[ipfire-2.x.git] / src / initscripts / init.d / firewall

#!/bin/sh

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
	DEVICE=`/bin/cat /var/ipfire/red/device 2> /dev/null | /usr/bin/tr -d '\012'`
fi

iptables_init() {
	# Flush all rules and delete all custom chains
	/sbin/iptables -F
	/sbin/iptables -t nat -F
	/sbin/iptables -t mangle -F
	/sbin/iptables -X
	/sbin/iptables -t nat -X
	/sbin/iptables -t mangle -X

	# Set up policies
	/sbin/iptables -P INPUT DROP
	/sbin/iptables -P FORWARD DROP
	/sbin/iptables -P OUTPUT ACCEPT

	# Empty LOG_DROP and LOG_REJECT chains
	/sbin/iptables -N LOG_DROP
	/sbin/iptables -A LOG_DROP   -m limit --limit 10/minute -j LOG
	/sbin/iptables -A LOG_DROP   -j DROP
	/sbin/iptables -N LOG_REJECT
	/sbin/iptables -A LOG_REJECT -m limit --limit 10/minute -j LOG
	/sbin/iptables -A LOG_REJECT -j REJECT

	# 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
	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
	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

	#Don't check loopback
	/sbin/iptables -A BADTCP -i lo -j RETURN

	# Disallow packets frequently used by port-scanners
	# nmap xmas
	/sbin/iptables -A BADTCP -p tcp --tcp-flags ALL FIN,URG,PSH  -j PSCAN
	# Null
	/sbin/iptables -A BADTCP -p tcp --tcp-flags ALL NONE -j PSCAN
	# FIN
	/sbin/iptables -A BADTCP -p tcp --tcp-flags ALL FIN -j PSCAN
	# SYN/RST (also catches xmas variants that set SYN+RST+...)
	/sbin/iptables -A BADTCP -p tcp --tcp-flags SYN,RST SYN,RST -j PSCAN
	# SYN/FIN (QueSO or nmap OS probe)
	/sbin/iptables -A BADTCP -p tcp --tcp-flags SYN,FIN SYN,FIN -j PSCAN
	# NEW TCP without SYN
	/sbin/iptables -A BADTCP -p tcp ! --syn -m state --state NEW -j NEWNOTSYN

	/sbin/iptables -A INPUT   -j BADTCP
	/sbin/iptables -A FORWARD -j BADTCP

}

iptables_red() {
	/sbin/iptables -F REDINPUT
	/sbin/iptables -F REDFORWARD
	/sbin/iptables -t nat -F REDNAT

	# PPPoE / PPTP Device
	if [ "$IFACE" != "" ]; then
		# PPPoE / PPTP
		if [ "$DEVICE" != "" ]; then
			/sbin/iptables -A REDINPUT -i $DEVICE -j ACCEPT
		fi
		if [ "$RED_TYPE" == "PPTP" -o "$RED_TYPE" == "PPPOE" ]; then
			if [ "$RED_DEV" != "" ]; then
				/sbin/iptables -A REDINPUT -i $RED_DEV -j ACCEPT
			fi
		fi
	fi

	# PPTP over DHCP
	if [ "$DEVICE" != "" -a "$TYPE" == "PPTP" -a "$METHOD" == "DHCP" ]; then
		/sbin/iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT
		/sbin/iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT
	fi

	# Orange pinholes
	if [ "$ORANGE_DEV" != "" ]; then
		# This rule enables a host on ORANGE network to connect to the outside
		# (only if we have a red connection)
		if [ "$IFACE" != "" ]; then
			/sbin/iptables -A REDFORWARD -i $ORANGE_DEV -o $IFACE -j ACCEPT
		fi
	fi

	if [ "$IFACE" != "" -a -f /var/ipfire/red/active ]; then
		# DHCP
		if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
			/sbin/iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
			/sbin/iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
		fi
		if [ "$METHOD" == "DHCP"  -a "$PROTOCOL" == "RFC1483" ]; then
			/sbin/iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
			/sbin/iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
		fi

		# Outgoing masquerading (don't masqerade IPSEC (mark 50))
		/sbin/iptables -t nat -A REDNAT -m mark --mark 50 -o $IFACE -j RETURN
		/sbin/iptables -t nat -A REDNAT -o $IFACE -j MASQUERADE

	fi
}

# See how we were called.
case "$1" in
  start)
	iptables_init

	# Limit Packets- helps reduce dos/syn attacks
	# original do nothing line
	#/sbin/iptables -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 10/sec
	# the correct one, but the negative '!' do nothing...
	#/sbin/iptables -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN ! -m limit --limit 10/sec -j DROP

	# Fix for braindead ISP's
	/sbin/iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu

	# CUSTOM chains, can be used by the users themselves
	/sbin/iptables -N CUSTOMINPUT
	/sbin/iptables -A INPUT -j CUSTOMINPUT
	/sbin/iptables -N GUARDIAN
	/sbin/iptables -A INPUT -j GUARDIAN
	/sbin/iptables -A FORWARD -j GUARDIAN
	/sbin/iptables -N CUSTOMFORWARD
	/sbin/iptables -A FORWARD -j CUSTOMFORWARD
	/sbin/iptables -N CUSTOMOUTPUT
	/sbin/iptables -A OUTPUT -j CUSTOMOUTPUT
	/sbin/iptables -N OUTGOINGFW
	/sbin/iptables -N OUTGOINGFWMAC
	/sbin/iptables -A OUTPUT -j OUTGOINGFW
	/sbin/iptables -A OUTGOINGFW -m state --state ESTABLISHED,RELATED -j ACCEPT
	/sbin/iptables -t nat -N CUSTOMPREROUTING
	/sbin/iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
	/sbin/iptables -t nat -N CUSTOMPOSTROUTING
	/sbin/iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING

	# IPTV chains for IGMPPROXY
	/sbin/iptables -N IPTVINPUT
	/sbin/iptables -A INPUT -j IPTVINPUT
	/sbin/iptables -N IPTVFORWARD
	/sbin/iptables -A FORWARD -j IPTVFORWARD

	# 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
	/sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
	
	# trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
	/sbin/iptables -N IPSECINPUT
	/sbin/iptables -N IPSECFORWARD
	/sbin/iptables -N IPSECOUTPUT
	/sbin/iptables -N OPENSSLVIRTUAL
	/sbin/iptables -A INPUT -j IPSECINPUT
	/sbin/iptables -A INPUT -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL INPUT"
	/sbin/iptables -A FORWARD -j IPSECFORWARD
	/sbin/iptables -A FORWARD -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL FORWARD"
	/sbin/iptables -A OUTPUT -j IPSECOUTPUT
	/sbin/iptables -t nat -N OVPNNAT
	/sbin/iptables -t nat -N IPSECNAT
	/sbin/iptables -t nat -A POSTROUTING -j OVPNNAT
	/sbin/iptables -t nat -A POSTROUTING -j IPSECNAT

	# TOR
	/sbin/iptables -N TOR_INPUT
	/sbin/iptables -A INPUT -j TOR_INPUT

	# Outgoing Firewall
	/sbin/iptables -A FORWARD -j OUTGOINGFWMAC

	# Forward Firewall
	/sbin/iptables -N FORWARDFW
	/sbin/iptables -A FORWARD -j FORWARDFW

	# Input Firewall
	/sbin/iptables -N INPUTFW
	/sbin/iptables -A INPUT -m state --state NEW -j INPUTFW

	# localhost and ethernet.
	/sbin/iptables -A INPUT   -i lo -m state --state NEW -j ACCEPT
	/sbin/iptables -A INPUT   -s 127.0.0.0/8 -m state --state NEW -j DROP   # Loopback not on lo
	/sbin/iptables -A INPUT   -d 127.0.0.0/8 -m state --state NEW -j DROP
	/sbin/iptables -A FORWARD -i lo -m state --state NEW -j ACCEPT
	/sbin/iptables -A FORWARD -s 127.0.0.0/8 -m state --state NEW -j DROP
	/sbin/iptables -A FORWARD -d 127.0.0.0/8 -m state --state NEW -j DROP
	/sbin/iptables -A INPUT   -i $GREEN_DEV  -m state --state NEW -j ACCEPT ! -p icmp
	#/sbin/iptables -A FORWARD -i $GREEN_DEV  -m state --state NEW -j ACCEPT

	# If a host on orange tries to initiate a connection to IPFire's red IP and
	# the connection gets DNATed back through a port forward to a server on orange
	# we end up with orange -> orange traffic passing through IPFire
	[ "$ORANGE_DEV" != "" ] && /sbin/iptables -A FORWARD -i $ORANGE_DEV -o $ORANGE_DEV -m state --state NEW -j ACCEPT

	# allow DHCP on BLUE to be turned on/off
	/sbin/iptables -N DHCPBLUEINPUT 
	/sbin/iptables -A INPUT -j DHCPBLUEINPUT
	
	# WIRELESS chains
	/sbin/iptables -N WIRELESSINPUT
	/sbin/iptables -A INPUT -m state --state NEW -j WIRELESSINPUT
	/sbin/iptables -N WIRELESSFORWARD
	/sbin/iptables -A FORWARD -m state --state NEW -j WIRELESSFORWARD
	
	# PORTFWACCESS chain, used for portforwarding
	/sbin/iptables -N PORTFWACCESS
	/sbin/iptables -A FORWARD -m state --state NEW -j PORTFWACCESS
	
	# OPenSSL
	/sbin/iptables -N OPENSSLPHYSICAL
	/sbin/iptables -A INPUT -j OPENSSLPHYSICAL

	# RED chain, used for the red interface
	/sbin/iptables -N REDINPUT
	/sbin/iptables -A INPUT -j REDINPUT
	/sbin/iptables -N REDFORWARD
	/sbin/iptables -A FORWARD -j REDFORWARD
	/sbin/iptables -t nat -N REDNAT
	/sbin/iptables -t nat -A POSTROUTING -j REDNAT

	iptables_red
	
	# DMZ pinhole chain.  
	# ORANGE to talk to GREEN / BLUE.
	if [ "$ORANGE_DEV" != "" ]; then
		/sbin/iptables -A FORWARD -i $ORANGE_DEV -m state --state NEW -j FORWARDFW
	fi
	
	# Custom prerouting chains (for transparent proxy and port forwarding)
	/sbin/iptables -t nat -N SQUID
	/sbin/iptables -t nat -A PREROUTING -j SQUID
	/sbin/iptables -t nat -N PORTFW
	/sbin/iptables -t nat -A PREROUTING -j PORTFW

	# upnp chain for our upnp daemon
	/sbin/iptables -t nat -N UPNPFW
	/sbin/iptables -t nat -A PREROUTING -j UPNPFW
	/sbin/iptables -N UPNPFW
	/sbin/iptables -A FORWARD -m state --state NEW -j UPNPFW

	# Custom mangle chain (for port fowarding)
	/sbin/iptables -t mangle -N PORTFWMANGLE
	/sbin/iptables -t mangle -A PREROUTING -j PORTFWMANGLE

	# Postrouting rules (for port forwarding)
	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 1 -j SNAT \
	 --to-source $GREEN_ADDRESS
	if [ "$BLUE_DEV" != "" ]; then
		/sbin/iptables -t nat -A POSTROUTING -m mark --mark 2 -j SNAT --to-source $BLUE_ADDRESS
	fi
	if [ "$ORANGE_DEV" != "" ]; then
		/sbin/iptables -t nat -A POSTROUTING -m mark --mark 3 -j SNAT --to-source $ORANGE_ADDRESS
	fi

	# 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.

	if [ "$DROPINPUT" == "on" ]; then
		/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
	fi
	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
	#if [ "$DROPFORWARD" == "on" ]; then
	#	/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD "
	#fi
	#/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_FORWARD"
	
	#POLICY CHAIN
	/sbin/iptables -N POLICYFWD
	/sbin/iptables -A FORWARD -j POLICYFWD
	/sbin/iptables -N POLICYOUT
	/sbin/iptables -A OUTPUT -j POLICYOUT
	
	
	/usr/sbin/firewall-policy
	;;
  startovpn)  
	# run openvpn
	/usr/local/bin/openvpnctrl --create-chains-and-rules
        ;;
  stop)
	iptables_init
	# Accept everyting connected
	/sbin/iptables -A INPUT   -m state --state ESTABLISHED,RELATED -j ACCEPT

	# localhost and ethernet.
	/sbin/iptables -A INPUT -i lo -j ACCEPT
	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT

	if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
		/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
		/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	fi
	if [ "$PROTOCOL" == "RFC1483" -a "$METHOD" == "DHCP" ]; then
		/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
		/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	fi

	# run local firewall configuration, if present
 	if [ -x /etc/sysconfig/firewall.local ]; then
		/etc/sysconfig/firewall.local stop
	fi

	if [ "$DROPINPUT" == "on" ]; then
		/sbin/iptables -A INPUT   -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
	fi
	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
	if [ "$DROPFORWARD" == "on" ]; then
		/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD "
	fi
	/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_FORWARD"
	;;
  stopovpn)
	# stop openvpn
	/usr/local/bin/openvpnctrl --delete-chains-and-rules
        ;;
  reload)
	iptables_red

	# run local firewall configuration, if present
 	if [ -x /etc/sysconfig/firewall.local ]; then
		/etc/sysconfig/firewall.local reload
	fi
	;;
  restart)
	$0 stop
	$0 start
	/usr/local/bin/forwardfwctrl
	/usr/local/bin/setportfw
	/usr/local/bin/openvpnctrl -s > /dev/null 2>&1
	/usr/local/bin/openvpnctrl -sn2n > /dev/null 2>&1
	;;
  *)
        echo "Usage: $0 {start|stop|reload|restart}"
        exit 1
	;;
esac

exit 0
Commit	Line	Data
3a1019f6 MT	1	#!/bin/sh
	2
	3	eval $(/usr/local/bin/readhash /var/ipfire/ppp/settings)
	4	eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
fe0cd647	5	eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings)
3a1019f6 MT	6	IFACE=`/bin/cat /var/ipfire/red/iface 2> /dev/null \| /usr/bin/tr -d '\012'`
	7
	8	if [ -f /var/ipfire/red/device ]; then
	9	DEVICE=`/bin/cat /var/ipfire/red/device 2> /dev/null \| /usr/bin/tr -d '\012'`
	10	fi
	11
	12	iptables_init() {
	13	# Flush all rules and delete all custom chains
	14	/sbin/iptables -F
	15	/sbin/iptables -t nat -F
	16	/sbin/iptables -t mangle -F
	17	/sbin/iptables -X
	18	/sbin/iptables -t nat -X
	19	/sbin/iptables -t mangle -X
	20
	21	# Set up policies
	22	/sbin/iptables -P INPUT DROP
	23	/sbin/iptables -P FORWARD DROP
	24	/sbin/iptables -P OUTPUT ACCEPT
	25
	26	# Empty LOG_DROP and LOG_REJECT chains
	27	/sbin/iptables -N LOG_DROP
	28	/sbin/iptables -A LOG_DROP -m limit --limit 10/minute -j LOG
	29	/sbin/iptables -A LOG_DROP -j DROP
	30	/sbin/iptables -N LOG_REJECT
	31	/sbin/iptables -A LOG_REJECT -m limit --limit 10/minute -j LOG
	32	/sbin/iptables -A LOG_REJECT -j REJECT
	33
	34	# This chain will log, then DROPs packets with certain bad combinations
	35	# of flags might indicate a port-scan attempt (xmas, null, etc)
	36	/sbin/iptables -N PSCAN
5595bc03	37	if [ "$DROPPORTSCAN" == "on" ]; then
97fe1741	38	/sbin/iptables -A PSCAN -p tcp -m limit --limit 10/minute -j LOG --log-prefix "DROP_TCP Scan " -m comment --comment "DROP_TCP PScan"
fe0cd647	39	/sbin/iptables -A PSCAN -p udp -m limit --limit 10/minute -j LOG --log-prefix "DROP_UDP Scan " -m comment --comment "DROP_UDP PScan"
97fe1741 CS	40	/sbin/iptables -A PSCAN -p icmp -m limit --limit 10/minute -j LOG --log-prefix "DROP_ICMP Scan " -m comment --comment "DROP_ICMP PScan"
97fe1741 CS	41	/sbin/iptables -A PSCAN -f -m limit --limit 10/minute -j LOG --log-prefix "DROP_FRAG Scan " -m comment --comment "DROP_FRAG PScan"
5595bc03	42	fi
97fe1741	43	/sbin/iptables -A PSCAN -j DROP -m comment --comment "DROP_PScan"
3a1019f6 MT	44
	45	# New tcp packets without SYN set - could well be an obscure type of port scan
	46	# that's not covered above, may just be a broken windows machine
	47	/sbin/iptables -N NEWNOTSYN
5595bc03	48	if [ "$DROPNEWNOTSYN" == "on" ]; then
97fe1741	49	/sbin/iptables -A NEWNOTSYN -m limit --limit 10/minute -j LOG --log-prefix "DROP_NEWNOTSYN "
5595bc03	50	fi
97fe1741	51	/sbin/iptables -A NEWNOTSYN -j DROP -m comment --comment "DROP_NEWNOTSYN"
3a1019f6 MT	52
	53	# Chain to contain all the rules relating to bad TCP flags
	54	/sbin/iptables -N BADTCP
	55
d8158ca6	56	#Don't check loopback
a56df4ee	57	/sbin/iptables -A BADTCP -i lo -j RETURN
d8158ca6	58
3a1019f6 MT	59	# Disallow packets frequently used by port-scanners
	60	# nmap xmas
	61	/sbin/iptables -A BADTCP -p tcp --tcp-flags ALL FIN,URG,PSH -j PSCAN
	62	# Null
	63	/sbin/iptables -A BADTCP -p tcp --tcp-flags ALL NONE -j PSCAN
	64	# FIN
	65	/sbin/iptables -A BADTCP -p tcp --tcp-flags ALL FIN -j PSCAN
	66	# SYN/RST (also catches xmas variants that set SYN+RST+...)
	67	/sbin/iptables -A BADTCP -p tcp --tcp-flags SYN,RST SYN,RST -j PSCAN
	68	# SYN/FIN (QueSO or nmap OS probe)
	69	/sbin/iptables -A BADTCP -p tcp --tcp-flags SYN,FIN SYN,FIN -j PSCAN
	70	# NEW TCP without SYN
	71	/sbin/iptables -A BADTCP -p tcp ! --syn -m state --state NEW -j NEWNOTSYN
	72
	73	/sbin/iptables -A INPUT -j BADTCP
	74	/sbin/iptables -A FORWARD -j BADTCP
	75
	76	}
	77
	78	iptables_red() {
	79	/sbin/iptables -F REDINPUT
	80	/sbin/iptables -F REDFORWARD
	81	/sbin/iptables -t nat -F REDNAT
	82
	83	# PPPoE / PPTP Device
	84	if [ "$IFACE" != "" ]; then
	85	# PPPoE / PPTP
	86	if [ "$DEVICE" != "" ]; then
	87	/sbin/iptables -A REDINPUT -i $DEVICE -j ACCEPT
	88	fi
	89	if [ "$RED_TYPE" == "PPTP" -o "$RED_TYPE" == "PPPOE" ]; then
	90	if [ "$RED_DEV" != "" ]; then
	91	/sbin/iptables -A REDINPUT -i $RED_DEV -j ACCEPT
	92	fi
	93	fi
	94	fi
	95
	96	# PPTP over DHCP
	97	if [ "$DEVICE" != "" -a "$TYPE" == "PPTP" -a "$METHOD" == "DHCP" ]; then
	98	/sbin/iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT
	99	/sbin/iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT
	100	fi
	101
	102	# Orange pinholes
	103	if [ "$ORANGE_DEV" != "" ]; then
	104	# This rule enables a host on ORANGE network to connect to the outside
	105	# (only if we have a red connection)
	106	if [ "$IFACE" != "" ]; then
139a9b4f	107	/sbin/iptables -A REDFORWARD -i $ORANGE_DEV -o $IFACE -j ACCEPT
3a1019f6 MT	108	fi
	109	fi
	110
	111	if [ "$IFACE" != "" -a -f /var/ipfire/red/active ]; then
	112	# DHCP
	113	if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
	114	/sbin/iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	115	/sbin/iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	116	fi
	117	if [ "$METHOD" == "DHCP" -a "$PROTOCOL" == "RFC1483" ]; then
	118	/sbin/iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	119	/sbin/iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	120	fi
	121
db073a10 AF	122	# Outgoing masquerading (don't masqerade IPSEC (mark 50))
db073a10 AF	123	/sbin/iptables -t nat -A REDNAT -m mark --mark 50 -o $IFACE -j RETURN
3a1019f6 MT	124	/sbin/iptables -t nat -A REDNAT -o $IFACE -j MASQUERADE
	125
	126	fi
	127	}
	128
	129	# See how we were called.
	130	case "$1" in
	131	start)
	132	iptables_init
	133
	134	# Limit Packets- helps reduce dos/syn attacks
	135	# original do nothing line
	136	#/sbin/iptables -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 10/sec
	137	# the correct one, but the negative '!' do nothing...
9efdd899	138	#/sbin/iptables -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN ! -m limit --limit 10/sec -j DROP
3a1019f6 MT	139
	140	# Fix for braindead ISP's
	141	/sbin/iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
	142
	143	# CUSTOM chains, can be used by the users themselves
	144	/sbin/iptables -N CUSTOMINPUT
	145	/sbin/iptables -A INPUT -j CUSTOMINPUT
057249ba CS	146	/sbin/iptables -N GUARDIAN
	147	/sbin/iptables -A INPUT -j GUARDIAN
	148	/sbin/iptables -A FORWARD -j GUARDIAN
3a1019f6 MT	149	/sbin/iptables -N CUSTOMFORWARD
	150	/sbin/iptables -A FORWARD -j CUSTOMFORWARD
	151	/sbin/iptables -N CUSTOMOUTPUT
	152	/sbin/iptables -A OUTPUT -j CUSTOMOUTPUT
4cb74dce	153	/sbin/iptables -N OUTGOINGFW
d9716b06	154	/sbin/iptables -N OUTGOINGFWMAC
4cb74dce	155	/sbin/iptables -A OUTPUT -j OUTGOINGFW
5d7faa45	156	/sbin/iptables -A OUTGOINGFW -m state --state ESTABLISHED,RELATED -j ACCEPT
3a1019f6 MT	157	/sbin/iptables -t nat -N CUSTOMPREROUTING
	158	/sbin/iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
	159	/sbin/iptables -t nat -N CUSTOMPOSTROUTING
	160	/sbin/iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING
	161
daa1ceba AF	162	# IPTV chains for IGMPPROXY
	163	/sbin/iptables -N IPTVINPUT
	164	/sbin/iptables -A INPUT -j IPTVINPUT
	165	/sbin/iptables -N IPTVFORWARD
	166	/sbin/iptables -A FORWARD -j IPTVFORWARD
	167
3a1019f6 MT	168	# filtering from GUI
	169	/sbin/iptables -N GUIINPUT
	170	/sbin/iptables -A INPUT -j GUIINPUT
905fbf3e	171	/sbin/iptables -A GUIINPUT -p icmp --icmp-type 8 -j ACCEPT
3a1019f6 MT	172
	173	# Accept everything connected
	174	/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	175	/sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
5fd30232 MT	176
5fd30232 MT	177	# trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
6652626c AF	178	/sbin/iptables -N IPSECINPUT
	179	/sbin/iptables -N IPSECFORWARD
	180	/sbin/iptables -N IPSECOUTPUT
5fd30232	181	/sbin/iptables -N OPENSSLVIRTUAL
6652626c	182	/sbin/iptables -A INPUT -j IPSECINPUT
5595bc03	183	/sbin/iptables -A INPUT -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL INPUT"
6652626c	184	/sbin/iptables -A FORWARD -j IPSECFORWARD
5595bc03	185	/sbin/iptables -A FORWARD -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL FORWARD"
6652626c	186	/sbin/iptables -A OUTPUT -j IPSECOUTPUT
fcbf5eef	187	/sbin/iptables -t nat -N OVPNNAT
c4cd0f7b	188	/sbin/iptables -t nat -N IPSECNAT
b2e333d4	189	/sbin/iptables -t nat -A POSTROUTING -j OVPNNAT
c4cd0f7b	190	/sbin/iptables -t nat -A POSTROUTING -j IPSECNAT
b68e5c14	191
c60301c0 MT	192	# TOR
	193	/sbin/iptables -N TOR_INPUT
	194	/sbin/iptables -A INPUT -j TOR_INPUT
	195
4cb74dce	196	# Outgoing Firewall
d9716b06	197	/sbin/iptables -A FORWARD -j OUTGOINGFWMAC
3a1019f6	198
231499fc AM	199	# Forward Firewall
	200	/sbin/iptables -N FORWARDFW
	201	/sbin/iptables -A FORWARD -j FORWARDFW
	202
	203	# Input Firewall
	204	/sbin/iptables -N INPUTFW
	205	/sbin/iptables -A INPUT -m state --state NEW -j INPUTFW
	206
3a1019f6	207	# localhost and ethernet.
d8158ca6	208	/sbin/iptables -A INPUT -i lo -m state --state NEW -j ACCEPT
3a1019f6 MT	209	/sbin/iptables -A INPUT -s 127.0.0.0/8 -m state --state NEW -j DROP # Loopback not on lo
3a1019f6 MT	210	/sbin/iptables -A INPUT -d 127.0.0.0/8 -m state --state NEW -j DROP
cae0079c	211	/sbin/iptables -A FORWARD -i lo -m state --state NEW -j ACCEPT
3a1019f6 MT	212	/sbin/iptables -A FORWARD -s 127.0.0.0/8 -m state --state NEW -j DROP
3a1019f6 MT	213	/sbin/iptables -A FORWARD -d 127.0.0.0/8 -m state --state NEW -j DROP
dd79c399	214	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT ! -p icmp
12dcfbbd	215	#/sbin/iptables -A FORWARD -i $GREEN_DEV -m state --state NEW -j ACCEPT
3a1019f6 MT	216
	217	# If a host on orange tries to initiate a connection to IPFire's red IP and
	218	# the connection gets DNATed back through a port forward to a server on orange
	219	# we end up with orange -> orange traffic passing through IPFire
	220	[ "$ORANGE_DEV" != "" ] && /sbin/iptables -A FORWARD -i $ORANGE_DEV -o $ORANGE_DEV -m state --state NEW -j ACCEPT
	221
3a1019f6 MT	222	# allow DHCP on BLUE to be turned on/off
	223	/sbin/iptables -N DHCPBLUEINPUT
	224	/sbin/iptables -A INPUT -j DHCPBLUEINPUT
81393987 AM	225
	226	# WIRELESS chains
	227	/sbin/iptables -N WIRELESSINPUT
	228	/sbin/iptables -A INPUT -m state --state NEW -j WIRELESSINPUT
	229	/sbin/iptables -N WIRELESSFORWARD
8dc23ff4	230	/sbin/iptables -A FORWARD -m state --state NEW -j WIRELESSFORWARD
12dcfbbd AM	231
	232	# PORTFWACCESS chain, used for portforwarding
	233	/sbin/iptables -N PORTFWACCESS
	234	/sbin/iptables -A FORWARD -m state --state NEW -j PORTFWACCESS
	235
5fd30232 MT	236	# OPenSSL
	237	/sbin/iptables -N OPENSSLPHYSICAL
	238	/sbin/iptables -A INPUT -j OPENSSLPHYSICAL
3a1019f6	239
3a1019f6 MT	240	# RED chain, used for the red interface
	241	/sbin/iptables -N REDINPUT
	242	/sbin/iptables -A INPUT -j REDINPUT
	243	/sbin/iptables -N REDFORWARD
	244	/sbin/iptables -A FORWARD -j REDFORWARD
	245	/sbin/iptables -t nat -N REDNAT
	246	/sbin/iptables -t nat -A POSTROUTING -j REDNAT
	247
	248	iptables_red
e44fa079	249
d6bdebd4	250	# DMZ pinhole chain.
e44fa079	251	# ORANGE to talk to GREEN / BLUE.
e44fa079 AM	252	if [ "$ORANGE_DEV" != "" ]; then
	253	/sbin/iptables -A FORWARD -i $ORANGE_DEV -m state --state NEW -j FORWARDFW
	254	fi
	255
3a1019f6 MT	256	# Custom prerouting chains (for transparent proxy and port forwarding)
	257	/sbin/iptables -t nat -N SQUID
	258	/sbin/iptables -t nat -A PREROUTING -j SQUID
	259	/sbin/iptables -t nat -N PORTFW
	260	/sbin/iptables -t nat -A PREROUTING -j PORTFW
	261
7e7495b3 MT	262	# upnp chain for our upnp daemon
	263	/sbin/iptables -t nat -N UPNPFW
	264	/sbin/iptables -t nat -A PREROUTING -j UPNPFW
54194ba4	265	/sbin/iptables -N UPNPFW
42cb3860	266	/sbin/iptables -A FORWARD -m state --state NEW -j UPNPFW
3a1019f6 MT	267
	268	# Custom mangle chain (for port fowarding)
	269	/sbin/iptables -t mangle -N PORTFWMANGLE
	270	/sbin/iptables -t mangle -A PREROUTING -j PORTFWMANGLE
	271
	272	# Postrouting rules (for port forwarding)
	273	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 1 -j SNAT \
	274	--to-source $GREEN_ADDRESS
	275	if [ "$BLUE_DEV" != "" ]; then
	276	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 2 -j SNAT --to-source $BLUE_ADDRESS
	277	fi
	278	if [ "$ORANGE_DEV" != "" ]; then
	279	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 3 -j SNAT --to-source $ORANGE_ADDRESS
	280	fi
	281
3a1019f6 MT	282	# run local firewall configuration, if present
	283	if [ -x /etc/sysconfig/firewall.local ]; then
	284	/etc/sysconfig/firewall.local start
	285	fi
	286
	287	# last rule in input and forward chain is for logging.
5595bc03 CS	288
5595bc03 CS	289	if [ "$DROPINPUT" == "on" ]; then
97fe1741	290	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
5595bc03	291	fi
97fe1741	292	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
62fc8511 AM	293	#if [ "$DROPFORWARD" == "on" ]; then
	294	# /sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD "
	295	#fi
	296	#/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_FORWARD"
	297
	298	#POLICY CHAIN
5d7faa45 AM	299	/sbin/iptables -N POLICYFWD
	300	/sbin/iptables -A FORWARD -j POLICYFWD
	301	/sbin/iptables -N POLICYOUT
	302	/sbin/iptables -A OUTPUT -j POLICYOUT
6be0579b	303
5d7faa45 AM	304
5d7faa45 AM	305	/usr/sbin/firewall-policy
fd10a52c	306	;;
13211b21 CS	307	startovpn)
	308	# run openvpn
	309	/usr/local/bin/openvpnctrl --create-chains-and-rules
	310	;;
3a1019f6 MT	311	stop)
	312	iptables_init
	313	# Accept everyting connected
	314	/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	315
	316	# localhost and ethernet.
	317	/sbin/iptables -A INPUT -i lo -j ACCEPT
	318	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT
	319
	320	if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
	321	/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	322	/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	323	fi
	324	if [ "$PROTOCOL" == "RFC1483" -a "$METHOD" == "DHCP" ]; then
	325	/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	326	/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	327	fi
	328
3a1019f6 MT	329	# run local firewall configuration, if present
	330	if [ -x /etc/sysconfig/firewall.local ]; then
	331	/etc/sysconfig/firewall.local stop
	332	fi
	333
5595bc03	334	if [ "$DROPINPUT" == "on" ]; then
97fe1741	335	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
5595bc03	336	fi
97fe1741	337	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
6be0579b	338	if [ "$DROPFORWARD" == "on" ]; then
62fc8511	339	/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD "
6be0579b	340	fi
62fc8511	341	/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_FORWARD"
6be0579b	342	;;
13211b21 CS	343	stopovpn)
	344	# stop openvpn
	345	/usr/local/bin/openvpnctrl --delete-chains-and-rules
	346	;;
3a1019f6 MT	347	reload)
	348	iptables_red
	349
	350	# run local firewall configuration, if present
	351	if [ -x /etc/sysconfig/firewall.local ]; then
	352	/etc/sysconfig/firewall.local reload
	353	fi
	354	;;
	355	restart)
	356	$0 stop
	357	$0 start
210ee67b	358	/usr/local/bin/forwardfwctrl
6adcf156	359	/usr/local/bin/setportfw
210ee67b AM	360	/usr/local/bin/openvpnctrl -s > /dev/null 2>&1
210ee67b AM	361	/usr/local/bin/openvpnctrl -sn2n > /dev/null 2>&1
3a1019f6 MT	362	;;
	363	*)
	364	echo "Usage: $0 {start\|stop\|reload\|restart}"
	365	exit 1
	366	;;
	367	esac
	368
	369	exit 0