Unify rc.firewall and rc.firewall6, and obsolete rc.firewall6

and rc.d/ip6fw.

Reviewed by:	dougb, jhb
MFC after:	1 month

8 files changed, 178 insertions, 365 deletions

diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
index 6ec1b82..e352840 100644
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -14,6 +14,9 @@
 # The file is partitioned: OLD_FILES first, then OLD_LIBS and OLD_DIRS last.
 #
 
+# 20091202: unify rc.firewall and rc.firewall6.
+OLD_FILES+=etc/rc.d/ip6fw
+OLD_FILES+=etc/rc.firewall6
 # 20091117: removal of rc.early(8) link
 OLD_FILES+=usr/share/man/man8/rc.early.8.gz
 # 20091027: pselect.3 implemented as syscall
diff --git a/etc/Makefile b/etc/Makefile
index 88f0bfb..42221a8 100644
--- a/etc/Makefile
+++ b/etc/Makefile
@@ -15,7 +15,7 @@ BIN1=	auth.conf \
 	inetd.conf libalias.conf login.access login.conf mac.conf motd \
 	netconfig network.subr networks newsyslog.conf nsswitch.conf \
 	phones profile protocols \
-	rc rc.bsdextended rc.firewall rc.firewall6 rc.initdiskless \
+	rc rc.bsdextended rc.firewall rc.initdiskless \
 	rc.sendmail rc.shutdown \
 	rc.subr remote rpc services shells \
 	sysctl.conf syslog.conf
diff --git a/etc/defaults/rc.conf b/etc/defaults/rc.conf
index c094303..19a9a39 100644
--- a/etc/defaults/rc.conf
+++ b/etc/defaults/rc.conf
@@ -118,7 +118,10 @@ firewall_type="UNKNOWN"		# Firewall type (see /etc/rc.firewall)
 firewall_quiet="NO"		# Set to YES to suppress rule display
 firewall_logging="NO"		# Set to YES to enable events logging
 firewall_flags=""		# Flags passed to ipfw when type is a file
-firewall_client_net="192.0.2.0/24" # Network address for "client" firewall.
+firewall_client_net="192.0.2.0/24" # IPv4 Network address for "client"
+				# firewall.
+#firewall_client_net_ipv6="2001:db8:2:1::/64" # IPv6 network prefix for
+				# "client" firewall.
 firewall_simple_iif="ed1"	# Inside network interface for "simple"
 				# firewall.
 firewall_simple_inet="192.0.2.16/28" # Inside network address for "simple"
@@ -127,12 +130,22 @@ firewall_simple_oif="ed0"	# Outside network interface for "simple"
 				# firewall.
 firewall_simple_onet="192.0.2.0/28" # Outside network address for "simple"
 				# firewall.
+#firewall_simple_iif_ipv6="ed1"	# Inside IPv6 network interface for "simple"
+				# firewall.
+#firewall_simple_inet_ipv6="2001:db8:2:800::/56" # Inside IPv6 network prefix
+				# for "simple" firewall.
+#firewall_simple_oif_ipv6="ed0"	# Outside IPv6 network interface for "simple"
+				# firewall.
+#firewall_simple_onet_ipv6="2001:db8:2:0::/56" # Outside IPv6 network prefix
+				# for "simple" firewall.
 firewall_myservices=""		# List of TCP ports on which this host
 				# offers services for "workstation" firewall.
 firewall_allowservices=""	# List of IPs which have access to
 				# $firewall_myservices for "workstation"
 				# firewall.
-firewall_trusted=""		# List of IPs which have full access to this
+firewall_trusted=""		# List of IPv4s which have full access to this
+				# host for "workstation" firewall.
+firewall_trusted_ipv6=""	# List of IPv6s which have full access to this
 				# host for "workstation" firewall.
 firewall_logdeny="NO"		# Set to YES to log default denied incoming
 				# packets for "workstation" firewall.
@@ -472,13 +485,6 @@ ipv6_faith_prefix="NO"		# Set faith prefix to enable a FAITH
 				# faithd(8) setup.
 ipv6_ipv4mapping="NO"		# Set to "YES" to enable IPv4 mapped IPv6 addr
 				# communication. (like ::ffff:a.b.c.d)
-ipv6_firewall_enable="NO"	# Set to YES to enable IPv6 firewall
-				# functionality
-ipv6_firewall_script="/etc/rc.firewall6" # Which script to run to set up the IPv6 firewall
-ipv6_firewall_type="UNKNOWN"	# IPv6 Firewall type (see /etc/rc.firewall6)
-ipv6_firewall_quiet="NO"	# Set to YES to suppress rule display
-ipv6_firewall_logging="NO"	# Set to YES to enable events logging
-ipv6_firewall_flags=""		# Flags passed to ip6fw when type is a file
 ipv6_ipfilter_rules="/etc/ipf6.rules"	# rules definition file for ipfilter,
 					# see /usr/src/contrib/ipfilter/rules
 					# for examples
diff --git a/etc/rc.d/Makefile b/etc/rc.d/Makefile
index fbfac8a..7f72303 100755
--- a/etc/rc.d/Makefile
+++ b/etc/rc.d/Makefile
@@ -15,7 +15,7 @@ FILES=	DAEMON FILESYSTEMS LOGIN NETWORKING SERVERS \
 	hcsecd \
 	hostapd hostid hostid_save hostname \
 	inetd initrandom \
-	ip6addrctl ip6fw ipfilter ipfs ipfw ipmon \
+	ip6addrctl ipfilter ipfs ipfw ipmon \
 	ipnat ipsec ipxrouted \
 	jail \
 	kadmind kerberos keyserv kldxref kpasswdd \
diff --git a/etc/rc.d/ip6fw b/etc/rc.d/ip6fw
deleted file mode 100755
index ca95d36..0000000
--- a/etc/rc.d/ip6fw
+++ /dev/null
@@ -1,48 +0,0 @@
-#!/bin/sh
-#
-# $FreeBSD$
-#
-
-# PROVIDE: ip6fw
-# REQUIRE: routing
-# KEYWORD: nojail
-
-. /etc/rc.subr
-
-name="ip6fw"
-rcvar=`set_rcvar ipv6_firewall`
-start_cmd="ip6fw_start"
-stop_cmd="${SYSCTL_W} net.inet6.ip6.fw.enable=0"
-required_modules="ipfw"
-
-ip6fw_start()
-{
-	# Specify default rules file if none provided
-	if [ -z "${ipv6_firewall_script}" ]; then
-		ipv6_firewall_script=/etc/rc.firewall6
-	fi
-
-	# Load rules
-	#
-	if [ -r "${ipv6_firewall_script}" ]; then
-		/bin/sh "${ipv6_firewall_script}"
-		echo 'IPv6 Firewall rules loaded.'
-	elif [ "`ipfw show 65535`" = "65535 deny ip from any to any" ]; then
-		warn 'IPv6 firewall rules have not been loaded. Default' \
-		    ' to DENY all access.'
-	fi
-
-	# Enable firewall logging
-	#
-	if checkyesno ipv6_firewall_logging; then
-		echo 'IPv6 Firewall logging=YES'
-		sysctl net.inet.ip.fw.verbose=1 >/dev/null
-	fi
-
-	# Enable the firewall
-	#
-	${SYSCTL_W} net.inet6.ip6.fw.enable=1
-}
-
-load_rc_config $name
-run_rc_command "$1"
diff --git a/etc/rc.d/ipfw b/etc/rc.d/ipfw
index 872f278..dd7ab55 100755
--- a/etc/rc.d/ipfw
+++ b/etc/rc.d/ipfw
@@ -17,6 +17,8 @@ start_precmd="ipfw_prestart"
 stop_cmd="ipfw_stop"
 required_modules="ipfw"
 
+set_rcvar_obsolete ipv6_firewall_enable
+
 ipfw_prestart()
 {
 	if checkyesno dummynet_enable; then
@@ -61,7 +63,13 @@ ipfw_start()
 	# Enable the firewall
 	#
 	if ! ${SYSCTL_W} net.inet.ip.fw.enable=1 1>/dev/null 2>&1; then
-		warn "failed to enable firewall"
+		warn "failed to enable IPv4 firewall"
+	fi
+	if afexists inet6; then
+		if ! ${SYSCTL_W} net.inet6.ip6.fw.enable=1 1>/dev/null 2>&1
+		then
+			warn "failed to enable IPv6 firewall"
+		fi
 	fi
 }
 
@@ -70,6 +78,9 @@ ipfw_stop()
 	# Disable the firewall
 	#
 	${SYSCTL_W} net.inet.ip.fw.enable=0
+	if afexists inet6; then
+		${SYSCTL_W} net.inet6.ip6.fw.enable=0
+	fi
 	if [ -f /etc/rc.d/natd ] ; then
 		/etc/rc.d/natd quietstop
 	fi
diff --git a/etc/rc.firewall b/etc/rc.firewall
index bc700d1..1eddde2 100644
--- a/etc/rc.firewall
+++ b/etc/rc.firewall
@@ -85,12 +85,42 @@ setup_loopback () {
 	${fwcmd} add 100 pass all from any to any via lo0
 	${fwcmd} add 200 deny all from any to 127.0.0.0/8
 	${fwcmd} add 300 deny ip from 127.0.0.0/8 to any
+	if [ $ipv6_available -eq 0 ]; then
+		${fwcmd} add 400 deny all from any to ::1
+		${fwcmd} add 500 deny all from ::1 to any
+	fi
+}
+
+setup_ipv6_mandatory () {
+	[ $ipv6_available -eq 0 ] || return 0
+
+	############
+	# Only in rare cases do you want to change these rules
+	#
+	# ND
+	#
+	# DAD
+	${fwcmd} add pass ipv6-icmp from :: to ff02::/16
+	# RS, RA, NS, NA, redirect...
+	${fwcmd} add pass ipv6-icmp from fe80::/10 to fe80::/10
+	${fwcmd} add pass ipv6-icmp from fe80::/10 to ff02::/16
+
+	# Allow ICMPv6 destination unreach
+	${fwcmd} add pass ipv6-icmp from any to any icmp6types 1
+
+	# Allow NS/NA/toobig (don't filter it out)
+	${fwcmd} add pass ipv6-icmp from any to any icmp6types 2,135,136
 }
 
 if [ -n "${1}" ]; then
 	firewall_type="${1}"
 fi
 
+. /etc/rc.subr
+. /etc/network.subr
+afexists inet6
+ipv6_available=$?
+
 ############
 # Set quiet mode if requested
 #
@@ -109,6 +139,7 @@ esac
 ${fwcmd} -f flush
 
 setup_loopback
+setup_ipv6_mandatory
 
 ############
 # Network Address Translation.  All packets are passed to natd(8)
@@ -166,11 +197,13 @@ case ${firewall_type} in
 	# against people from outside your own network.
 	#
 	# Configuration:
-	#  firewall_client_net:		Network address of local network.
+	#  firewall_client_net:		Network address of local IPv4 network.
+	#  firewall_client_net_ipv6:	Network address of local IPv6 network.
 	############
 
 	# set this to your local network
 	net="$firewall_client_net"
+	net6="$firewall_client_net_ipv6"
 
 	# Allow limited broadcast traffic from my own net.
 	${fwcmd} add pass all from ${net} to 255.255.255.255
@@ -178,6 +211,16 @@ case ${firewall_type} in
 	# Allow any traffic to or from my own net.
 	${fwcmd} add pass all from me to ${net}
 	${fwcmd} add pass all from ${net} to me
+	if [ -n "$net6" ]; then
+		${fwcmd} add pass all from me6 to ${net6}
+		${fwcmd} add pass all from ${net6} to me6
+	fi
+
+	if [ -n "$net6" ]; then
+		# Allow any link-local multicast traffic
+		${fwcmd} add pass all from fe80::/10 to ff02::/16
+		${fwcmd} add pass all from ${net6} to ff02::/16
+	fi
 
 	# Allow TCP through if setup succeeded
 	${fwcmd} add pass tcp from any to any established
@@ -212,23 +255,38 @@ case ${firewall_type} in
 	# on the inside at this machine for those services.
 	#
 	# Configuration:
-	#  firewall_simple_iif:		Inside network interface.
-	#  firewall_simple_inet:	Inside network address.
-	#  firewall_simple_oif:		Outside network interface.
-	#  firewall_simple_onet:	Outside network address.
+	#  firewall_simple_iif:		Inside IPv4 network interface.
+	#  firewall_simple_inet:	Inside IPv4 network address.
+	#  firewall_simple_oif:		Outside IPv4 network interface.
+	#  firewall_simple_onet:	Outside IPv4 network address.
+	#  firewall_simple_iif_ipv6:	Inside IPv6 network interface.
+	#  firewall_simple_inet_ipv6:	Inside IPv6 network prefix.
+	#  firewall_simple_oif_ipv6:	Outside IPv6 network interface.
+	#  firewall_simple_onet_ipv6:	Outside IPv6 network prefix.
 	############
 
 	# set these to your outside interface network
 	oif="$firewall_simple_oif"
 	onet="$firewall_simple_onet"
+	oif6="${firewall_simple_oif_ipv6:-$firewall_simple_oif}"
+	onet6="$firewall_simple_onet_ipv6"
 
 	# set these to your inside interface network
 	iif="$firewall_simple_iif"
 	inet="$firewall_simple_inet"
+	iif6="${firewall_simple_iif_ipv6:-$firewall_simple_iif}"
+	inet6="$firewall_simple_inet_ipv6"
 
 	# Stop spoofing
 	${fwcmd} add deny all from ${inet} to any in via ${oif}
 	${fwcmd} add deny all from ${onet} to any in via ${iif}
+	if [ -n "$inet6" ]; then
+		${fwcmd} add deny all from ${inet6} to any in via ${oif6}
+		if [ -n "$onet6" ]; then
+			${fwcmd} add deny all from ${onet6} to any in \
+			    via ${iif6}
+		fi
+	fi
 
 	# Stop RFC1918 nets on the outside interface
 	${fwcmd} add deny all from any to 10.0.0.0/8 via ${oif}
@@ -254,7 +312,7 @@ case ${firewall_type} in
 	case ${natd_enable} in
 	[Yy][Ee][Ss])
 		if [ -n "${natd_interface}" ]; then
-			${fwcmd} add divert natd all from any to any via ${natd_interface}
+			${fwcmd} add divert natd ip4 from any to any via ${natd_interface}
 		fi
 		;;
 	esac
@@ -273,6 +331,55 @@ case ${firewall_type} in
 	${fwcmd} add deny all from 224.0.0.0/4 to any via ${oif}
 	${fwcmd} add deny all from 240.0.0.0/4 to any via ${oif}
 
+	if [ -n "$inet6" ]; then
+		# Stop unique local unicast address on the outside interface
+		${fwcmd} add deny all from fc00::/7 to any via ${oif6}
+		${fwcmd} add deny all from any to fc00::/7 via ${oif6}
+
+		# Stop site-local on the outside interface
+		${fwcmd} add deny all from fec0::/10 to any via ${oif6}
+		${fwcmd} add deny all from any to fec0::/10 via ${oif6}
+
+		# Disallow "internal" addresses to appear on the wire.
+		${fwcmd} add deny all from ::ffff:0.0.0.0/96 to any \
+		    via ${oif6}
+		${fwcmd} add deny all from any to ::ffff:0.0.0.0/96 \
+		    via ${oif6}
+
+		# Disallow packets to malicious IPv4 compatible prefix.
+		${fwcmd} add deny all from ::224.0.0.0/100 to any via ${oif6}
+		${fwcmd} add deny all from any to ::224.0.0.0/100 via ${oif6}
+		${fwcmd} add deny all from ::127.0.0.0/104 to any via ${oif6}
+		${fwcmd} add deny all from any to ::127.0.0.0/104 via ${oif6}
+		${fwcmd} add deny all from ::0.0.0.0/104 to any via ${oif6}
+		${fwcmd} add deny all from any to ::0.0.0.0/104 via ${oif6}
+		${fwcmd} add deny all from ::255.0.0.0/104 to any via ${oif6}
+		${fwcmd} add deny all from any to ::255.0.0.0/104 via ${oif6}
+
+		${fwcmd} add deny all from ::0.0.0.0/96 to any via ${oif6}
+		${fwcmd} add deny all from any to ::0.0.0.0/96 via ${oif6}
+
+		# Disallow packets to malicious 6to4 prefix.
+		${fwcmd} add deny all from 2002:e000::/20 to any via ${oif6}
+		${fwcmd} add deny all from any to 2002:e000::/20 via ${oif6}
+		${fwcmd} add deny all from 2002:7f00::/24 to any via ${oif6}
+		${fwcmd} add deny all from any to 2002:7f00::/24 via ${oif6}
+		${fwcmd} add deny all from 2002:0000::/24 to any via ${oif6}
+		${fwcmd} add deny all from any to 2002:0000::/24 via ${oif6}
+		${fwcmd} add deny all from 2002:ff00::/24 to any via ${oif6}
+		${fwcmd} add deny all from any to 2002:ff00::/24 via ${oif6}
+
+		${fwcmd} add deny all from 2002:0a00::/24 to any via ${oif6}
+		${fwcmd} add deny all from any to 2002:0a00::/24 via ${oif6}
+		${fwcmd} add deny all from 2002:ac10::/28 to any via ${oif6}
+		${fwcmd} add deny all from any to 2002:ac10::/28 via ${oif6}
+		${fwcmd} add deny all from 2002:c0a8::/32 to any via ${oif6}
+		${fwcmd} add deny all from any to 2002:c0a8::/32 via ${oif6}
+
+		${fwcmd} add deny all from ff05::/16 to any via ${oif6}
+		${fwcmd} add deny all from any to ff05::/16 via ${oif6}
+	fi
+
 	# Allow TCP through if setup succeeded
 	${fwcmd} add pass tcp from any to any established
 
@@ -291,7 +398,11 @@ case ${firewall_type} in
 	${fwcmd} add pass tcp from any to me 80 setup
 
 	# Reject&Log all setup of incoming connections from the outside
-	${fwcmd} add deny log tcp from any to any in via ${oif} setup
+	${fwcmd} add deny log ip4 from any to any in via ${oif} setup proto tcp
+	if [ -n "$inet6" ]; then
+		${fwcmd} add deny log ip6 from any to any in via ${oif6} \
+		    setup proto tcp
+	fi
 
 	# Allow setup of any other TCP connection
 	${fwcmd} add pass tcp from any to any setup
@@ -313,7 +424,7 @@ case ${firewall_type} in
 	#			 	 offers services.
 	#  firewall_allowservices:	List of IPs which has access to
 	#				 $firewall_myservices.
-	#  firewall_trusted:		List of IPs which has full access 
+	#  firewall_trusted:		List of IPv4s which has full access 
 	#				 to this host. Be very carefull 
 	#				 when setting this. This option can
 	#				 seriously degrade the level of 
@@ -324,25 +435,44 @@ case ${firewall_type} in
 	#  firewall_nologports:		List of TCP/UDP ports for which
 	#				 denied incomming packets are not
 	#				 logged.
-	
+	#  firewall_trusted_ipv6:	List of IPv6s which has full access 
+	#				 to this host. Be very carefull 
+	#				 when setting this. This option can
+	#				 seriously degrade the level of 
+	#				 protection provided by the firewall.
+
 	# Allow packets for which a state has been built.
 	${fwcmd} add check-state
 
 	# For services permitted below.
 	${fwcmd} add pass tcp  from me to any established
+	if [ $ipv6_available -eq 0 ]; then
+		${fwcmd} add pass tcp from me6 to any established
+	fi
 
 	# Allow any connection out, adding state for each.
 	${fwcmd} add pass tcp  from me to any setup keep-state
 	${fwcmd} add pass udp  from me to any       keep-state
 	${fwcmd} add pass icmp from me to any       keep-state
+	if [ $ipv6_available -eq 0 ]; then
+		${fwcmd} add pass tcp from me6 to any setup keep-state
+		${fwcmd} add pass udp from me6 to any keep-state
+		${fwcmd} add pass ipv6-icmp from me6 to any keep-state
+	fi
 
 	# Allow DHCP.
 	${fwcmd} add pass udp  from 0.0.0.0 68 to 255.255.255.255 67 out
 	${fwcmd} add pass udp  from any 67     to me 68 in
 	${fwcmd} add pass udp  from any 67     to 255.255.255.255 68 in
+	if [ $ipv6_available -eq 0 ]; then
+		${fwcmd} add pass udp from fe80::/10 to me6 546 in
+	fi
 	# Some servers will ping the IP while trying to decide if it's 
 	# still in use.
 	${fwcmd} add pass icmp from any to any icmptype 8
+	if [ $ipv6_available -eq 0 ]; then
+		${fwcmd} add pass ipv6-icmp from any to any icmp6type 128,129
+	fi
 
 	# Allow "mandatory" ICMP in.
 	${fwcmd} add pass icmp from any to any icmptype 3,4,11
@@ -361,6 +491,9 @@ case ${firewall_type} in
 	for i in ${firewall_allowservices} ; do
 	  for j in ${firewall_myservices} ; do
 	    ${fwcmd} add pass tcp from $i to me $j
+	    if [ $ipv6_available -eq 0 ]; then
+	      ${fwcmd} add pass tcp from $i to me6 $j
+	    fi
 	  done
 	done
 
@@ -370,7 +503,10 @@ case ${firewall_type} in
 	for i in ${firewall_trusted} ; do
 	  ${fwcmd} add pass ip from $i to me
 	done
-	
+	for i in ${firewall_trusted_ipv6} ; do
+	  ${fwcmd} add pass all from $i to me6
+	done
+
 	${fwcmd} add 65000 count ip from any to any
 
 	# Drop packets to ports where we don't want logging
diff --git a/etc/rc.firewall6 b/etc/rc.firewall6
deleted file mode 100644
index 7498bbc68..0000000
--- a/etc/rc.firewall6
+++ /dev/null
@@ -1,295 +0,0 @@
-#!/bin/sh -
-############
-# Setup system for IPv6 firewall service.
-# $FreeBSD$
-
-# Suck in the configuration variables.
-if [ -z "${source_rc_confs_defined}" ]; then
-	if [ -r /etc/defaults/rc.conf ]; then
-		. /etc/defaults/rc.conf
-		source_rc_confs
-	elif [ -r /etc/rc.conf ]; then
-		. /etc/rc.conf
-	fi
-fi
-
-############
-# Define the firewall type in /etc/rc.conf.  Valid values are:
-#   open     - will allow anyone in
-#   client   - will try to protect just this machine
-#   simple   - will try to protect a whole network
-#   closed   - totally disables IP services except via lo0 interface
-#   UNKNOWN  - disables the loading of firewall rules.
-#   filename - will load the rules in the given filename (full path required)
-#
-# For ``client'' and ``simple'' the entries below should be customized
-# appropriately.
-
-############
-#
-# If you don't know enough about packet filtering, we suggest that you
-# take time to read this book:
-#
-#	Building Internet Firewalls, 2nd Edition
-#	Brent Chapman and Elizabeth Zwicky
-#
-#	O'Reilly & Associates, Inc
-#	ISBN 1-56592-871-7
-#	http://www.ora.com/
-#	http://www.oreilly.com/catalog/fire2/
-#
-# For a more advanced treatment of Internet Security read:
-#
-#	Firewalls and Internet Security: Repelling the Wily Hacker, 2nd Edition
-#	William R. Cheswick, Steven M. Bellowin, Aviel D. Rubin
-#
-#	Addison-Wesley / Prentice Hall
-#	ISBN 0-201-63466-X
-#	http://www.pearsonhighered.com/
-#	http://www.pearsonhighered.com/educator/academic/product/0,3110,020163466X,00.html
-#
-
-setup_local () {
-	############
-	# Only in rare cases do you want to change these rules
-	#
-	${fw6cmd} add 100 pass ip6 from any to any via lo0
-	${fw6cmd} add 200 deny ip6 from any to ::1
-	${fw6cmd} add 300 deny ip6 from ::1 to any
-	#
-	# ND
-	#
-	# DAD
-	${fw6cmd} add pass ip6 from :: to ff02::/16 proto ipv6-icmp
-	# RS, RA, NS, NA, redirect...
-	${fw6cmd} add pass ip6 from fe80::/10 to fe80::/10 proto ipv6-icmp
-	${fw6cmd} add pass ip6 from fe80::/10 to ff02::/16 proto ipv6-icmp
-}
-
-if [ -n "${1}" ]; then
-	ipv6_firewall_type="${1}"
-fi
-
-############
-# Set quiet mode if requested
-#
-case ${ipv6_firewall_quiet} in
-[Yy][Ee][Ss])
-	fw6cmd="/sbin/ipfw -q"
-	;;
-*)
-	fw6cmd="/sbin/ipfw"
-	;;
-esac
-
-############
-# Flush out the list before we begin.
-#
-${fw6cmd} -f flush
-
-############
-# If you just configured ipfw in the kernel as a tool to solve network
-# problems or you just want to disallow some particular kinds of traffic
-# then you will want to change the default policy to open.  You can also
-# do this as your only action by setting the ipv6_firewall_type to ``open''.
-#
-# ${fw6cmd} add 65000 pass all from any to any
-
-
-# Prototype setups.
-#
-case ${ipv6_firewall_type} in
-[Oo][Pp][Ee][Nn])
-	setup_local
-	${fw6cmd} add 65000 pass ip6 from any to any
-	;;
-
-[Cc][Ll][Ii][Ee][Nn][Tt])
-	############
-	# This is a prototype setup that will protect your system somewhat
-	# against people from outside your own network.
-	############
-
-	# set these to your network and prefixlen and ip
-	#
-	# This needs more work
-	#
-	net="2001:db8:2:1::"
-	prefixlen="64"
-	ip="2001:db8:2:1::1"
-
-	setup_local
-
-	# Allow any traffic to or from my own net.
-	${fw6cmd} add pass ip6 from ${ip} to ${net}/${prefixlen}
-	${fw6cmd} add pass ip6 from ${net}/${prefixlen} to ${ip}
-
-	# Allow any link-local multicast traffic
-	${fw6cmd} add pass ip6 from fe80::/10 to ff02::/16
-	${fw6cmd} add pass ip6 from ${net}/${prefixlen} to ff02::/16
-
-	# Allow TCP through if setup succeeded
-	${fw6cmd} add pass ip6 from any to any established proto tcp
-
-	# Allow IP fragments to pass through
-	${fw6cmd} add pass ip6 from any to any frag
-
-	# Allow setup of incoming email
-	${fw6cmd} add pass ip6 from any to ${ip} 25 setup proto tcp
-
-	# Allow setup of outgoing TCP connections only
-	${fw6cmd} add pass ip6 from ${ip} to any setup proto tcp
-
-	# Disallow setup of all other TCP connections
-	${fw6cmd} add deny ip6 from any to any setup proto tcp
-
-	# Allow DNS queries out in the world
-	${fw6cmd} add pass ip6 from any 53 to ${ip} proto udp
-	${fw6cmd} add pass ip6 from ${ip} to any 53 proto udp
-
-	# Allow NTP queries out in the world
-	${fw6cmd} add pass ip6 from any 123 to ${ip} proto udp
-	${fw6cmd} add pass ip6 from ${ip} to any 123 proto udp
-
-	# Allow ICMPv6 destination unreach
-	${fw6cmd} add pass ip6 from any to any icmp6types 1 proto ipv6-icmp
-
-	# Allow NS/NA/toobig (don't filter it out)
-	${fw6cmd} add pass ip6 from any to any icmp6types 2,135,136 \
-	    proto ipv6-icmp
-
-	# Everything else is denied by default, unless the
-	# IPV6FIREWALL_DEFAULT_TO_ACCEPT option is set in your kernel
-	# config file.
-	;;
-
-[Ss][Ii][Mm][Pp][Ll][Ee])
-	############
-	# This is a prototype setup for a simple firewall.  Configure this
-	# machine as a DNS and NTP server, and point all the machines
-	# on the inside at this machine for those services.
-	############
-
-	# set these to your outside interface network and prefixlen and ip
-	oif="ed0"
-	onet="2001:db8:2:1::"
-	oprefixlen="64"
-	oip="2001:db8:2:1::1"
-
-	# set these to your inside interface network and prefixlen and ip
-	iif="ed1"
-	inet="2001:db8:2:2::"
-	iprefixlen="64"
-	iip="2001:db8:2:2::1"
-
-	setup_local
-
-	# Stop spoofing
-	${fw6cmd} add deny ip6 from ${inet}/${iprefixlen} to any in via ${oif}
-	${fw6cmd} add deny ip6 from ${onet}/${oprefixlen} to any in via ${iif}
-
-	# Stop unique local unicast address on the outside interface
-	${fw6cmd} add deny ip6 from fc00::/7 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to fc00::/7 via ${oif}
-
-	# Stop site-local on the outside interface
-	${fw6cmd} add deny ip6 from fec0::/10 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to fec0::/10 via ${oif}
-
-	# Disallow "internal" addresses to appear on the wire.
-	${fw6cmd} add deny ip6 from ::ffff:0.0.0.0/96 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to ::ffff:0.0.0.0/96 via ${oif}
-
-	# Disallow packets to malicious IPv4 compatible prefix.
-	${fw6cmd} add deny ip6 from ::224.0.0.0/100 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to ::224.0.0.0/100 via ${oif}
-	${fw6cmd} add deny ip6 from ::127.0.0.0/104 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to ::127.0.0.0/104 via ${oif}
-	${fw6cmd} add deny ip6 from ::0.0.0.0/104 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to ::0.0.0.0/104 via ${oif}
-	${fw6cmd} add deny ip6 from ::255.0.0.0/104 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to ::255.0.0.0/104 via ${oif}
-
-	${fw6cmd} add deny ip6 from ::0.0.0.0/96 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to ::0.0.0.0/96 via ${oif}
-
-	# Disallow packets to malicious 6to4 prefix.
-	${fw6cmd} add deny ip6 from 2002:e000::/20 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to 2002:e000::/20 via ${oif}
-	${fw6cmd} add deny ip6 from 2002:7f00::/24 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to 2002:7f00::/24 via ${oif}
-	${fw6cmd} add deny ip6 from 2002:0000::/24 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to 2002:0000::/24 via ${oif}
-	${fw6cmd} add deny ip6 from 2002:ff00::/24 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to 2002:ff00::/24 via ${oif}
-
-	${fw6cmd} add deny ip6 from 2002:0a00::/24 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to 2002:0a00::/24 via ${oif}
-	${fw6cmd} add deny ip6 from 2002:ac10::/28 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to 2002:ac10::/28 via ${oif}
-	${fw6cmd} add deny ip6 from 2002:c0a8::/32 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to 2002:c0a8::/32 via ${oif}
-
-	${fw6cmd} add deny ip6 from ff05::/16 to any via ${oif}
-	${fw6cmd} add deny ip6 from any to ff05::/16 via ${oif}
-
-	# Allow TCP through if setup succeeded
-	${fw6cmd} add pass tcp from any to any established
-
-	# Allow IP fragments to pass through
-	${fw6cmd} add pass ip6 from any to any frag
-
-	# Allow setup of incoming email
-	${fw6cmd} add pass ip6 from any to ${oip} 25 setup proto tcp
-
-	# Allow access to our DNS
-	${fw6cmd} add pass ip6 from any to ${oip} 53 setup proto tcp
-	${fw6cmd} add pass ip6 from any to ${oip} 53 proto udp
-	${fw6cmd} add pass ip6 from ${oip} 53 to any proto udp
-
-	# Allow access to our WWW
-	${fw6cmd} add pass ip6 from any to ${oip} 80 setup proto tcp
-
-	# Reject&Log all setup of incoming connections from the outside
-	${fw6cmd} add deny log ip6 from any to any in via ${oif} setup \
-	    proto tcp
-
-	# Allow setup of any other TCP connection
-	${fw6cmd} add pass ip6 from any to any setup proto tcp
-
-	# Allow DNS queries out in the world
-	${fw6cmd} add pass ip6 from any 53 to ${oip} proto udp
-	${fw6cmd} add pass ip6 from ${oip} to any 53 proto udp
-
-	# Allow NTP queries out in the world
-	${fw6cmd} add pass ip6 from any 123 to ${oip} proto udp
-	${fw6cmd} add pass ip6 from ${oip} to any 123 proto udp
-
-	# Allow RIPng
-	#${fw6cmd} add pass ip6 from fe80::/10 521 to ff02::9 521 proto udp
-	#${fw6cmd} add pass ip6 from fe80::/10 521 to fe80::/10 521 proto udp
-
-	# Allow ICMPv6 destination unreach
-	${fw6cmd} add pass ip6 from any to any icmp6types 1 proto ipv6-icmp
-
-	# Allow NS/NA/toobig (don't filter it out)
-	${fw6cmd} add pass ip6 from any to any icmp6types 2,135,136 \
-	     proto ipv6-icmp
-
-	# Everything else is denied by default, unless the
-	# IPV6FIREWALL_DEFAULT_TO_ACCEPT option is set in your kernel
-	# config file.
-	;;
-
-[Cc][Ll][Oo][Ss][Ee][Dd])
-	# Only enable the loopback interface
-	${fw6cmd} add 100 pass ip6 from any to any via lo0
-	;;
-[Uu][Nn][Kk][Nn][Oo][Ww][Nn])
-	;;
-*)
-	if [ -r "${ipv6_firewall_type}" ]; then
-		${fw6cmd} ${ipv6_firewall_flags} ${ipv6_firewall_type}
-	fi
-	;;
-esac