eval $(/usr/local/bin/readhash /var/ipfire/ppp/settings)
eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
+eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings)
IFACE=`/bin/cat /var/ipfire/red/iface 2> /dev/null | /usr/bin/tr -d '\012'`
if [ -f /var/ipfire/red/device ]; then
# This chain will log, then DROPs packets with certain bad combinations
# of flags might indicate a port-scan attempt (xmas, null, etc)
/sbin/iptables -N PSCAN
- /sbin/iptables -A PSCAN -p tcp -m limit --limit 10/minute -j LOG --log-prefix "TCP Scan? "
- /sbin/iptables -A PSCAN -p udp -m limit --limit 10/minute -j LOG --log-prefix "UDP Scan? "
- /sbin/iptables -A PSCAN -p icmp -m limit --limit 10/minute -j LOG --log-prefix "ICMP Scan? "
- /sbin/iptables -A PSCAN -f -m limit --limit 10/minute -j LOG --log-prefix "FRAG Scan? "
- /sbin/iptables -A PSCAN -j DROP
+ if [ "$DROPPORTSCAN" == "on" ]; then
+ /sbin/iptables -A PSCAN -p tcp -m limit --limit 10/minute -j LOG --log-prefix "DROP_TCP Scan " -m comment --comment "DROP_TCP PScan"
+ /sbin/iptables -A PSCAN -p udp -m limit --limit 10/minute -j LOG --log-prefix "DROP_UDP Scan " -m comment --comment "DROP_UDP PScan"
+ /sbin/iptables -A PSCAN -p icmp -m limit --limit 10/minute -j LOG --log-prefix "DROP_ICMP Scan " -m comment --comment "DROP_ICMP PScan"
+ /sbin/iptables -A PSCAN -f -m limit --limit 10/minute -j LOG --log-prefix "DROP_FRAG Scan " -m comment --comment "DROP_FRAG PScan"
+ fi
+ /sbin/iptables -A PSCAN -j DROP -m comment --comment "DROP_PScan"
# New tcp packets without SYN set - could well be an obscure type of port scan
# that's not covered above, may just be a broken windows machine
/sbin/iptables -N NEWNOTSYN
- /sbin/iptables -A NEWNOTSYN -m limit --limit 10/minute -j LOG --log-prefix "NEW not SYN? "
- /sbin/iptables -A NEWNOTSYN -j DROP
+ if [ "$DROPNEWNOTSYN" == "on" ]; then
+ /sbin/iptables -A NEWNOTSYN -m limit --limit 10/minute -j LOG --log-prefix "DROP_NEWNOTSYN "
+ fi
+ /sbin/iptables -A NEWNOTSYN -j DROP -m comment --comment "DROP_NEWNOTSYN"
# Chain to contain all the rules relating to bad TCP flags
/sbin/iptables -N BADTCP
/sbin/iptables -A FORWARD -j CUSTOMFORWARD
/sbin/iptables -N CUSTOMOUTPUT
/sbin/iptables -A OUTPUT -j CUSTOMOUTPUT
+ /sbin/iptables -N OUTGOINGFW
+ /sbin/iptables -A OUTPUT -j OUTGOINGFW
/sbin/iptables -t nat -N CUSTOMPREROUTING
/sbin/iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
/sbin/iptables -t nat -N CUSTOMPOSTROUTING
# filtering from GUI
/sbin/iptables -N GUIINPUT
/sbin/iptables -A INPUT -j GUIINPUT
+ /sbin/iptables -A GUIINPUT -p icmp --icmp-type 8 -j ACCEPT
# Accept everything connected
/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
# trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
/sbin/iptables -N IPSECVIRTUAL
/sbin/iptables -N OPENSSLVIRTUAL
- /sbin/iptables -A INPUT -j IPSECVIRTUAL
- /sbin/iptables -A INPUT -j OPENSSLVIRTUAL
- /sbin/iptables -A FORWARD -j IPSECVIRTUAL
- /sbin/iptables -A FORWARD -j OPENSSLVIRTUAL
+ /sbin/iptables -A INPUT -j IPSECVIRTUAL -m comment --comment "IPSECVIRTUAL INPUT"
+ /sbin/iptables -A INPUT -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL INPUT"
+ /sbin/iptables -A FORWARD -j IPSECVIRTUAL -m comment --comment "IPSECVIRTUAL FORWARD"
+ /sbin/iptables -A FORWARD -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL FORWARD"
+ /sbin/iptables -t nat -N IPSECNAT
+ /sbin/iptables -t nat -A POSTROUTING -j IPSECNAT
+
+ # Outgoing Firewall
+ /sbin/iptables -A FORWARD -j OUTGOINGFW
# localhost and ethernet.
/sbin/iptables -A INPUT -i lo -m state --state NEW -j ACCEPT
/sbin/iptables -t nat -A POSTROUTING -m mark --mark 3 -j SNAT --to-source $ORANGE_ADDRESS
fi
- # run openvpn
- /usr/local/bin/openvpnctrl --create-chains-and-rules
-
# run local firewall configuration, if present
if [ -x /etc/sysconfig/firewall.local ]; then
/etc/sysconfig/firewall.local start
fi
# last rule in input and forward chain is for logging.
- /sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "INPUT "
- /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "OUTPUT "
+
+ if [ "$DROPINPUT" == "on" ]; then
+ /sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
+ fi
+ /sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
+ if [ "$DROPOUTPUT" == "on" ]; then
+ /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
+ fi
+ /sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
+ ;;
+ startovpn)
+ # run openvpn
+ /usr/local/bin/openvpnctrl --create-chains-and-rules
;;
stop)
iptables_init
/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
fi
- # stop openvpn
- /usr/local/bin/openvpnctrl --delete-chains-and-rules
-
# run local firewall configuration, if present
if [ -x /etc/sysconfig/firewall.local ]; then
/etc/sysconfig/firewall.local stop
fi
- /sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "INPUT "
- /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "OUTPUT "
+ if [ "$DROPINPUT" == "on" ]; then
+ /sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
+ fi
+ /sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
+ if [ "$DROPOUTPUT" == "on" ]; then
+ /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
+ fi
+ /sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
+ ;;
+ stopovpn)
+ # stop openvpn
+ /usr/local/bin/openvpnctrl --delete-chains-and-rules
;;
reload)
iptables_red