[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 -N OVPNBLOCK
	/sbin/iptables -A FORWARD -j OVPNBLOCK
	/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 OVPNBLOCK
	/sbin/iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	/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 -N OVPNNAT
	/sbin/iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
	/sbin/iptables -t nat -N CUSTOMPOSTROUTING
	/sbin/iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING
	/sbin/iptables -t nat -A POSTROUTING -j OVPNNAT

	# 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 ovpn networks INPUT
	/sbin/iptables -A INPUT -j OVPNBLOCK

	# 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
	
	# Accept everything on lo
	iptables -A INPUT  -i lo -m state --state NEW -j ACCEPT
	iptables -A OUTPUT -o lo -m state --state NEW -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

	# 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
	
	# 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
	
	# Forward Firewall
	/sbin/iptables -N FORWARDFW
	/sbin/iptables -A FORWARD -j FORWARDFW
		
	# 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
		
	# 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 NAT_DESTINATION
	/sbin/iptables -t nat -N NAT_SOURCE
	/sbin/iptables -t nat -A PREROUTING -j NAT_DESTINATION
	/sbin/iptables -t nat -I POSTROUTING 3 -j NAT_SOURCE
	
	
	
	# 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

	# 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

	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"

	if [ "$DROPINPUT" == "on" ]; then
		/sbin/iptables -A INPUT   -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT"
	fi
	if [ "$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 POLICYIN
	/sbin/iptables -A INPUT -j POLICYIN
	/sbin/iptables -N POLICYFWD
	/sbin/iptables -A FORWARD -j POLICYFWD
	/sbin/iptables -N POLICYOUT
	/sbin/iptables -A OUTPUT -j POLICYOUT

	/usr/sbin/firewall-policy

	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"

	if [ "$DROPINPUT" == "on" ]; then
		/sbin/iptables -A INPUT   -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT"
	fi
	if [ "$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"
	;;
  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

	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"

	if [ "$DROPINPUT" == "on" ]; then
		/sbin/iptables -A INPUT   -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT"
	fi
	if [ "$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/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	122	# Outgoing masquerading (don't masqerade IPSEC (mark 50))
dc82656b AM	123	/sbin/iptables -t nat -A REDNAT -m mark --mark 50 -o $IFACE -j RETURN
dc82656b AM	124	/sbin/iptables -t nat -A REDNAT -o $IFACE -j MASQUERADE
3a1019f6 MT	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
057249ba CS	147	/sbin/iptables -A INPUT -j GUARDIAN
690b0bd7 AM	148	/sbin/iptables -N OVPNBLOCK
690b0bd7 AM	149	/sbin/iptables -A FORWARD -j OVPNBLOCK
057249ba	150	/sbin/iptables -A FORWARD -j GUARDIAN
3a1019f6 MT	151	/sbin/iptables -N CUSTOMFORWARD
	152	/sbin/iptables -A FORWARD -j CUSTOMFORWARD
	153	/sbin/iptables -N CUSTOMOUTPUT
690b0bd7	154	/sbin/iptables -A OUTPUT -j OVPNBLOCK
ef6f983b	155	/sbin/iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
3a1019f6	156	/sbin/iptables -A OUTPUT -j CUSTOMOUTPUT
4cb74dce MT	157	/sbin/iptables -N OUTGOINGFW
4cb74dce MT	158	/sbin/iptables -A OUTPUT -j OUTGOINGFW
3a1019f6	159	/sbin/iptables -t nat -N CUSTOMPREROUTING
690b0bd7	160	/sbin/iptables -t nat -N OVPNNAT
3a1019f6 MT	161	/sbin/iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
	162	/sbin/iptables -t nat -N CUSTOMPOSTROUTING
	163	/sbin/iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING
690b0bd7	164	/sbin/iptables -t nat -A POSTROUTING -j OVPNNAT
3a1019f6	165
daa1ceba AF	166	# IPTV chains for IGMPPROXY
	167	/sbin/iptables -N IPTVINPUT
	168	/sbin/iptables -A INPUT -j IPTVINPUT
	169	/sbin/iptables -N IPTVFORWARD
	170	/sbin/iptables -A FORWARD -j IPTVFORWARD
	171
690b0bd7 AM	172	# Filtering ovpn networks INPUT
	173	/sbin/iptables -A INPUT -j OVPNBLOCK
	174
3a1019f6 MT	175	# filtering from GUI
	176	/sbin/iptables -N GUIINPUT
	177	/sbin/iptables -A INPUT -j GUIINPUT
905fbf3e	178	/sbin/iptables -A GUIINPUT -p icmp --icmp-type 8 -j ACCEPT
3a1019f6 MT	179
	180	# Accept everything connected
	181	/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	182	/sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
5fd30232	183
ef6f983b AM	184	# Accept everything on lo
	185	iptables -A INPUT -i lo -m state --state NEW -j ACCEPT
	186	iptables -A OUTPUT -o lo -m state --state NEW -j ACCEPT
	187
5fd30232	188	# trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
6652626c AF	189	/sbin/iptables -N IPSECINPUT
	190	/sbin/iptables -N IPSECFORWARD
	191	/sbin/iptables -N IPSECOUTPUT
5fd30232	192	/sbin/iptables -N OPENSSLVIRTUAL
6652626c	193	/sbin/iptables -A INPUT -j IPSECINPUT
5595bc03	194	/sbin/iptables -A INPUT -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL INPUT"
6652626c	195	/sbin/iptables -A FORWARD -j IPSECFORWARD
5595bc03	196	/sbin/iptables -A FORWARD -j OPENSSLVIRTUAL -m comment --comment "OPENSSLVIRTUAL FORWARD"
6652626c	197	/sbin/iptables -A OUTPUT -j IPSECOUTPUT
c4cd0f7b AF	198	/sbin/iptables -t nat -N IPSECNAT
c4cd0f7b AF	199	/sbin/iptables -t nat -A POSTROUTING -j IPSECNAT
b68e5c14	200
231499fc AM	201	# Input Firewall
	202	/sbin/iptables -N INPUTFW
	203	/sbin/iptables -A INPUT -m state --state NEW -j INPUTFW
	204
3a1019f6	205	# localhost and ethernet.
d8158ca6	206	/sbin/iptables -A INPUT -i lo -m state --state NEW -j ACCEPT
3a1019f6 MT	207	/sbin/iptables -A INPUT -s 127.0.0.0/8 -m state --state NEW -j DROP # Loopback not on lo
3a1019f6 MT	208	/sbin/iptables -A INPUT -d 127.0.0.0/8 -m state --state NEW -j DROP
cae0079c	209	/sbin/iptables -A FORWARD -i lo -m state --state NEW -j ACCEPT
3a1019f6 MT	210	/sbin/iptables -A FORWARD -s 127.0.0.0/8 -m state --state NEW -j DROP
3a1019f6 MT	211	/sbin/iptables -A FORWARD -d 127.0.0.0/8 -m state --state NEW -j DROP
dd79c399	212	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT ! -p icmp
218b3341	213
3a1019f6 MT	214	# allow DHCP on BLUE to be turned on/off
	215	/sbin/iptables -N DHCPBLUEINPUT
	216	/sbin/iptables -A INPUT -j DHCPBLUEINPUT
81393987 AM	217
	218	# WIRELESS chains
	219	/sbin/iptables -N WIRELESSINPUT
	220	/sbin/iptables -A INPUT -m state --state NEW -j WIRELESSINPUT
	221	/sbin/iptables -N WIRELESSFORWARD
9efd8d1c	222	/sbin/iptables -A FORWARD -m state --state NEW -j WIRELESSFORWARD
12dcfbbd	223
93b75f31 AM	224	# Forward Firewall
	225	/sbin/iptables -N FORWARDFW
	226	/sbin/iptables -A FORWARD -j FORWARDFW
	227
12dcfbbd AM	228	# PORTFWACCESS chain, used for portforwarding
	229	/sbin/iptables -N PORTFWACCESS
	230	/sbin/iptables -A FORWARD -m state --state NEW -j PORTFWACCESS
	231
5fd30232 MT	232	# OPenSSL
	233	/sbin/iptables -N OPENSSLPHYSICAL
	234	/sbin/iptables -A INPUT -j OPENSSLPHYSICAL
3a1019f6	235
3a1019f6 MT	236	# RED chain, used for the red interface
	237	/sbin/iptables -N REDINPUT
	238	/sbin/iptables -A INPUT -j REDINPUT
	239	/sbin/iptables -N REDFORWARD
	240	/sbin/iptables -A FORWARD -j REDFORWARD
	241	/sbin/iptables -t nat -N REDNAT
	242	/sbin/iptables -t nat -A POSTROUTING -j REDNAT
	243
	244	iptables_red
218b3341	245
3a1019f6 MT	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
9efd8d1c AM	249	/sbin/iptables -t nat -N NAT_DESTINATION
	250	/sbin/iptables -t nat -N NAT_SOURCE
	251	/sbin/iptables -t nat -A PREROUTING -j NAT_DESTINATION
690b0bd7 AM	252	/sbin/iptables -t nat -I POSTROUTING 3 -j NAT_SOURCE
690b0bd7 AM	253
9efd8d1c AM	254
9efd8d1c AM	255
7e7495b3 MT	256	# upnp chain for our upnp daemon
	257	/sbin/iptables -t nat -N UPNPFW
	258	/sbin/iptables -t nat -A PREROUTING -j UPNPFW
54194ba4	259	/sbin/iptables -N UPNPFW
42cb3860	260	/sbin/iptables -A FORWARD -m state --state NEW -j UPNPFW
3a1019f6	261
3a1019f6	262	# Postrouting rules (for port forwarding)
690b0bd7	263	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 1 -j SNAT --to-source $GREEN_ADDRESS
3a1019f6 MT	264	if [ "$BLUE_DEV" != "" ]; then
	265	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 2 -j SNAT --to-source $BLUE_ADDRESS
	266	fi
	267	if [ "$ORANGE_DEV" != "" ]; then
	268	/sbin/iptables -t nat -A POSTROUTING -m mark --mark 3 -j SNAT --to-source $ORANGE_ADDRESS
	269	fi
	270
3a1019f6 MT	271	# run local firewall configuration, if present
	272	if [ -x /etc/sysconfig/firewall.local ]; then
	273	/etc/sysconfig/firewall.local start
	274	fi
690b0bd7 AM	275
690b0bd7 AM	276	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
c400fe4c AM	277
c400fe4c AM	278	if [ "$DROPINPUT" == "on" ]; then
690b0bd7	279	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT"
c400fe4c AM	280	fi
	281	if [ "$DROPFORWARD" == "on" ]; then
	282	/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD"
	283	fi
	284	/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_FORWARD"
	285
62fc8511	286	#POLICY CHAIN
a9b3ae26 AM	287	/sbin/iptables -N POLICYIN
a9b3ae26 AM	288	/sbin/iptables -A INPUT -j POLICYIN
5d7faa45 AM	289	/sbin/iptables -N POLICYFWD
	290	/sbin/iptables -A FORWARD -j POLICYFWD
	291	/sbin/iptables -N POLICYOUT
	292	/sbin/iptables -A OUTPUT -j POLICYOUT
b324de14	293
5d7faa45	294	/usr/sbin/firewall-policy
690b0bd7 AM	295
	296	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
	297
	298	if [ "$DROPINPUT" == "on" ]; then
	299	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT"
	300	fi
	301	if [ "$DROPFORWARD" == "on" ]; then
	302	/sbin/iptables -A FORWARD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD"
	303	fi
	304	/sbin/iptables -A FORWARD -j DROP -m comment --comment "DROP_FORWARD"
fd10a52c	305	;;
13211b21 CS	306	startovpn)
	307	# run openvpn
	308	/usr/local/bin/openvpnctrl --create-chains-and-rules
	309	;;
3a1019f6 MT	310	stop)
	311	iptables_init
	312	# Accept everyting connected
	313	/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	314
	315	# localhost and ethernet.
	316	/sbin/iptables -A INPUT -i lo -j ACCEPT
	317	/sbin/iptables -A INPUT -i $GREEN_DEV -m state --state NEW -j ACCEPT
	318
	319	if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
	320	/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	321	/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	322	fi
	323	if [ "$PROTOCOL" == "RFC1483" -a "$METHOD" == "DHCP" ]; then
	324	/sbin/iptables -A INPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	325	/sbin/iptables -A INPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
	326	fi
	327
3a1019f6 MT	328	# run local firewall configuration, if present
	329	if [ -x /etc/sysconfig/firewall.local ]; then
	330	/etc/sysconfig/firewall.local stop
	331	fi
c400fe4c	332
3e79f33f	333	/sbin/iptables -A INPUT -j DROP -m comment --comment "DROP_INPUT"
c400fe4c	334
5595bc03	335	if [ "$DROPINPUT" == "on" ]; then
c400fe4c	336	/sbin/iptables -A INPUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT"
5595bc03	337	fi
6be0579b	338	if [ "$DROPFORWARD" == "on" ]; then
c400fe4c	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"
ed31c098	342
6be0579b	343	;;
13211b21 CS	344	stopovpn)
	345	# stop openvpn
	346	/usr/local/bin/openvpnctrl --delete-chains-and-rules
	347	;;
3a1019f6 MT	348	reload)
	349	iptables_red
	350
	351	# run local firewall configuration, if present
	352	if [ -x /etc/sysconfig/firewall.local ]; then
	353	/etc/sysconfig/firewall.local reload
	354	fi
	355	;;
	356	restart)
	357	$0 stop
	358	$0 start
210ee67b AM	359	/usr/local/bin/forwardfwctrl
	360	/usr/local/bin/openvpnctrl -s > /dev/null 2>&1
	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