[people/teissler/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 -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 IPSECNAT
	/sbin/iptables -t nat -A POSTROUTING -j IPSECNAT

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

	# 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

	# OPenSSL
	/sbin/iptables -N OPENSSLPHYSICAL
	/sbin/iptables -A INPUT -j OPENSSLPHYSICAL

	# 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

	# 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.  setdmzholes setuid prog adds rules here to allow
	# ORANGE to talk to GREEN / BLUE.
	/sbin/iptables -N DMZHOLES
	if [ "$ORANGE_DEV" != "" ]; then
		/sbin/iptables -A FORWARD -i $ORANGE_DEV -m state --state NEW -j DMZHOLES
	fi

	# XTACCESS chain, used for external access
	/sbin/iptables -N XTACCESS
	/sbin/iptables -A INPUT -m state --state NEW -j XTACCESS

	# PORTFWACCESS chain, used for portforwarding
	/sbin/iptables -N PORTFWACCESS
	/sbin/iptables -A FORWARD -m state --state NEW -j PORTFWACCESS

	# 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
	# This chain only contains dummy rules.
	/sbin/iptables -N 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 [ "$DROPINPUT" == "on" ]; then
		/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
	fi
	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
	if [ "$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
	# 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 [ "$DROPINPUT" == "on" ]; then
		/sbin/iptables -A INPUT   -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
	fi
	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
	if [ "$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

	# run local firewall configuration, if present
 	if [ -x /etc/sysconfig/firewall.local ]; then
		/etc/sysconfig/firewall.local reload
	fi
	;;
  restart)
	$0 stop
	$0 start
	;;
  *)
        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
3a1019f6 MT	156	/sbin/iptables -t nat -N CUSTOMPREROUTING
	157	/sbin/iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
	158	/sbin/iptables -t nat -N CUSTOMPOSTROUTING
	159	/sbin/iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING
	160
daa1ceba AF	161	# IPTV chains for IGMPPROXY
	162	/sbin/iptables -N IPTVINPUT
	163	/sbin/iptables -A INPUT -j IPTVINPUT
	164	/sbin/iptables -N IPTVFORWARD
	165	/sbin/iptables -A FORWARD -j IPTVFORWARD
	166
3a1019f6 MT	167	# filtering from GUI
	168	/sbin/iptables -N GUIINPUT
	169	/sbin/iptables -A INPUT -j GUIINPUT
905fbf3e	170	/sbin/iptables -A GUIINPUT -p icmp --icmp-type 8 -j ACCEPT
3a1019f6 MT	171
	172	# Accept everything connected
	173	/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	174	/sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
5fd30232 MT	175
5fd30232 MT	176	# trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
6652626c AF	177	/sbin/iptables -N IPSECINPUT
	178	/sbin/iptables -N IPSECFORWARD
	179	/sbin/iptables -N IPSECOUTPUT
5fd30232	180	/sbin/iptables -N OPENSSLVIRTUAL
6652626c	181	/sbin/iptables -A INPUT -j IPSECINPUT
5595bc03	182	/sbin/iptables -A INPUT -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL INPUT"
6652626c	183	/sbin/iptables -A FORWARD -j IPSECFORWARD
5595bc03	184	/sbin/iptables -A FORWARD -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL FORWARD"
6652626c	185	/sbin/iptables -A OUTPUT -j IPSECOUTPUT
c4cd0f7b AF	186	/sbin/iptables -t nat -N IPSECNAT
c4cd0f7b AF	187	/sbin/iptables -t nat -A POSTROUTING -j IPSECNAT
b68e5c14	188
4cb74dce	189	# Outgoing Firewall
d9716b06	190	/sbin/iptables -A FORWARD -j OUTGOINGFWMAC
3a1019f6 MT	191
3a1019f6 MT	192	# localhost and ethernet.
d8158ca6	193	/sbin/iptables -A INPUT -i lo -m state --state NEW -j ACCEPT
3a1019f6 MT	194	/sbin/iptables -A INPUT -s 127.0.0.0/8 -m state --state NEW -j DROP # Loopback not on lo
3a1019f6 MT	195	/sbin/iptables -A INPUT -d 127.0.0.0/8 -m state --state NEW -j DROP
cae0079c	196	/sbin/iptables -A FORWARD -i lo -m state --state NEW -j ACCEPT
3a1019f6 MT	197	/sbin/iptables -A FORWARD -s 127.0.0.0/8 -m state --state NEW -j DROP
3a1019f6 MT	198	/sbin/iptables -A FORWARD -d 127.0.0.0/8 -m state --state NEW -j DROP
dd79c399	199	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT ! -p icmp
3a1019f6 MT	200	/sbin/iptables -A FORWARD -i $GREEN_DEV -m state --state NEW -j ACCEPT
	201
	202	# If a host on orange tries to initiate a connection to IPFire's red IP and
	203	# the connection gets DNATed back through a port forward to a server on orange
	204	# we end up with orange -> orange traffic passing through IPFire
	205	[ "$ORANGE_DEV" != "" ] && /sbin/iptables -A FORWARD -i $ORANGE_DEV -o $ORANGE_DEV -m state --state NEW -j ACCEPT
	206
3a1019f6 MT	207	# allow DHCP on BLUE to be turned on/off
	208	/sbin/iptables -N DHCPBLUEINPUT
	209	/sbin/iptables -A INPUT -j DHCPBLUEINPUT
	210
5fd30232 MT	211	# OPenSSL
	212	/sbin/iptables -N OPENSSLPHYSICAL
	213	/sbin/iptables -A INPUT -j OPENSSLPHYSICAL
3a1019f6 MT	214
	215	# WIRELESS chains
	216	/sbin/iptables -N WIRELESSINPUT
	217	/sbin/iptables -A INPUT -m state --state NEW -j WIRELESSINPUT
	218	/sbin/iptables -N WIRELESSFORWARD
	219	/sbin/iptables -A FORWARD -m state --state NEW -j WIRELESSFORWARD
	220
	221	# RED chain, used for the red interface
	222	/sbin/iptables -N REDINPUT
	223	/sbin/iptables -A INPUT -j REDINPUT
	224	/sbin/iptables -N REDFORWARD
	225	/sbin/iptables -A FORWARD -j REDFORWARD
	226	/sbin/iptables -t nat -N REDNAT
	227	/sbin/iptables -t nat -A POSTROUTING -j REDNAT
	228
	229	iptables_red
	230
	231	# DMZ pinhole chain. setdmzholes setuid prog adds rules here to allow
	232	# ORANGE to talk to GREEN / BLUE.
	233	/sbin/iptables -N DMZHOLES
	234	if [ "$ORANGE_DEV" != "" ]; then
	235	/sbin/iptables -A FORWARD -i $ORANGE_DEV -m state --state NEW -j DMZHOLES
	236	fi
	237
	238	# XTACCESS chain, used for external access
	239	/sbin/iptables -N XTACCESS
	240	/sbin/iptables -A INPUT -m state --state NEW -j XTACCESS
	241
	242	# PORTFWACCESS chain, used for portforwarding
	243	/sbin/iptables -N PORTFWACCESS
	244	/sbin/iptables -A FORWARD -m state --state NEW -j PORTFWACCESS
	245
	246	# Custom prerouting chains (for transparent proxy and port forwarding)
	247	/sbin/iptables -t nat -N SQUID
	248	/sbin/iptables -t nat -A PREROUTING -j SQUID
	249	/sbin/iptables -t nat -N PORTFW
	250	/sbin/iptables -t nat -A PREROUTING -j PORTFW
	251
7e7495b3 MT	252	# upnp chain for our upnp daemon
	253	/sbin/iptables -t nat -N UPNPFW
	254	/sbin/iptables -t nat -A PREROUTING -j UPNPFW
54194ba4 MT	255	# This chain only contains dummy rules.
54194ba4 MT	256	/sbin/iptables -N UPNPFW
3a1019f6 MT	257
	258	# Custom mangle chain (for port fowarding)
	259	/sbin/iptables -t mangle -N PORTFWMANGLE
	260	/sbin/iptables -t mangle -A PREROUTING -j PORTFWMANGLE
	261
	262	# Postrouting rules (for port forwarding)
	263	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 1 -j SNAT \
	264	--to-source $GREEN_ADDRESS
	265	if [ "$BLUE_DEV" != "" ]; then
	266	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 2 -j SNAT --to-source $BLUE_ADDRESS
	267	fi
	268	if [ "$ORANGE_DEV" != "" ]; then
	269	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 3 -j SNAT --to-source $ORANGE_ADDRESS
	270	fi
	271
3a1019f6 MT	272	# run local firewall configuration, if present
	273	if [ -x /etc/sysconfig/firewall.local ]; then
	274	/etc/sysconfig/firewall.local start
	275	fi
	276
	277	# last rule in input and forward chain is for logging.
5595bc03 CS	278
5595bc03 CS	279	if [ "$DROPINPUT" == "on" ]; then
97fe1741	280	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
5595bc03	281	fi
97fe1741	282	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
5595bc03	283	if [ "$DROPOUTPUT" == "on" ]; then
97fe1741	284	/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
5595bc03	285	fi
97fe1741	286	/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
3a1019f6	287	;;
13211b21 CS	288	startovpn)
	289	# run openvpn
	290	/usr/local/bin/openvpnctrl --create-chains-and-rules
	291	;;
3a1019f6 MT	292	stop)
	293	iptables_init
	294	# Accept everyting connected
	295	/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	296
	297	# localhost and ethernet.
	298	/sbin/iptables -A INPUT -i lo -j ACCEPT
	299	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT
	300
	301	if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
	302	/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	303	/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	304	fi
	305	if [ "$PROTOCOL" == "RFC1483" -a "$METHOD" == "DHCP" ]; then
	306	/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	307	/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	308	fi
	309
3a1019f6 MT	310	# run local firewall configuration, if present
	311	if [ -x /etc/sysconfig/firewall.local ]; then
	312	/etc/sysconfig/firewall.local stop
	313	fi
	314
5595bc03	315	if [ "$DROPINPUT" == "on" ]; then
97fe1741	316	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
5595bc03	317	fi
97fe1741	318	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
5595bc03	319	if [ "$DROPOUTPUT" == "on" ]; then
97fe1741	320	/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
5595bc03	321	fi
97fe1741	322	/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
3a1019f6	323	;;
13211b21 CS	324	stopovpn)
	325	# stop openvpn
	326	/usr/local/bin/openvpnctrl --delete-chains-and-rules
	327	;;
3a1019f6 MT	328	reload)
	329	iptables_red
	330
	331	# run local firewall configuration, if present
	332	if [ -x /etc/sysconfig/firewall.local ]; then
	333	/etc/sysconfig/firewall.local reload
	334	fi
	335	;;
	336	restart)
	337	$0 stop
	338	$0 start
	339	;;
	340	*)
	341	echo "Usage: $0 {start\|stop\|reload\|restart}"
	342	exit 1
	343	;;
	344	esac
	345
	346	exit 0