections to tinyproxy
280
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8090 -m state --state NEW --syn -j ACCEPT
264
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8090 -m state --state NEW --syn -j ACCEPT
281
 
265
 
282
# On interdit les connexions directes au port 54 (DNS-blacklist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
266
# On interdit les connexions directes au port 54 (DNS-blacklist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
283
# Deny direct connections on port 54 (DNS-blacklist). The concerned paquets are marked in mangle table (PREROUTING)
267
# Deny direct connections on port 54 (DNS-blacklist). The concerned paquets are marked in mangle table (PREROUTING)
284
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable
268
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable
285
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 3 -j REJECT --reject-with tcp-reset
269
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 3 -j REJECT --reject-with tcp-reset
286
 
270
 
287
# On interdit les connexions directes au port 55 (DNS-whitelist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
271
# On interdit les connexions directes au port 55 (DNS-whitelist). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
288
# Deny direct connections on port 55 (DNS-whitelist). The concerned paquets are marked in mangle table (PREROUTING)
272
# Deny direct connections on port 55 (DNS-whitelist). The concerned paquets are marked in mangle table (PREROUTING)
289
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 55 -m mark --mark 4 -j REJECT --reject-with icmp-port-unreachable
273
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 55 -m mark --mark 4 -j REJECT --reject-with icmp-port-unreachable
290
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 3 -j REJECT --reject-with tcp-reset
274
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 3 -j REJECT --reject-with tcp-reset
291
 
275
 
292
# On interdit les connexions directes au port 56 (DNS-Blackhole). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
276
# On interdit les connexions directes au port 56 (DNS-Blackhole). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
293
# Deny direct connections on port 56 (DNS-blackhole). The concerned paquets are marked in mangle table (PREROUTING)
277
# Deny direct connections on port 56 (DNS-blackhole). The concerned paquets are marked in mangle table (PREROUTING)
294
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 56 -m mark --mark 5 -j REJECT --reject-with icmp-port-unreachable
278
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 56 -m mark --mark 5 -j REJECT --reject-with icmp-port-unreachable
295
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 56 -m mark --mark 3 -j REJECT --reject-with tcp-reset
279
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 56 -m mark --mark 3 -j REJECT --reject-with tcp-reset
296
 
280
 
297
# autorisation des connexion légitime à DNSMASQ (avec blacklist)
281
# autorisation des connexion légitime à DNSMASQ (avec blacklist)
298
# Allow connections for DNSMASQ (with blacklist)
282
# Allow connections for DNSMASQ (with blacklist)
299
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
283
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
300
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 54 -j ACCEPT
284
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 54 -j ACCEPT
301
 
285
 
302
# autorisation des connexion légitime à DNSMASQ (avec whitelist)
286
# autorisation des connexion légitime à DNSMASQ (avec whitelist)
303
# Allow connections for DNSMASQ (with whitelist)
287
# Allow connections for DNSMASQ (with whitelist)
304
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 55 -j ACCEPT
288
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 55 -j ACCEPT
305
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 55 -j ACCEPT
289
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 55 -j ACCEPT
306
 
290
 
307
# autorisation des connexion légitime à DNSMASQ (mode blackhole)
291
# autorisation des connexion légitime à DNSMASQ (mode blackhole)
308
# Allow connections for DNSMASQ (blackhole mode)
292
# Allow connections for DNSMASQ (blackhole mode)
309
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 56 -j ACCEPT
293
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 56 -j ACCEPT
310
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 56 -j ACCEPT
294
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 56 -j ACCEPT
311
 
295
 
312
# Accès direct aux services internes
296
# Accès direct aux services internes
313
# Internal services access
297
# Internal services access
314
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS 
298
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS 
315
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport domain -j ACCEPT	# DNS
299
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport domain -j ACCEPT	# DNS
316
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
300
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
317
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
301
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
318
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport https -j ACCEPT	# Pages d'authentification et MCC # authentication pages and MCC
302
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport https -j ACCEPT	# Pages d'authentification et MCC # authentication pages and MCC
319
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport http -j ACCEPT	# Page d'avertissement filtrage # Filtering warning pages
303
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport http -j ACCEPT	# Page d'avertissement filtrage # Filtering warning pages
320
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 3990 -j ACCEPT	# Requêtes de deconnexion usagers # Users logout requests
304
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 3990 -j ACCEPT	# Requêtes de deconnexion usagers # Users logout requests
321
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport ntp -j ACCEPT	# Serveur local de temps # local time server
305
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport ntp -j ACCEPT	# Serveur local de temps # local time server
322
 
306
 
323
# SSHD rules if activate 
307
# SSHD rules if activate 
324
if [ $SSH = on ]
308
if [ $SSH = on ]
325
	then
309
	then
326
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -m state --state NEW -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-LAN -- ACCEPT"
310
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -m state --state NEW -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-LAN -- ACCEPT"
327
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -j ACCEPT
311
	$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport ssh -j ACCEPT
328
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW --syn -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-WAN -- ACCEPT"
312
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW --syn -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-WAN -- ACCEPT"
329
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW -j ACCEPT
313
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport ssh -m state --state NEW -j ACCEPT
330
fi
314
fi
331
 
315
 
332
# Insertion de règles locales
316
# Insertion de règles locales
333
# Here, we add local rules (i.e. VPN from Internet)
317
# Here, we add local rules (i.e. VPN from Internet)
334
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
318
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
335
        . /usr/local/etc/alcasar-iptables-local.sh
319
        . /usr/local/etc/alcasar-iptables-local.sh
336
fi
320
fi
337
 
321
 
338
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
322
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
339
# Deny and log on INPUT from the LAN
323
# Deny and log on INPUT from the LAN
340
$IPTABLES -A INPUT -i $TUNIF -m state --state NEW -j NFLOG --nflog-prefix "RULE rej-int -- REJECT "
324
$IPTABLES -A INPUT -i $TUNIF -m state --state NEW -j NFLOG --nflog-prefix "RULE rej-int -- REJECT "
341
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
325
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
342
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
326
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
343
 
327
 
344
# Interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
328
# Interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
345
# Reject INTIF access (only when chilli is down)
329
# Reject INTIF access (only when chilli is down)
346
$IPTABLES -A INPUT -i $INTIF -j NFLOG --nflog-prefix "RULE Protect1 -- REJECT "
330
$IPTABLES -A INPUT -i $INTIF -j NFLOG --nflog-prefix "RULE Protect1 -- REJECT "
347
$IPTABLES -A INPUT -i $INTIF -j REJECT
331
$IPTABLES -A INPUT -i $INTIF -j REJECT
348
 
332
 
349
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
333
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
350
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
334
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
351
$IPTABLES -A INPUT -i $EXTIF -m state --state NEW -j NFLOG --nflog-group 3 --nflog-threshold 10 --nflog-prefix "RULE rej-ext -- DROP"
335
$IPTABLES -A INPUT -i $EXTIF -m state --state NEW -j NFLOG --nflog-group 3 --nflog-threshold 10 --nflog-prefix "RULE rej-ext -- DROP"
352
 
336
 
353
#############################
337
#############################
354
#        FORWARD            #
338
#        FORWARD            #
355
#############################
339
#############################
356
 
340
 
357
# Blocage des IPs du SET bl_ip_blocked pour le SET havp_bl
341
# Blocage des IPs du SET bl_ip_blocked pour le SET havp_bl
358
# Deny IPs of the SET bl_ip_blocked for the set havp_bl
342
# Deny IPs of the SET bl_ip_blocked for the set havp_bl
359
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p icmp -j REJECT --reject-with icmp-host-prohibited
343
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p icmp -j REJECT --reject-with icmp-host-prohibited
360
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p udp -j REJECT --reject-with icmp-host-prohibited
344
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p udp -j REJECT --reject-with icmp-host-prohibited
361
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p tcp -j REJECT --reject-with tcp-reset
345
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set havp_bl src -m set --match-set bl_ip_blocked dst -p tcp -j REJECT --reject-with tcp-reset
362
 
346
 
363
# Rejet des requêtes DNS vers Internet
347
# Rejet des requêtes DNS vers Internet
364
# Deny forward DNS
348
# Deny forward DNS
365
$IPTABLES -A FORWARD -i $TUNIF -p udp --dport domain -j REJECT --reject-with icmp-port-unreachable
349
$IPTABLES -A FORWARD -i $TUNIF -p udp --dport domain -j REJECT --reject-with icmp-port-unreachable
366
$IPTABLES -A FORWARD -i $TUNIF -p tcp --dport domain -j REJECT --reject-with tcp-reset
350
$IPTABLES -A FORWARD -i $TUNIF -p tcp --dport domain -j REJECT --reject-with tcp-reset
367
 
351
 
368
# Active le suivi de session
352
# Active le suivi de session
369
# Allow Conntrack
353
# Allow Conntrack
370
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
354
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
371
 
355
 
372
# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...) 
356
# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...) 
373
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
357
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
374
if [ $nb_uamallowed != "0" ]
358
if [ $nb_uamallowed != "0" ]
375
then
359
then
376
	while read ip_allowed_line 
360
	while read ip_allowed_line 
377
	do
361
	do
378
		ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
362
		ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
379
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NETFLOW
363
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NETFLOW
380
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
364
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
381
	done < /usr/local/etc/alcasar-uamallowed
365
	done < /usr/local/etc/alcasar-uamallowed
382
fi
366
fi
383
 
367
 
384
# filtrage protocole par utilisateur (profile 1 : http, https)
368
# filtrage protocole par utilisateur (profile 1 : http, https)
385
# protocols filtering for users (profil 1 : http, https)
369
# protocols filtering for users (profil 1 : http, https)
386
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https -m state --state NEW -j REJECT --reject-with tcp-reset
370
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https -m state --state NEW -j REJECT --reject-with tcp-reset
387
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
371
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
388
 
372
 
389
# filtrage protocole par utilisateur (profile 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
373
# filtrage protocole par utilisateur (profile 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
390
# protocols filtering for users (profil 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
374
# protocols filtering for users (profil 2 : http https pop3 pop3s imap imaps ftp sftp ssh)
391
 
375
 
392
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https,pop3,pop3s,imap,imaps,ftp,ftp-data,sftp,ssh -m state --state NEW -j REJECT --reject-with tcp-reset
376
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https,pop3,pop3s,imap,imaps,ftp,ftp-data,sftp,ssh -m state --state NEW -j REJECT --reject-with tcp-reset
393
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https,pop3,pop3s,imap,imaps,ssh -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
377
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https,pop3,pop3s,imap,imaps,ssh -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
394
 
378
 
395
# filtrage protocole par utilisateur (profile 3 : personnalisable via l'ACC)
379
# filtrage protocole par utilisateur (profile 3 : personnalisable via l'ACC)
396
# protocols filtering for users (profil 3 : customized with ACC)
380
# protocols filtering for users (profil 3 : customized with ACC)
397
#profile 3 personalisables via l'ACC
381
#profile 3 personalisables via l'ACC
398
custom_tcp_protocols_list='';custom_udp_protocols_list=''
382
custom_tcp_protocols_list='';custom_udp_protocols_list=''
399
while read svc_line
383
while read svc_line
400
do
384
do
401
	svc_on=`echo $svc_line|cut -b1`
385
	svc_on=`echo $svc_line|cut -b1`
402
	if [ $svc_on != "#" ]
386
	if [ $svc_on != "#" ]
403
	then	
387
	then	
404
		svc_name=`echo $svc_line|cut -d" " -f1`
388
		svc_name=`echo $svc_line|cut -d" " -f1`
405
		svc_port=`echo $svc_line|cut -d" " -f2`
389
		svc_port=`echo $svc_line|cut -d" " -f2`
406
		if [ $svc_name = "icmp" ]
390
		if [ $svc_name = "icmp" ]
407
		then
391
		then
408
			svc_icmp="on"
392
			svc_icmp="on"
409
		else
393
		else
410
			if [ "$custom_tcp_protocols_list" == "" ]
394
			if [ "$custom_tcp_protocols_list" == "" ]
411
			then
395
			then
412
				custom_tcp_protocols_list=$svc_port
396
				custom_tcp_protocols_list=$svc_port
413
			else
397
			else
414
				custom_tcp_protocols_list=`echo $custom_tcp_protocols_list","$svc_port`
398
				custom_tcp_protocols_list=`echo $custom_tcp_protocols_list","$svc_port`
415
			fi
399
			fi
416
			udp_svc=`egrep "[[:space:]]$svc_port/udp" /etc/services|wc -l`
400
			udp_svc=`egrep "[[:space:]]$svc_port/udp" /etc/services|wc -l`
417
			if [ $udp_svc = "1" ] # udp service exist
401
			if [ $udp_svc = "1" ] # udp service exist
418
			then
402
			then
419
				if [ "$custom_udp_protocols_list" == "" ]
403
				if [ "$custom_udp_protocols_list" == "" ]
420
				then
404
				then
421
					custom_udp_protocols_list=$svc_port
405
					custom_udp_protocols_list=$svc_port
422
				else
406
				else
423
					custom_udp_protocols_list=`echo $custom_udp_protocols_list","$svc_port`
407
					custom_udp_protocols_list=`echo $custom_udp_protocols_list","$svc_port`
424
				fi
408
				fi
425
			fi
409
			fi
426
		fi
410
		fi
427
	fi
411
	fi
428
done < /usr/local/etc/alcasar-services
412
done < /usr/local/etc/alcasar-services
429
	if [ "$custom_tcp_protocols_list" == "" ]
413
	if [ "$custom_tcp_protocols_list" == "" ]
430
	then
414
	then
431
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -j REJECT
415
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -j REJECT
432
	else
416
	else
433
		if [ "$svc_icmp" != "on" ]
417
		if [ "$svc_icmp" != "on" ]
434
		then
418
		then
435
			$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p icmp -j REJECT --reject-with icmp-proto-unreachable
419
			$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p icmp -j REJECT --reject-with icmp-proto-unreachable
436
		fi
420
		fi
437
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports $custom_tcp_protocols_list -m state --state NEW -j REJECT --reject-with tcp-reset
421
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports $custom_tcp_protocols_list -m state --state NEW -j REJECT --reject-with tcp-reset
438
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports $custom_udp_protocols_list -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
422
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports $custom_udp_protocols_list -m state --state NEW -j REJECT --reject-with icmp-port-unreachable
439
	fi
423
	fi
440
 
424
 
441
# journalisation et autorisation des connections sortant du LAN  
425
# journalisation et autorisation des connections sortant du LAN  
442
# Allow forward connections with log
426
# Allow forward connections with log
443
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j NETFLOW
427
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j NETFLOW
444
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ACCEPT
428
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ACCEPT
445
 
429
 
446
#############################
430
#############################
447
#         OUTPUT            #
431
#         OUTPUT            #
448
#############################
432
#############################
449
# On laisse tout sortir sur toutes les cartes sauf celle qui est connectée sur l'extérieur
433
# On laisse tout sortir sur toutes les cartes sauf celle qui est connectée sur l'extérieur
450
# Everything is allowed but traffic through outside network interface
434
# Everything is allowed but traffic through outside network interface
451
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
435
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
452
 
436
 
453
# Si configéré, on autorise les requêtes DHCP 
437
# Si configéré, on autorise les requêtes DHCP 
454
# Allow DHCP requests if configured
438
# Allow DHCP requests if configured
455
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
439
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
456
if [[ "$public_ip_mask" == "dhcp" ]]
440
if [[ "$public_ip_mask" == "dhcp" ]]
457
then
441
then
458
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 67 -j ACCEPT
442
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 67 -j ACCEPT
459
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 67 -j ACCEPT
443
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 67 -j ACCEPT
460
fi
444
fi
461
 
445
 
462
# On autorise les requêtes DNS vers les serveurs DNS identifiés 
446
# On autorise les requêtes DNS vers les serveurs DNS identifiés 
463
# Allow DNS requests to identified DNS servers
447
# Allow DNS requests to identified DNS servers
464
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m state --state NEW -j ACCEPT
448
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m state --state NEW -j ACCEPT
465
 
449
 
466
# On autorise les requêtes HTTP sortantes
450
# On autorise les requêtes HTTP sortantes
467
# HTTP requests are allowed
451
# HTTP requests are allowed
468
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
452
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
469
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
453
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
470
 
454
 
471
# On autorise les requêtes RSYNC sortantes (maj BL de Toulouse)
455
# On autorise les requêtes RSYNC sortantes (maj BL de Toulouse)
472
# RSYNC requests are allowed (to update BL of Toulouse)
456
# RSYNC requests are allowed (to update BL of Toulouse)
473
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport rsync -j ACCEPT
457
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport rsync -j ACCEPT
474
 
458
 
475
# On autorise les requêtes FTP 
459
# On autorise les requêtes FTP 
476
# FTP requests are allowed
460
# FTP requests are allowed
477
modprobe nf_conntrack_ftp
461
modprobe nf_conntrack_ftp
478
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
462
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
479
$IPTABLES -A OUTPUT -o $EXTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
463
$IPTABLES -A OUTPUT -o $EXTIF -m state --state ESTABLISHED,RELATED -j ACCEPT
480
 
464
 
481
# On autorise les requêtes NTP 
465
# On autorise les requêtes NTP 
482
# NTP requests are allowed
466
# NTP requests are allowed
483
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
467
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
484
 
468
 
485
# On autorise les requêtes ICMP (ping) 
469
# On autorise les requêtes ICMP (ping) 
486
# ICMP (ping) requests are allowed
470
# ICMP (ping) requests are allowed
487
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
471
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
488
 
472
 
489
# On autorise les requêtes LDAP si un serveur externe est configué
473
# On autorise les requêtes LDAP si un serveur externe est configué
490
# LDAP requests are allowed if an external server is declared
474
# LDAP requests are allowed if an external server is declared
491
if [ $LDAP = on ]
475
if [ $LDAP = on ]
492
	then
476
	then
493
	$IPTABLES -A OUTPUT -p tcp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
477
	$IPTABLES -A OUTPUT -p tcp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
494
	$IPTABLES -A OUTPUT -p udp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
478
	$IPTABLES -A OUTPUT -p udp -d $LDAP_IP -m multiport --dports ldap,ldaps -m state --state NEW,ESTABLISHED -j ACCEPT
495
fi
479
fi
496
 
480
 
497
#############################
481
#############################
498
#       POSTROUTING         #
482
#       POSTROUTING         #
499
#############################
483
#############################
500
# Traduction dynamique d'adresse en sortie
484
# Traduction dynamique d'adresse en sortie
501
# Dynamic NAT on EXTIF
485
# Dynamic NAT on EXTIF
502
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
486
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
503
 
487
 
504
# End of script
488
# End of script
505
 
489
 
506
 
490