[people/pmueller/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 -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 OUTGOINGFW
	/sbin/iptables -A FORWARD -j OUTGOINGFWMAC
	/sbin/iptables -A INPUT -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


	# 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	149	/sbin/iptables -N OUTGOINGFW
d9716b06	150	/sbin/iptables -N OUTGOINGFWMAC
4cb74dce	151	/sbin/iptables -A OUTPUT -j OUTGOINGFW
3a1019f6 MT	152	/sbin/iptables -t nat -N CUSTOMPREROUTING
	153	/sbin/iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
	154	/sbin/iptables -t nat -N CUSTOMPOSTROUTING
	155	/sbin/iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING
	156
daa1ceba AF	157	# IPTV chains for IGMPPROXY
	158	/sbin/iptables -N IPTVINPUT
	159	/sbin/iptables -A INPUT -j IPTVINPUT
	160	/sbin/iptables -N IPTVFORWARD
	161	/sbin/iptables -A FORWARD -j IPTVFORWARD
	162
3a1019f6 MT	163	# filtering from GUI
	164	/sbin/iptables -N GUIINPUT
	165	/sbin/iptables -A INPUT -j GUIINPUT
905fbf3e	166	/sbin/iptables -A GUIINPUT -p icmp --icmp-type 8 -j ACCEPT
3a1019f6 MT	167
	168	# Accept everything connected
	169	/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	170	/sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
5fd30232 MT	171
5fd30232 MT	172	# trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
6652626c AF	173	/sbin/iptables -N IPSECINPUT
	174	/sbin/iptables -N IPSECFORWARD
	175	/sbin/iptables -N IPSECOUTPUT
5fd30232	176	/sbin/iptables -N OPENSSLVIRTUAL
6652626c	177	/sbin/iptables -A INPUT -j IPSECINPUT
5595bc03	178	/sbin/iptables -A INPUT -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL INPUT"
6652626c	179	/sbin/iptables -A FORWARD -j IPSECFORWARD
5595bc03	180	/sbin/iptables -A FORWARD -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL FORWARD"
6652626c	181	/sbin/iptables -A OUTPUT -j IPSECOUTPUT
c4cd0f7b AF	182	/sbin/iptables -t nat -N IPSECNAT
c4cd0f7b AF	183	/sbin/iptables -t nat -A POSTROUTING -j IPSECNAT
b68e5c14	184
4cb74dce MT	185	# Outgoing Firewall
4cb74dce MT	186	/sbin/iptables -A FORWARD -j OUTGOINGFW
d9716b06 CS	187	/sbin/iptables -A FORWARD -j OUTGOINGFWMAC
d9716b06 CS	188	/sbin/iptables -A INPUT -j OUTGOINGFWMAC
3a1019f6 MT	189
	190	# localhost and ethernet.
	191	/sbin/iptables -A INPUT -i lo -m state --state NEW -j ACCEPT
	192	/sbin/iptables -A INPUT -s 127.0.0.0/8 -m state --state NEW -j DROP # Loopback not on lo
	193	/sbin/iptables -A INPUT -d 127.0.0.0/8 -m state --state NEW -j DROP
	194	/sbin/iptables -A FORWARD -i lo -m state --state NEW -j ACCEPT
	195	/sbin/iptables -A FORWARD -s 127.0.0.0/8 -m state --state NEW -j DROP
	196	/sbin/iptables -A FORWARD -d 127.0.0.0/8 -m state --state NEW -j DROP
dd79c399	197	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT ! -p icmp
3a1019f6 MT	198	/sbin/iptables -A FORWARD -i $GREEN_DEV -m state --state NEW -j ACCEPT
	199
	200	# If a host on orange tries to initiate a connection to IPFire's red IP and
	201	# the connection gets DNATed back through a port forward to a server on orange
	202	# we end up with orange -> orange traffic passing through IPFire
	203	[ "$ORANGE_DEV" != "" ] && /sbin/iptables -A FORWARD -i $ORANGE_DEV -o $ORANGE_DEV -m state --state NEW -j ACCEPT
	204
3a1019f6 MT	205	# allow DHCP on BLUE to be turned on/off
	206	/sbin/iptables -N DHCPBLUEINPUT
	207	/sbin/iptables -A INPUT -j DHCPBLUEINPUT
	208
5fd30232 MT	209	# OPenSSL
	210	/sbin/iptables -N OPENSSLPHYSICAL
	211	/sbin/iptables -A INPUT -j OPENSSLPHYSICAL
3a1019f6 MT	212
	213	# WIRELESS chains
	214	/sbin/iptables -N WIRELESSINPUT
	215	/sbin/iptables -A INPUT -m state --state NEW -j WIRELESSINPUT
	216	/sbin/iptables -N WIRELESSFORWARD
	217	/sbin/iptables -A FORWARD -m state --state NEW -j WIRELESSFORWARD
	218
	219	# RED chain, used for the red interface
	220	/sbin/iptables -N REDINPUT
	221	/sbin/iptables -A INPUT -j REDINPUT
	222	/sbin/iptables -N REDFORWARD
	223	/sbin/iptables -A FORWARD -j REDFORWARD
	224	/sbin/iptables -t nat -N REDNAT
	225	/sbin/iptables -t nat -A POSTROUTING -j REDNAT
	226
	227	iptables_red
	228
	229	# DMZ pinhole chain. setdmzholes setuid prog adds rules here to allow
	230	# ORANGE to talk to GREEN / BLUE.
	231	/sbin/iptables -N DMZHOLES
	232	if [ "$ORANGE_DEV" != "" ]; then
	233	/sbin/iptables -A FORWARD -i $ORANGE_DEV -m state --state NEW -j DMZHOLES
	234	fi
	235
	236	# XTACCESS chain, used for external access
	237	/sbin/iptables -N XTACCESS
	238	/sbin/iptables -A INPUT -m state --state NEW -j XTACCESS
	239
	240	# PORTFWACCESS chain, used for portforwarding
	241	/sbin/iptables -N PORTFWACCESS
	242	/sbin/iptables -A FORWARD -m state --state NEW -j PORTFWACCESS
	243
	244	# Custom prerouting chains (for transparent proxy and port forwarding)
	245	/sbin/iptables -t nat -N SQUID
	246	/sbin/iptables -t nat -A PREROUTING -j SQUID
	247	/sbin/iptables -t nat -N PORTFW
	248	/sbin/iptables -t nat -A PREROUTING -j PORTFW
	249
7e7495b3 MT	250	# upnp chain for our upnp daemon
	251	/sbin/iptables -t nat -N UPNPFW
	252	/sbin/iptables -t nat -A PREROUTING -j UPNPFW
	253
3a1019f6 MT	254
	255	# Custom mangle chain (for port fowarding)
	256	/sbin/iptables -t mangle -N PORTFWMANGLE
	257	/sbin/iptables -t mangle -A PREROUTING -j PORTFWMANGLE
	258
	259	# Postrouting rules (for port forwarding)
	260	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 1 -j SNAT \
	261	--to-source $GREEN_ADDRESS
	262	if [ "$BLUE_DEV" != "" ]; then
	263	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 2 -j SNAT --to-source $BLUE_ADDRESS
	264	fi
	265	if [ "$ORANGE_DEV" != "" ]; then
	266	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 3 -j SNAT --to-source $ORANGE_ADDRESS
	267	fi
	268
3a1019f6 MT	269	# run local firewall configuration, if present
	270	if [ -x /etc/sysconfig/firewall.local ]; then
	271	/etc/sysconfig/firewall.local start
	272	fi
	273
	274	# last rule in input and forward chain is for logging.
5595bc03 CS	275
5595bc03 CS	276	if [ "$DROPINPUT" == "on" ]; then
97fe1741	277	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
5595bc03	278	fi
97fe1741	279	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
5595bc03	280	if [ "$DROPOUTPUT" == "on" ]; then
97fe1741	281	/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
5595bc03	282	fi
97fe1741	283	/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
3a1019f6	284	;;
13211b21 CS	285	startovpn)
	286	# run openvpn
	287	/usr/local/bin/openvpnctrl --create-chains-and-rules
	288	;;
3a1019f6 MT	289	stop)
	290	iptables_init
	291	# Accept everyting connected
	292	/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	293
	294	# localhost and ethernet.
	295	/sbin/iptables -A INPUT -i lo -j ACCEPT
	296	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT
	297
	298	if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
	299	/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	300	/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	301	fi
	302	if [ "$PROTOCOL" == "RFC1483" -a "$METHOD" == "DHCP" ]; then
	303	/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	304	/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	305	fi
	306
3a1019f6 MT	307	# run local firewall configuration, if present
	308	if [ -x /etc/sysconfig/firewall.local ]; then
	309	/etc/sysconfig/firewall.local stop
	310	fi
	311
5595bc03	312	if [ "$DROPINPUT" == "on" ]; then
97fe1741	313	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT "
5595bc03	314	fi
97fe1741	315	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
5595bc03	316	if [ "$DROPOUTPUT" == "on" ]; then
97fe1741	317	/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT "
5595bc03	318	fi
97fe1741	319	/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_OUTPUT"
3a1019f6	320	;;
13211b21 CS	321	stopovpn)
	322	# stop openvpn
	323	/usr/local/bin/openvpnctrl --delete-chains-and-rules
	324	;;
3a1019f6 MT	325	reload)
	326	iptables_red
	327
	328	# run local firewall configuration, if present
	329	if [ -x /etc/sysconfig/firewall.local ]; then
	330	/etc/sysconfig/firewall.local reload
	331	fi
	332	;;
	333	restart)
	334	$0 stop
	335	$0 start
	336	;;
	337	*)
	338	echo "Usage: $0 {start\|stop\|reload\|restart}"
	339	exit 1
	340	;;
	341	esac
	342
	343	exit 0