Subversion Repositories ALCASAR

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Ignore whitespace Rev 2005 → Rev 2006

/scripts/alcasar-iptables.sh
33,8 → 33,6
dns1=${dns1:=208.67.220.220}
dns2=${dns2:=208.67.222.222}
DNSSERVERS="$dns1,$dns2" # first and second public DNS servers
PROTOCOLS_FILTERING=`grep ^PROTOCOLS_FILTERING= $CONF_FILE|cut -d"=" -f2` # Network protocols filter (on/off)
PROTOCOLS_FILTERING=${PROTOCOLS_FILTERING:=off}
BL_IP_CAT="/usr/local/share/iptables-bl-enabled" # categories files of the BlackListed IP
WL_IP_CAT="/usr/local/share/iptables-wl-enabled" # categories files of the WhiteListed IP
TMP_users_set_save="/tmp/users_set_save" # tmp file for backup users set
62,6 → 60,10
ipset save havp_wl >> $TMP_users_set_save
ipset save not_auth_yet >> $TMP_users_set_save
ipset save users_list >> $TMP_users_set_save
ipset save proto_0 >> $TMP_users_set_save
ipset save proto_1 >> $TMP_users_set_save
ipset save proto_2 >> $TMP_users_set_save
ipset save proto_3 >> $TMP_users_set_save
fi
 
# loading of NetFlow probe (ipt_NETFLOW kernel module)
150,6 → 152,11
ipset add users_list havp_bl
ipset add users_list not_filtered
ipset add users_list not_auth_yet
#pour les filtrages de protocole par utilisateur
ipset create proto_0 hash:net hashsize 1024
ipset create proto_1 hash:net hashsize 1024
ipset create proto_2 hash:net hashsize 1024
ipset create proto_3 hash:net hashsize 1024
fi
 
#############################
362,55 → 369,80
# Autorisation des retours de connexions légitimes
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
 
# If protocols filter is activate
if [ $PROTOCOLS_FILTERING = on ]; then
# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...)
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" " -f1`
if [ $nb_uamallowed != "0" ]
then
while read ip_allowed_line
do
ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NFLOG --nflog-prefix "RULE IP-allowed -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
done < /usr/local/etc/alcasar-uamallowed
fi
# Autorisation du HTTP et des protocoles non commentés
# Allow HTTP and non comment protocols
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport http -m state --state NEW -j NFLOG --nflog-prefix "RULE F_TCP-$svc_name -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport http -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport http -m state --state NEW -j ACCEPT
while read svc_line
# Compute uamallowed IP (IP address of equipments connected between ALCASAR and Internet (DMZ, own servers, ...)
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" " -f1`
if [ $nb_uamallowed != "0" ]
then
while read ip_allowed_line
do
svc_on=`echo $svc_line|cut -b1`
if [ $svc_on != "#" ]
then
svc_name=`echo $svc_line|cut -d" " -f1`
svc_port=`echo $svc_line|cut -d" " -f2`
if [ $svc_name = "icmp" ]
then
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p icmp -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p icmp -j ACCEPT
else
ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NFLOG --nflog-prefix "RULE IP-allowed -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m state --state NEW -j ACCEPT
done < /usr/local/etc/alcasar-uamallowed
fi
 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j NFLOG --nflog-prefix "RULE F_TCP-$svc_name -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j ACCEPT
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j NFLOG --nflog-prefix "RULE F_UDP-$svc_name -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j ACCEPT
fi
 
 
#filtrage protocole par utilisateur (on autorise le HTTP pour tous)
#profile 1 : HTTP/S only
for proto in $(echo http https)
do
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p tcp --dport $proto -m state --state NEW -j NFLOG --nflog-prefix "RULE F_TCP-P1$proto -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p tcp --dport $proto -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p tcp --dport $proto -m state --state NEW -j ACCEPT
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p udp --dport $proto -m state --state NEW -j NFLOG --nflog-prefix "RULE F_UDP-P1$proto -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p udp --dport $proto -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p udp --dport $proto -m state --state NEW -j ACCEPT
done
 
#profile 2 : HTTP/S, POP3S, IMAP/S, FTP, SSH/SFTP
for proto in $(echo http https pop3 pop3s imap imaps ftp sftp ssh)
do
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p tcp --dport $proto -m state --state NEW -j NFLOG --nflog-prefix "RULE F_TCP-P2$proto -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p tcp --dport $proto -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p tcp --dport $proto -m state --state NEW -j ACCEPT
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p udp --dport $proto -m state --state NEW -j NFLOG --nflog-prefix "RULE F_UDP-P2$proto -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p udp --dport $proto -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p udp --dport $proto -m state --state NEW -j ACCEPT
done
 
#profile 3 personalisables via l'ACC
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp --dport http -m state --state NEW -j NFLOG --nflog-prefix "RULE F_TCP-P3http -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp --dport http -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp --dport http -m state --state NEW -j ACCEPT
while read svc_line
do
svc_on=`echo $svc_line|cut -b1`
if [ $svc_on != "#" ]
then
svc_name=`echo $svc_line|cut -d" " -f1`
svc_port=`echo $svc_line|cut -d" " -f2`
if [ $svc_name = "icmp" ]
then
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p icmp -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p icmp -j ACCEPT
else
 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j NFLOG --nflog-prefix "RULE F_TCP-P3$svc_name -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp --dport $svc_port -m state --state NEW -j ACCEPT
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j NFLOG --nflog-prefix "RULE F_UDP-P3$svc_name -- ACCEPT "
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j NETFLOW
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p udp --dport $svc_port -m state --state NEW -j ACCEPT
fi
done < /usr/local/etc/alcasar-services
# Rejet explicite des autres protocoles
# reject the others protocols
$IPTABLES -A FORWARD -i $TUNIF -j NFLOG --nflog-prefix "RULE F_filter -- REJECT "
$IPTABLES -A FORWARD -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
$IPTABLES -A FORWARD -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
$IPTABLES -A FORWARD -i $TUNIF -p icmp -j REJECT
fi
fi
done < /usr/local/etc/alcasar-services
 
# Rejet explicite des autres protocoles pour P1, P2, P3 et les autres
# reject the others protocols for P1,P2, P3 and other
$IPTABLES -A FORWARD -i $TUNIF -m set ! --match-set proto_0 src -j NFLOG --nflog-prefix "RULE F_filterP1 -- REJECT "
$IPTABLES -A FORWARD -i $TUNIF -m set ! --match-set proto_0 src -p tcp -j REJECT --reject-with tcp-reset
$IPTABLES -A FORWARD -i $TUNIF -m set ! --match-set proto_0 src -p udp -j REJECT --reject-with icmp-port-unreachable
$IPTABLES -A FORWARD -i $TUNIF -m set ! --match-set proto_0 src -p icmp -j REJECT
 
 
 
# Autorisation des connections sortant du LAN
# Allow forward connections with log
#$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m state --state NEW -j ULOG --ulog-prefix "RULE F_all -- ACCEPT "