[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

	# 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 GUARDIANINPUT
	/sbin/iptables -A INPUT -j GUARDIANINPUT
	/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 -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 OUTGOINGFW

	# 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


	# 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 [ "$DROPNEWNOTSYN" == "on" ]; then
97fe1741	49	/sbin/iptables -A NEWNOTSYN -m limit --limit 10/minute -j LOG --log-prefix "DROP_NEWNOTSYN "
5595bc03	50	fi
97fe1741	51	/sbin/iptables -A NEWNOTSYN -j DROP -m comment --comment "DROP_NEWNOTSYN"
3a1019f6 MT	52
	53	# Chain to contain all the rules relating to bad TCP flags
	54	/sbin/iptables -N BADTCP
	55
	56	# Disallow packets frequently used by port-scanners
	57	# nmap xmas
	58	/sbin/iptables -A BADTCP -p tcp --tcp-flags ALL FIN,URG,PSH -j PSCAN
	59	# Null
	60	/sbin/iptables -A BADTCP -p tcp --tcp-flags ALL NONE -j PSCAN
	61	# FIN
	62	/sbin/iptables -A BADTCP -p tcp --tcp-flags ALL FIN -j PSCAN
	63	# SYN/RST (also catches xmas variants that set SYN+RST+...)
	64	/sbin/iptables -A BADTCP -p tcp --tcp-flags SYN,RST SYN,RST -j PSCAN
	65	# SYN/FIN (QueSO or nmap OS probe)
	66	/sbin/iptables -A BADTCP -p tcp --tcp-flags SYN,FIN SYN,FIN -j PSCAN
	67	# NEW TCP without SYN
	68	/sbin/iptables -A BADTCP -p tcp ! --syn -m state --state NEW -j NEWNOTSYN
	69
	70	/sbin/iptables -A INPUT -j BADTCP
	71	/sbin/iptables -A FORWARD -j BADTCP
	72
	73	}
	74
	75	iptables_red() {
	76	/sbin/iptables -F REDINPUT
	77	/sbin/iptables -F REDFORWARD
	78	/sbin/iptables -t nat -F REDNAT
	79
	80	# PPPoE / PPTP Device
	81	if [ "$IFACE" != "" ]; then
	82	# PPPoE / PPTP
	83	if [ "$DEVICE" != "" ]; then
	84	/sbin/iptables -A REDINPUT -i $DEVICE -j ACCEPT
	85	fi
	86	if [ "$RED_TYPE" == "PPTP" -o "$RED_TYPE" == "PPPOE" ]; then
	87	if [ "$RED_DEV" != "" ]; then
	88	/sbin/iptables -A REDINPUT -i $RED_DEV -j ACCEPT
	89	fi
	90	fi
	91	fi
	92
	93	# PPTP over DHCP
	94	if [ "$DEVICE" != "" -a "$TYPE" == "PPTP" -a "$METHOD" == "DHCP" ]; then
	95	/sbin/iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT
	96	/sbin/iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT
	97	fi
	98
	99	# Orange pinholes
	100	if [ "$ORANGE_DEV" != "" ]; then
	101	# This rule enables a host on ORANGE network to connect to the outside
	102	# (only if we have a red connection)
	103	if [ "$IFACE" != "" ]; then
139a9b4f	104	/sbin/iptables -A REDFORWARD -i $ORANGE_DEV -o $IFACE -j ACCEPT
3a1019f6 MT	105	fi
	106	fi
	107
	108	if [ "$IFACE" != "" -a -f /var/ipfire/red/active ]; then
	109	# DHCP
	110	if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
	111	/sbin/iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	112	/sbin/iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	113	fi
	114	if [ "$METHOD" == "DHCP" -a "$PROTOCOL" == "RFC1483" ]; then
	115	/sbin/iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	116	/sbin/iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	117	fi
	118
db073a10 AF	119	# Outgoing masquerading (don't masqerade IPSEC (mark 50))
db073a10 AF	120	/sbin/iptables -t nat -A REDNAT -m mark --mark 50 -o $IFACE -j RETURN
3a1019f6 MT	121	/sbin/iptables -t nat -A REDNAT -o $IFACE -j MASQUERADE
	122
	123	fi
	124	}
	125
	126	# See how we were called.
	127	case "$1" in
	128	start)
	129	iptables_init
	130
	131	# Limit Packets- helps reduce dos/syn attacks
	132	# original do nothing line
	133	#/sbin/iptables -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 10/sec
	134	# the correct one, but the negative '!' do nothing...
9efdd899	135	#/sbin/iptables -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN ! -m limit --limit 10/sec -j DROP
3a1019f6 MT	136
	137	# Fix for braindead ISP's
	138	/sbin/iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
	139
	140	# CUSTOM chains, can be used by the users themselves
	141	/sbin/iptables -N CUSTOMINPUT
	142	/sbin/iptables -A INPUT -j CUSTOMINPUT
e050adc8 CS	143	/sbin/iptables -N GUARDIANINPUT
e050adc8 CS	144	/sbin/iptables -A INPUT -j GUARDIANINPUT
3a1019f6 MT	145	/sbin/iptables -N CUSTOMFORWARD
	146	/sbin/iptables -A FORWARD -j CUSTOMFORWARD
	147	/sbin/iptables -N CUSTOMOUTPUT
	148	/sbin/iptables -A OUTPUT -j CUSTOMOUTPUT
4cb74dce MT	149	/sbin/iptables -N OUTGOINGFW
4cb74dce MT	150	/sbin/iptables -A OUTPUT -j OUTGOINGFW
3a1019f6 MT	151	/sbin/iptables -t nat -N CUSTOMPREROUTING
	152	/sbin/iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
	153	/sbin/iptables -t nat -N CUSTOMPOSTROUTING
	154	/sbin/iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING
	155
daa1ceba AF	156	# IPTV chains for IGMPPROXY
	157	/sbin/iptables -N IPTVINPUT
	158	/sbin/iptables -A INPUT -j IPTVINPUT
	159	/sbin/iptables -N IPTVFORWARD
	160	/sbin/iptables -A FORWARD -j IPTVFORWARD
	161
3a1019f6 MT	162	# filtering from GUI
	163	/sbin/iptables -N GUIINPUT
	164	/sbin/iptables -A INPUT -j GUIINPUT
905fbf3e	165	/sbin/iptables -A GUIINPUT -p icmp --icmp-type 8 -j ACCEPT
3a1019f6 MT	166
	167	# Accept everything connected
	168	/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	169	/sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
5fd30232 MT	170
5fd30232 MT	171	# trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
6652626c AF	172	/sbin/iptables -N IPSECINPUT
	173	/sbin/iptables -N IPSECFORWARD
	174	/sbin/iptables -N IPSECOUTPUT
5fd30232	175	/sbin/iptables -N OPENSSLVIRTUAL
6652626c	176	/sbin/iptables -A INPUT -j IPSECINPUT
5595bc03	177	/sbin/iptables -A INPUT -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL INPUT"
6652626c	178	/sbin/iptables -A FORWARD -j IPSECFORWARD
5595bc03	179	/sbin/iptables -A FORWARD -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL FORWARD"
6652626c	180	/sbin/iptables -A OUTPUT -j IPSECOUTPUT
c4cd0f7b AF	181	/sbin/iptables -t nat -N IPSECNAT
c4cd0f7b AF	182	/sbin/iptables -t nat -A POSTROUTING -j IPSECNAT
b68e5c14	183
4cb74dce MT	184	# Outgoing Firewall
4cb74dce MT	185	/sbin/iptables -A FORWARD -j OUTGOINGFW
3a1019f6 MT	186
	187	# localhost and ethernet.
	188	/sbin/iptables -A INPUT -i lo -m state --state NEW -j ACCEPT
	189	/sbin/iptables -A INPUT -s 127.0.0.0/8 -m state --state NEW -j DROP # Loopback not on lo
	190	/sbin/iptables -A INPUT -d 127.0.0.0/8 -m state --state NEW -j DROP
	191	/sbin/iptables -A FORWARD -i lo -m state --state NEW -j ACCEPT
	192	/sbin/iptables -A FORWARD -s 127.0.0.0/8 -m state --state NEW -j DROP
	193	/sbin/iptables -A FORWARD -d 127.0.0.0/8 -m state --state NEW -j DROP
dd79c399	194	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT ! -p icmp
3a1019f6 MT	195	/sbin/iptables -A FORWARD -i $GREEN_DEV -m state --state NEW -j ACCEPT
	196
	197	# If a host on orange tries to initiate a connection to IPFire's red IP and
	198	# the connection gets DNATed back through a port forward to a server on orange
	199	# we end up with orange -> orange traffic passing through IPFire
	200	[ "$ORANGE_DEV" != "" ] && /sbin/iptables -A FORWARD -i $ORANGE_DEV -o $ORANGE_DEV -m state --state NEW -j ACCEPT
	201
3a1019f6 MT	202	# allow DHCP on BLUE to be turned on/off
	203	/sbin/iptables -N DHCPBLUEINPUT
	204	/sbin/iptables -A INPUT -j DHCPBLUEINPUT
	205
5fd30232 MT	206	# OPenSSL
	207	/sbin/iptables -N OPENSSLPHYSICAL
	208	/sbin/iptables -A INPUT -j OPENSSLPHYSICAL
3a1019f6 MT	209
	210	# WIRELESS chains
	211	/sbin/iptables -N WIRELESSINPUT
	212	/sbin/iptables -A INPUT -m state --state NEW -j WIRELESSINPUT
	213	/sbin/iptables -N WIRELESSFORWARD
	214	/sbin/iptables -A FORWARD -m state --state NEW -j WIRELESSFORWARD
	215
	216	# RED chain, used for the red interface
	217	/sbin/iptables -N REDINPUT
	218	/sbin/iptables -A INPUT -j REDINPUT
	219	/sbin/iptables -N REDFORWARD
	220	/sbin/iptables -A FORWARD -j REDFORWARD
	221	/sbin/iptables -t nat -N REDNAT
	222	/sbin/iptables -t nat -A POSTROUTING -j REDNAT
	223
	224	iptables_red
	225
	226	# DMZ pinhole chain. setdmzholes setuid prog adds rules here to allow
	227	# ORANGE to talk to GREEN / BLUE.
	228	/sbin/iptables -N DMZHOLES
	229	if [ "$ORANGE_DEV" != "" ]; then
	230	/sbin/iptables -A FORWARD -i $ORANGE_DEV -m state --state NEW -j DMZHOLES
	231	fi
	232
	233	# XTACCESS chain, used for external access
	234	/sbin/iptables -N XTACCESS
	235	/sbin/iptables -A INPUT -m state --state NEW -j XTACCESS
	236
	237	# PORTFWACCESS chain, used for portforwarding
	238	/sbin/iptables -N PORTFWACCESS
	239	/sbin/iptables -A FORWARD -m state --state NEW -j PORTFWACCESS
	240
	241	# Custom prerouting chains (for transparent proxy and port forwarding)
	242	/sbin/iptables -t nat -N SQUID
	243	/sbin/iptables -t nat -A PREROUTING -j SQUID
	244	/sbin/iptables -t nat -N PORTFW
	245	/sbin/iptables -t nat -A PREROUTING -j PORTFW
	246
7e7495b3 MT	247	# upnp chain for our upnp daemon
	248	/sbin/iptables -t nat -N UPNPFW
	249	/sbin/iptables -t nat -A PREROUTING -j UPNPFW
	250
3a1019f6 MT	251
	252	# Custom mangle chain (for port fowarding)
	253	/sbin/iptables -t mangle -N PORTFWMANGLE
	254	/sbin/iptables -t mangle -A PREROUTING -j PORTFWMANGLE
	255
	256	# Postrouting rules (for port forwarding)
	257	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 1 -j SNAT \
	258	--to-source $GREEN_ADDRESS
	259	if [ "$BLUE_DEV" != "" ]; then
	260	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 2 -j SNAT --to-source $BLUE_ADDRESS
	261	fi
	262	if [ "$ORANGE_DEV" != "" ]; then
	263	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 3 -j SNAT --to-source $ORANGE_ADDRESS
	264	fi
	265
3a1019f6 MT	266	# run local firewall configuration, if present
	267	if [ -x /etc/sysconfig/firewall.local ]; then
	268	/etc/sysconfig/firewall.local start
	269	fi
	270
	271	# last rule in input and forward chain is for logging.
5595bc03 CS	272
5595bc03 CS	273	if [ "$DROPINPUT" == "on" ]; then
97fe1741	274	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
5595bc03	275	fi
97fe1741	276	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
5595bc03	277	if [ "$DROPOUTPUT" == "on" ]; then
97fe1741	278	/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
5595bc03	279	fi
97fe1741	280	/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
3a1019f6	281	;;
13211b21 CS	282	startovpn)
	283	# run openvpn
	284	/usr/local/bin/openvpnctrl --create-chains-and-rules
	285	;;
3a1019f6 MT	286	stop)
	287	iptables_init
	288	# Accept everyting connected
	289	/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	290
	291	# localhost and ethernet.
	292	/sbin/iptables -A INPUT -i lo -j ACCEPT
	293	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT
	294
	295	if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
	296	/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	297	/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	298	fi
	299	if [ "$PROTOCOL" == "RFC1483" -a "$METHOD" == "DHCP" ]; then
	300	/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	301	/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	302	fi
	303
3a1019f6 MT	304	# run local firewall configuration, if present
	305	if [ -x /etc/sysconfig/firewall.local ]; then
	306	/etc/sysconfig/firewall.local stop
	307	fi
	308
5595bc03	309	if [ "$DROPINPUT" == "on" ]; then
97fe1741	310	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
5595bc03	311	fi
97fe1741	312	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
5595bc03	313	if [ "$DROPOUTPUT" == "on" ]; then
97fe1741	314	/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
5595bc03	315	fi
97fe1741	316	/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
3a1019f6	317	;;
13211b21 CS	318	stopovpn)
	319	# stop openvpn
	320	/usr/local/bin/openvpnctrl --delete-chains-and-rules
	321	;;
3a1019f6 MT	322	reload)
	323	iptables_red
	324
	325	# run local firewall configuration, if present
	326	if [ -x /etc/sysconfig/firewall.local ]; then
	327	/etc/sysconfig/firewall.local reload
	328	fi
	329	;;
	330	restart)
	331	$0 stop
	332	$0 start
	333	;;
	334	*)
	335	echo "Usage: $0 {start\|stop\|reload\|restart}"
	336	exit 1
	337	;;
	338	esac
	339
	340	exit 0