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richard |
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#!/bin/sh
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tom.houday |
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#
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franck |
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# $Id: alcasar-iptables-local.sh 2993 2022-03-06 23:02:08Z rexy $
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tom.houday |
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#
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# Custom rules for ALCASAR firewall
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#
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# Examples:
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# - Local MAC addresses filtering (MAC are in '/usr/local/etc/alcasar-iptables-local-mac-filtered'. Format : aa:09:23:2f:4d:ee)
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# - allow ICMP from an Internet IP address (Admin_from) to EXTIF
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# - Deny access to protected networks from internal LAN
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rexy |
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# - allow SMTP from ALCASAR to an Internet server
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tom.houday |
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# - Allow managers to access ACC from the external network
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rexy |
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# - Ports Address Translation (PAT) from Internet (one & multiple)
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tom.houday |
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# This script inherit of alcasar-iptables.sh variables : $INTIF, $EXTIF, $IPTABLES, etc
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rexy |
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# !!Beware, run the script "alcasar-iptables.sh" after changing this file.
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tom.houday |
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# Local MAC addresses filtering (MAC are in '/usr/local/etc/alcasar-iptables-local-mac-filtered'. Format : aa:09:23:2f:4d:ee)
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richard |
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if [ -s /usr/local/etc/alcasar-iptables-local-mac-filtered ]; then
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tom.houday |
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while read mac_line
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do
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ip_on=`echo $mac_line|cut -b1`
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if [ $ip_on != "#" ]
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then
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mac_filtered=`echo $mac_line|cut -d" " -f1`
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echo "MAC filtered = $mac_filtered"
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$IPTABLES -A FORWARD -i $INTIF -m mac --mac-source $mac_filtered -j NFLOG --nflog-group 1 --nflog-prefix "$mac_filtered -- Filt_DROP"
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$IPTABLES -A FORWARD -i $INTIF -p tcp -m mac --mac-source $mac_filtered -j DROP
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$IPTABLES -A FORWARD -i $INTIF -p udp -m mac --mac-source $mac_filtered -j DROP
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$IPTABLES -A FORWARD -i $INTIF -m mac --mac-source $mac_filtered -j DROP
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fi
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done < /usr/local/etc/alcasar-iptables-local-mac-filtered
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franck |
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fi
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richard |
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rexy |
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# On autorise le ping (echo & request) (ICMP N°0 & 8) en provenance d'Internet vers ALCASAR
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# Allow ping (echo & request) (ICMP N°0 & 8) from Internet
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rexy |
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#$IPTABLES -A INPUT -i $EXTIF -p icmp --icmp-type 8 -j ACCEPT
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#$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 0 -j ACCEPT
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richard |
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rexy |
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# On interdit les utilisateurs d'accéder à des réseaux situés entre ALCASAR et le routeur d'accès à Internet
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# Deny access of users to networks connected between ALCASAR and Internet broadband router
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#protectedNetworks='10.0.0.0/8,172.16.0.0/12,192.168.0.0/16' # (RFC 1918)
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#[ -n "$TUNIF" ] && consultationIF=$TUNIF || consultationIF=$INTIF
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#$IPTABLES -A FORWARD -i $consultationIF -d $protectedNetworks -j DROP
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#$IPTABLES -A FORWARD -o $consultationIF -s $protectedNetworks -j DROP
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rexy |
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# On autorise ALCASAR a accéder à un serveur MAIL (envoie de rapports, alertes, inscription d'utilisateurs, etc.)
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# Allow ALCASAR to connect to a mail server (send reports, alerts, users registration, etc.)
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#SMTP_IP='192.168.111.5'
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#SMTP_PORT=25
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tom.houday |
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#$IPTABLES -A OUTPUT -p tcp -d $SMTP_IP --dport $SMTP_PORT -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
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#$IPTABLES -A INPUT -p tcp -s $SMTP_IP --sport $SMTP_PORT -m conntrack --ctstate ESTABLISHED -j ACCEPT
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richard |
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rexy |
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# On autorise un admin à accéder à l'ACC depuis l'extérieur (Internet ou le LAN entre ALCASAR et la BOX)
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# Allow managerIP to access ACC from the external network (Internet or LAN between ALCASAR and the broadband router)
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#managerIPs='192.168.0.10'
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#externalPort='34443'
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#$IPTABLES -t mangle -A PREROUTING -i $EXTIF -s $managerIPs -p tcp -d $PUBLIC_IP --dport $externalPort -j MARK --set-mark 100
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#$IPTABLES -t nat -A PREROUTING -i $EXTIF -s $managerIPs -p tcp -d $PUBLIC_IP --dport $externalPort -j DNAT --to $PRIVATE_IP:443
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#$IPTABLES -A INPUT -i $EXTIF -s $managerIPs -p tcp --dport 443 -m mark --mark 100 -j ACCEPT
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rexy |
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# On autorise l'accès depuis Internet (ex: port 11222) vers un equipement du LAN (ex: port 22). L'équipement sur le LAN doit être en IP fixe
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# Access is allowed from Internet (ie: port 11222) to a LAN equipment (ie: port 22). The equipment must be in static IP
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rexy |
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#$IPTABLES -A PREROUTING -i $EXTIF -t nat -p tcp -d $PUBLIC_IP --dport 11222 -j DNAT --to 192.168.182.10:22
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#$IPTABLES -A PREROUTING -i $EXTIF -t nat -p udp -d $PUBLIC_IP --dport 11222 -j DNAT --to 192.168.182.10:22
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#$IPTABLES -A FORWARD -p tcp -d 192.168.182.10 --dport 22 -j ACCEPT
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tom.houday |
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#$IPTABLES -A FORWARD -p udp -d 192.168.182.10 --dport 22 -j ACCEPT
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richard |
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rexy |
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# On autorise l'accès depuis Internet (multiports) vers un équipement du LAN (qui doit être en IP fixe)
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# Access is allowed from Internet (multiports) to a LAN equipment (which must be in static IP)
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#ext_ports=11223:11323; int_ports=11223:11323
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rexy |
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#to_ip=192.168.182.7
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rexy |
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#int_ports_dnat=`echo $int_ports|tr : -`
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#$IPTABLES -A PREROUTING -i $EXTIF -t nat -p tcp -d $PUBLIC_IP -m multiport --dports $ext_ports -j DNAT --to $to_ip:$int_ports_dnat
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rexy |
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#$IPTABLES -A FORWARD -i $EXTIF -p tcp -d $to_ip -m multiport --dports $ext_ports -j ACCEPT
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rexy |
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#$IPTABLES -A FORWARD -o $EXTIF -p tcp -s $to_ip -m multiport --sports $int_ports -j ACCEPT
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#$IPTABLES -A PREROUTING -i $EXTIF -t nat -p udp -d $PUBLIC_IP -m multiport --dports $ext_ports -j DNAT --to $to_ip:$int_ports_dnat
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#$IPTABLES -A FORWARD -i $EXTIF -p udp -d $to_ip -m multiport --dports $ext_ports -j ACCEPT
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#$IPTABLES -A FORWARD -o $EXTIF -p udp -s $to_ip -m multiport --sports $int_ports -j ACCEPT
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