Subversion Repositories ALCASAR

#!/bin/sh
# $Id: alcasar-iptables-local.sh 1829 2016-04-19 22:14:42Z richard $
# script de mise en place des regles personnalisées du parefeu d'Alcasar 
# Rexy - 3abtux - CPN
# version 2.2 (04/2016)
# changelog :
#       + example to allow ICMP from an Internet IP address (Admin_from) to EXTIF
#       + exemple to allow SMTP from aLCASAR to an Internet server (SMTP_IP)
#       + exemple of PAT rules from Internet
#       + List of local MAC addresses filtered (MAC are in '/usr/local/etc/alcasar-iptables-local-mac-filtered'. Format : aa:09:23:2f:4d:ee)
# this script inherit of alcasar-iptables.sh variables : $INTIF, $EXTIF, $IPTABLES, etc
# Local MAC addresses filtering 
if [ -s /usr/local/etc/alcasar-iptables-local-mac-filtered ]; then
          while read mac_line
          do
                  ip_on=`echo $mac_line|cut -b1`
                  if [ $ip_on != "#" ]
                  then
                          mac_filtered=`echo $mac_line|cut -d" " -f1`
                          echo "MAC filtered = $mac_filtered"
                          $IPTABLES -A FORWARD -i $INTIF -m mac --mac-source $mac_filtered -j ULOG --ulog-prefix "$mac_filtered -- Filt_DROP"
                          $IPTABLES -A FORWARD -i $INTIF -p tcp -m mac --mac-source $mac_filtered -j DROP
                          $IPTABLES -A FORWARD -i $INTIF -p udp -m mac --mac-source $mac_filtered -j DROP
                          $IPTABLES -A FORWARD -i $INTIF  -m mac --mac-source $mac_filtered -j DROP
                  fi
          done < /usr/local/etc/alcasar-iptables-local-mac-filtered
fi

# On autorise le ping (echo & request) (icmp N°0 & 8) en provenance de l'extérieur vers ALCASAR
# ping (echo & request) (icmp N°0 & 8) is allowed on EXTIF
#$IPTABLES -A INPUT -i $EXTIF -s $Admin_from_IP -p icmp --icmp-type 8 -j ACCEPT
#$IPTABLES -A OUTPUT -o $EXTIF -d $Admin_from_IP -p icmp --icmp-type 0 -j ACCEPT

# On autorise l'accès à un serveur MAIL (SMTP) pour l'envoie de rapports, alertes (logwatch, etc.)
#SMTP_IP=0.0.0.0                        # renseigner l'@IP du serveur SMTP
#$IPTABLES -A OUTPUT -p tcp -d $SMTP_IP --dport smtp -m state --state NEW,ESTABLISHED -j ACCEPT
#$IPTABLES -A INPUT  -p tcp -s $SMTP_IP --sport smtp -m state --state ESTABLISHED -j ACCEPT

# On autorise du PAT (Port Adresse Translation) afin de pouvoir joindre des équipements du LAN depuis Internet
#m_ports=5000,5001
#to_ip=192.168.182.3
#$IPTABLES -A PREROUTING -i $EXTIF -t nat -p tcp -d $PUBLIC_IP -m multiport --dports $m_ports -j DNAT --to $to_ip
#$IPTABLES -A FORWARD -i $EXTIF -p tcp -d $to_ip -m multiport --dports $m_ports -j ACCEPT
#$IPTABLES -A FORWARD -o $EXTIF -p tcp -s $to_ip -m multiport --sports $m_ports -j ACCEPT

# Fin du script des règles du parefeu