src/_updown/_updown.in - third_party/strongswan/strongswan - Git at Google

 #!/bin/sh
 # default updown script
 #
 # Copyright (C) 2003-2004 Nigel Meteringham
 # Copyright (C) 2003-2004 Tuomo Soini
 # Copyright (C) 2002-2004 Michael Richardson
 # Copyright (C) 2005-2007 Andreas Steffen <andreas.steffen@strongswan.org>
 #
 # This program is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by the
 # Free Software Foundation; either version 2 of the License, or (at your
 # option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
 #
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 # or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 # for more details.

 # CAUTION:  Installing a new version of strongSwan will install a new
 # copy of this script, wiping out any custom changes you make.  If
 # you need changes, make a copy of this under another name, and customize
 # that, and use the (left/right)updown parameters in ipsec.conf to make
 # strongSwan use yours instead of this default one.

 #      PLUTO_VERSION
 #              indicates  what  version of this interface is being
 #              used.  This document describes version  1.1.   This
 #              is upwardly compatible with version 1.0.
 #
 #       PLUTO_VERB
 #              specifies the name of the operation to be performed
 #              (prepare-host, prepare-client, up-host, up-client,
 #              down-host, or down-client).  If the address family
 #              for security gateway to security gateway communica-
 #              tions is IPv6, then a suffix of -v6 is added to the
 #              verb.
 #
 #       PLUTO_CONNECTION
 #              is the name of the  connection  for  which  we  are
 #              routing.
 #
 #       PLUTO_INTERFACE
 #              is the name of the ipsec interface to be used.
 #
 #       PLUTO_REQID
 #              is the reqid of the AH|ESP policy
 #
 #       PLUTO_PROTO
 #              is the negotiated IPsec protocol, ah|esp
 #
 #       PLUTO_IPCOMP
 #              is not empty if IPComp was negotiated
 #
 #       PLUTO_UNIQUEID
 #              is the unique identifier of the associated IKE_SA
 #
 #       PLUTO_ME
 #              is the IP address of our host.
 #
 #       PLUTO_MY_ID
 #              is the ID of our host.
 #
 #       PLUTO_MY_CLIENT
 #              is the IP address / count of our client subnet.  If
 #              the  client  is  just  the  host,  this will be the
 #              host's own IP address / max (where max  is  32  for
 #              IPv4 and 128 for IPv6).
 #
 #       PLUTO_MY_SOURCEIP
 #       PLUTO_MY_SOURCEIP4_$i
 #       PLUTO_MY_SOURCEIP6_$i
 #              contains IPv4/IPv6 virtual IP received from a responder,
 #              $i enumerates from 1 to the number of IP per address family.
 #              PLUTO_MY_SOURCEIP is a legacy variable and equal to the first
 #              virtual IP, IPv4 or IPv6.
 #
 #       PLUTO_MY_PROTOCOL
 #              is the IP protocol that will be transported.
 #
 #       PLUTO_MY_PORT
 #              is  the  UDP/TCP  port  to  which  the IPsec SA  is
 #              restricted on our side.  For ICMP/ICMPv6 this contains the
 #              message type, and PLUTO_PEER_PORT the message code.
 #
 #       PLUTO_PEER
 #              is the IP address of our peer.
 #
 #       PLUTO_PEER_ID
 #              is the ID of our peer.
 #
 #       PLUTO_PEER_CLIENT
 #              is the IP address / count of the peer's client sub-
 #              net.   If the client is just the peer, this will be
 #              the peer's own IP address / max (where  max  is  32
 #              for IPv4 and 128 for IPv6).
 #
 #       PLUTO_PEER_SOURCEIP
 #       PLUTO_PEER_SOURCEIP4_$i
 #       PLUTO_PEER_SOURCEIP6_$i
 #              contains IPv4/IPv6 virtual IP sent to an initiator,
 #              $i enumerates from 1 to the number of IP per address family.
 #              PLUTO_PEER_SOURCEIP is a legacy variable and equal to the first
 #              virtual IP, IPv4 or IPv6.
 #
 #       PLUTO_PEER_PROTOCOL
 #              is the IP protocol that will be transported.
 #
 #       PLUTO_PEER_PORT
 #              is  the  UDP/TCP  port  to  which  the IPsec SA  is
 #              restricted on the peer side.  For ICMP/ICMPv6 this contains the
 #              message code, and PLUTO_MY_PORT the message type.
 #
 #       PLUTO_XAUTH_ID
 #              is an optional user ID employed by the XAUTH protocol
 #
 #       PLUTO_MARK_IN
 #              is an optional XFRM mark set on the inbound IPsec SA
 #
 #       PLUTO_MARK_OUT
 #              is an optional XFRM mark set on the outbound IPsec SA
 #
 #       PLUTO_IF_ID_IN
 #              is an optional XFRM interface ID set on the inbound IPsec SA
 #
 #       PLUTO_IF_ID_OUT
 #              is an optional XFRM interface ID set on the outbound IPsec SA
 #
 #       PLUTO_UDP_ENC
 #              contains the remote UDP port in the case of ESP_IN_UDP
 #              encapsulation
 #
 #       PLUTO_DNS4_$i
 #       PLUTO_DNS6_$i
 #              contains IPv4/IPv6 DNS server attribute received from a
 #              responder, $i enumerates from 1 to the number of servers per
 #              address family.
 #

 # define a minimum PATH environment in case it is not set
 PATH="/sbin:/bin:/usr/sbin:/usr/bin:@sbindir@"
 export PATH

 # comment to disable logging VPN connections to syslog
 VPN_LOGGING=1
 #
 # tag put in front of each log entry:
 TAG=vpn
 #
 # syslog facility and priority used:
 FAC_PRIO=local0.notice
 #
 # to create a special vpn logging file, put the following line into
 # the syslog configuration file /etc/syslog.conf:
 #
 # local0.notice                   -/var/log/vpn

 # check interface version
 case "$PLUTO_VERSION" in
 1.[0|1])	# Older release?!?  Play it safe, script may be using new features.
 	echo "$0: obsolete interface version \`$PLUTO_VERSION'," >&2
 	echo "$0: 	called by obsolete release?" >&2
 	exit 2
 	;;
 1.*)	;;
 *)	echo "$0: unknown interface version \`$PLUTO_VERSION'" >&2
 	exit 2
 	;;
 esac

 # check parameter(s)
 case "$1:$*" in
 ':')			# no parameters
 	;;
 iptables:iptables)	# due to (left/right)firewall; for default script only
 	;;
 custom:*)		# custom parameters (see above CAUTION comment)
 	;;
 *)	echo "$0: unknown parameters \`$*'" >&2
 	exit 2
 	;;
 esac

 IPSEC_POLICY="-m policy --pol ipsec --proto $PLUTO_PROTO --reqid $PLUTO_REQID"
 IPSEC_POLICY_IN="$IPSEC_POLICY --dir in"
 IPSEC_POLICY_OUT="$IPSEC_POLICY --dir out"

 # use protocol specific options to set ports
 case "$PLUTO_MY_PROTOCOL" in
 1)	# ICMP
 	ICMP_TYPE_OPTION="--icmp-type"
 	;;
 58)	# ICMPv6
 	ICMP_TYPE_OPTION="--icmpv6-type"
 	;;
 *)
 	;;
 esac

 # are there port numbers?
 if [ "$PLUTO_MY_PORT" != 0 ]
 then
 	if [ -n "$ICMP_TYPE_OPTION" ]
 	then
 		S_MY_PORT="$ICMP_TYPE_OPTION $PLUTO_MY_PORT"
 		D_MY_PORT="$ICMP_TYPE_OPTION $PLUTO_MY_PORT"
 	else
 		S_MY_PORT="--sport $PLUTO_MY_PORT"
 		D_MY_PORT="--dport $PLUTO_MY_PORT"
 	fi
 fi
 if [ "$PLUTO_PEER_PORT" != 0 ]
 then
 	if [ -n "$ICMP_TYPE_OPTION" ]
 	then
 		# the syntax is --icmp[v6]-type type[/code], so add it to the existing option
 		S_MY_PORT="$S_MY_PORT/$PLUTO_PEER_PORT"
 		D_MY_PORT="$D_MY_PORT/$PLUTO_PEER_PORT"
 	else
 		S_PEER_PORT="--sport $PLUTO_PEER_PORT"
 		D_PEER_PORT="--dport $PLUTO_PEER_PORT"
 	fi
 fi

 case "$PLUTO_VERB:$1" in
 up-host:)
 	# connection to me coming up
 	# If you are doing a custom version, firewall commands go here.
 	;;
 down-host:)
 	# connection to me going down
 	# If you are doing a custom version, firewall commands go here.
 	;;
 up-client:)
 	# connection to my client subnet coming up
 	# If you are doing a custom version, firewall commands go here.
 	;;
 down-client:)
 	# connection to my client subnet going down
 	# If you are doing a custom version, firewall commands go here.
 	;;
 up-host:iptables)
 	# connection to me, with (left/right)firewall=yes, coming up
 	# This is used only by the default updown script, not by your custom
 	# ones, so do not mess with it; see CAUTION comment up at top.
 	iptables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	    -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	    -d $PLUTO_ME $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
 	iptables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	    -s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
 	    -d $PLUTO_PEER_CLIENT $D_PEER_PORT -j ACCEPT
 	#
 	# allow IPIP traffic because of the implicit SA created by the kernel if
 	# IPComp is used (for small inbound packets that are not compressed)
 	if [ -n "$PLUTO_IPCOMP" ]
 	then
 	  iptables -I INPUT 1 -i $PLUTO_INTERFACE -p 4 \
 	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# log IPsec host connection setup
 	if [ $VPN_LOGGING ]
 	then
 	  if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
 	  then
 	    logger -t $TAG -p $FAC_PRIO \
 	      "+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
 	  else
 	    logger -t $TAG -p $FAC_PRIO \
 	      "+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
 	  fi
 	fi
 	;;
 down-host:iptables)
 	# connection to me, with (left/right)firewall=yes, going down
 	# This is used only by the default updown script, not by your custom
 	# ones, so do not mess with it; see CAUTION comment up at top.
 	iptables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	    -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	    -d $PLUTO_ME $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
 	iptables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	    -s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
 	    -d $PLUTO_PEER_CLIENT $D_PEER_PORT -j ACCEPT
 	#
 	# IPIP exception teardown
 	if [ -n "$PLUTO_IPCOMP" ]
 	then
 	  iptables -D INPUT -i $PLUTO_INTERFACE -p 4 \
 	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# log IPsec host connection teardown
 	if [ $VPN_LOGGING ]
 	then
 	  if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
 	  then
 	    logger -t $TAG -p $FAC_PRIO -- \
 	      "- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
 	  else
 	    logger -t $TAG -p $FAC_PRIO -- \
 	    "- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
 	  fi
 	fi
 	;;
 up-client:iptables)
 	# connection to client subnet, with (left/right)firewall=yes, coming up
 	# This is used only by the default updown script, not by your custom
 	# ones, so do not mess with it; see CAUTION comment up at top.
 	if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/32" ]
 	then
 	  iptables -I FORWARD 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	      -s $PLUTO_MY_CLIENT $S_MY_PORT \
 	      -d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
 	  iptables -I FORWARD 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	      -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	      -d $PLUTO_MY_CLIENT $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# a virtual IP requires an INPUT and OUTPUT rule on the host
 	# or sometimes host access via the internal IP is needed
 	if [ -n "$PLUTO_MY_SOURCEIP" -o -n "$PLUTO_HOST_ACCESS" ]
 	then
 	  iptables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	      -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	      -d $PLUTO_MY_CLIENT $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
 	  iptables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	      -s $PLUTO_MY_CLIENT $S_MY_PORT \
 	      -d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
 	fi
 	#
 	# allow IPIP traffic because of the implicit SA created by the kernel if
 	# IPComp is used (for small inbound packets that are not compressed).
 	# INPUT is correct here even for forwarded traffic.
 	if [ -n "$PLUTO_IPCOMP" ]
 	then
 	  iptables -I INPUT 1 -i $PLUTO_INTERFACE -p 4 \
 	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# log IPsec client connection setup
 	if [ $VPN_LOGGING ]
 	then
 	  if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
 	  then
 	    logger -t $TAG -p $FAC_PRIO \
 	      "+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
 	  else
 	    logger -t $TAG -p $FAC_PRIO \
 	      "+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
 	  fi
 	fi
 	;;
 down-client:iptables)
 	# connection to client subnet, with (left/right)firewall=yes, going down
 	# This is used only by the default updown script, not by your custom
 	# ones, so do not mess with it; see CAUTION comment up at top.
 	if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/32" ]
 	then
 	  iptables -D FORWARD -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	      -s $PLUTO_MY_CLIENT $S_MY_PORT \
 	      -d $PLUTO_PEER_CLIENT $D_PEER_PORT \
 	         $IPSEC_POLICY_OUT -j ACCEPT
 	  iptables -D FORWARD -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	      -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	      -d $PLUTO_MY_CLIENT $D_MY_PORT \
 	         $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# a virtual IP requires an INPUT and OUTPUT rule on the host
 	# or sometimes host access via the internal IP is needed
 	if [ -n "$PLUTO_MY_SOURCEIP" -o -n "$PLUTO_HOST_ACCESS" ]
 	then
 	  iptables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	      -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	      -d $PLUTO_MY_CLIENT $D_MY_PORT \
 	         $IPSEC_POLICY_IN -j ACCEPT
 	  iptables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	      -s $PLUTO_MY_CLIENT $S_MY_PORT \
 	      -d $PLUTO_PEER_CLIENT $D_PEER_PORT \
 	         $IPSEC_POLICY_OUT -j ACCEPT
 	fi
 	#
 	# IPIP exception teardown
 	if [ -n "$PLUTO_IPCOMP" ]
 	then
 	  iptables -D INPUT -i $PLUTO_INTERFACE -p 4 \
 	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# log IPsec client connection teardown
 	if [ $VPN_LOGGING ]
 	then
 	  if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
 	  then
 	    logger -t $TAG -p $FAC_PRIO -- \
 	      "- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
 	  else
 	    logger -t $TAG -p $FAC_PRIO -- \
 	      "- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
 	  fi
 	fi
 	;;
 #
 # IPv6
 #
 up-host-v6:)
 	# connection to me coming up
 	# If you are doing a custom version, firewall commands go here.
 	;;
 down-host-v6:)
 	# connection to me going down
 	# If you are doing a custom version, firewall commands go here.
 	;;
 up-client-v6:)
 	# connection to my client subnet coming up
 	# If you are doing a custom version, firewall commands go here.
 	;;
 down-client-v6:)
 	# connection to my client subnet going down
 	# If you are doing a custom version, firewall commands go here.
 	;;
 up-host-v6:iptables)
 	# connection to me, with (left/right)firewall=yes, coming up
 	# This is used only by the default updown script, not by your custom
 	# ones, so do not mess with it; see CAUTION comment up at top.
 	ip6tables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	    -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	    -d $PLUTO_ME $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
 	ip6tables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	    -s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
 	    -d $PLUTO_PEER_CLIENT $D_PEER_PORT -j ACCEPT
 	#
 	# allow IP6IP6 traffic because of the implicit SA created by the kernel if
 	# IPComp is used (for small inbound packets that are not compressed)
 	if [ -n "$PLUTO_IPCOMP" ]
 	then
 	  ip6tables -I INPUT 1 -i $PLUTO_INTERFACE -p 41 \
 	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# log IPsec host connection setup
 	if [ $VPN_LOGGING ]
 	then
 	  if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/128" ]
 	  then
 	    logger -t $TAG -p $FAC_PRIO \
 	      "+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
 	  else
 	    logger -t $TAG -p $FAC_PRIO \
 	      "+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
 	  fi
 	fi
 	;;
 down-host-v6:iptables)
 	# connection to me, with (left/right)firewall=yes, going down
 	# This is used only by the default updown script, not by your custom
 	# ones, so do not mess with it; see CAUTION comment up at top.
 	ip6tables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	    -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	    -d $PLUTO_ME $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
 	ip6tables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	    -s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
 	    -d $PLUTO_PEER_CLIENT $D_PEER_PORT -j ACCEPT
 	#
 	# IP6IP6 exception teardown
 	if [ -n "$PLUTO_IPCOMP" ]
 	then
 	  ip6tables -D INPUT -i $PLUTO_INTERFACE -p 41 \
 	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# log IPsec host connection teardown
 	if [ $VPN_LOGGING ]
 	then
 	  if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/128" ]
 	  then
 	    logger -t $TAG -p $FAC_PRIO -- \
 	      "- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
 	  else
 	    logger -t $TAG -p $FAC_PRIO -- \
 	    "- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
 	  fi
 	fi
 	;;
 up-client-v6:iptables)
 	# connection to client subnet, with (left/right)firewall=yes, coming up
 	# This is used only by the default updown script, not by your custom
 	# ones, so do not mess with it; see CAUTION comment up at top.
 	if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/128" ]
 	then
 	  ip6tables -I FORWARD 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	      -s $PLUTO_MY_CLIENT $S_MY_PORT \
 	      -d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
 	  ip6tables -I FORWARD 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	      -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	      -d $PLUTO_MY_CLIENT $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# a virtual IP requires an INPUT and OUTPUT rule on the host
 	# or sometimes host access via the internal IP is needed
 	if [ -n "$PLUTO_MY_SOURCEIP" -o -n "$PLUTO_HOST_ACCESS" ]
 	then
 	  ip6tables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	      -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	      -d $PLUTO_MY_CLIENT $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
 	  ip6tables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	      -s $PLUTO_MY_CLIENT $S_MY_PORT \
 	      -d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
 	fi
 	#
 	# allow IP6IP6 traffic because of the implicit SA created by the kernel if
 	# IPComp is used (for small inbound packets that are not compressed).
 	# INPUT is correct here even for forwarded traffic.
 	if [ -n "$PLUTO_IPCOMP" ]
 	then
 	  ip6tables -I INPUT 1 -i $PLUTO_INTERFACE -p 41 \
 	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# log IPsec client connection setup
 	if [ $VPN_LOGGING ]
 	then
 	  if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/128" ]
 	  then
 	    logger -t $TAG -p $FAC_PRIO \
 	      "+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
 	  else
 	    logger -t $TAG -p $FAC_PRIO \
 	      "+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
 	  fi
 	fi
 	;;
 down-client-v6:iptables)
 	# connection to client subnet, with (left/right)firewall=yes, going down
 	# This is used only by the default updown script, not by your custom
 	# ones, so do not mess with it; see CAUTION comment up at top.
 	if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/128" ]
 	then
 	  ip6tables -D FORWARD -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	      -s $PLUTO_MY_CLIENT $S_MY_PORT \
 	      -d $PLUTO_PEER_CLIENT $D_PEER_PORT \
 	         $IPSEC_POLICY_OUT -j ACCEPT
 	  ip6tables -D FORWARD -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	      -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	      -d $PLUTO_MY_CLIENT $D_MY_PORT \
 	         $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# a virtual IP requires an INPUT and OUTPUT rule on the host
 	# or sometimes host access via the internal IP is needed
 	if [ -n "$PLUTO_MY_SOURCEIP" -o -n "$PLUTO_HOST_ACCESS" ]
 	then
 	  ip6tables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
 	      -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
 	      -d $PLUTO_MY_CLIENT $D_MY_PORT \
 	         $IPSEC_POLICY_IN -j ACCEPT
 	  ip6tables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
 	      -s $PLUTO_MY_CLIENT $S_MY_PORT \
 	      -d $PLUTO_PEER_CLIENT $D_PEER_PORT \
 	         $IPSEC_POLICY_OUT -j ACCEPT
 	fi
 	#
 	# IP6IP6 exception teardown
 	if [ -n "$PLUTO_IPCOMP" ]
 	then
 	  ip6tables -D INPUT -i $PLUTO_INTERFACE -p 41 \
 	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
 	fi
 	#
 	# log IPsec client connection teardown
 	if [ $VPN_LOGGING ]
 	then
 	  if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/128" ]
 	  then
 	    logger -t $TAG -p $FAC_PRIO -- \
 	      "- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
 	  else
 	    logger -t $TAG -p $FAC_PRIO -- \
 	      "- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
 	  fi
 	fi
 	;;
 *)	echo "$0: unknown verb \`$PLUTO_VERB' or parameter \`$1'" >&2
 	exit 1
 	;;
 esac
	#!/bin/sh
	# default updown script
	#
	# Copyright (C) 2003-2004 Nigel Meteringham
	# Copyright (C) 2003-2004 Tuomo Soini
	# Copyright (C) 2002-2004 Michael Richardson
	# Copyright (C) 2005-2007 Andreas Steffen <andreas.steffen@strongswan.org>
	#
	# This program is free software; you can redistribute it and/or modify it
	# under the terms of the GNU General Public License as published by the
	# Free Software Foundation; either version 2 of the License, or (at your
	# option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
	#
	# This program is distributed in the hope that it will be useful, but
	# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	# for more details.

	# CAUTION: Installing a new version of strongSwan will install a new
	# copy of this script, wiping out any custom changes you make. If
	# you need changes, make a copy of this under another name, and customize
	# that, and use the (left/right)updown parameters in ipsec.conf to make
	# strongSwan use yours instead of this default one.

	# PLUTO_VERSION
	# indicates what version of this interface is being
	# used. This document describes version 1.1. This
	# is upwardly compatible with version 1.0.
	#
	# PLUTO_VERB
	# specifies the name of the operation to be performed
	# (prepare-host, prepare-client, up-host, up-client,
	# down-host, or down-client). If the address family
	# for security gateway to security gateway communica-
	# tions is IPv6, then a suffix of -v6 is added to the
	# verb.
	#
	# PLUTO_CONNECTION
	# is the name of the connection for which we are
	# routing.
	#
	# PLUTO_INTERFACE
	# is the name of the ipsec interface to be used.
	#
	# PLUTO_REQID
	# is the reqid of the AH\|ESP policy
	#
	# PLUTO_PROTO
	# is the negotiated IPsec protocol, ah\|esp
	#
	# PLUTO_IPCOMP
	# is not empty if IPComp was negotiated
	#
	# PLUTO_UNIQUEID
	# is the unique identifier of the associated IKE_SA
	#
	# PLUTO_ME
	# is the IP address of our host.
	#
	# PLUTO_MY_ID
	# is the ID of our host.
	#
	# PLUTO_MY_CLIENT
	# is the IP address / count of our client subnet. If
	# the client is just the host, this will be the
	# host's own IP address / max (where max is 32 for
	# IPv4 and 128 for IPv6).
	#
	# PLUTO_MY_SOURCEIP
	# PLUTO_MY_SOURCEIP4_$i
	# PLUTO_MY_SOURCEIP6_$i
	# contains IPv4/IPv6 virtual IP received from a responder,
	# $i enumerates from 1 to the number of IP per address family.
	# PLUTO_MY_SOURCEIP is a legacy variable and equal to the first
	# virtual IP, IPv4 or IPv6.
	#
	# PLUTO_MY_PROTOCOL
	# is the IP protocol that will be transported.
	#
	# PLUTO_MY_PORT
	# is the UDP/TCP port to which the IPsec SA is
	# restricted on our side. For ICMP/ICMPv6 this contains the
	# message type, and PLUTO_PEER_PORT the message code.
	#
	# PLUTO_PEER
	# is the IP address of our peer.
	#
	# PLUTO_PEER_ID
	# is the ID of our peer.
	#
	# PLUTO_PEER_CLIENT
	# is the IP address / count of the peer's client sub-
	# net. If the client is just the peer, this will be
	# the peer's own IP address / max (where max is 32
	# for IPv4 and 128 for IPv6).
	#
	# PLUTO_PEER_SOURCEIP
	# PLUTO_PEER_SOURCEIP4_$i
	# PLUTO_PEER_SOURCEIP6_$i
	# contains IPv4/IPv6 virtual IP sent to an initiator,
	# $i enumerates from 1 to the number of IP per address family.
	# PLUTO_PEER_SOURCEIP is a legacy variable and equal to the first
	# virtual IP, IPv4 or IPv6.
	#
	# PLUTO_PEER_PROTOCOL
	# is the IP protocol that will be transported.
	#
	# PLUTO_PEER_PORT
	# is the UDP/TCP port to which the IPsec SA is
	# restricted on the peer side. For ICMP/ICMPv6 this contains the
	# message code, and PLUTO_MY_PORT the message type.
	#
	# PLUTO_XAUTH_ID
	# is an optional user ID employed by the XAUTH protocol
	#
	# PLUTO_MARK_IN
	# is an optional XFRM mark set on the inbound IPsec SA
	#
	# PLUTO_MARK_OUT
	# is an optional XFRM mark set on the outbound IPsec SA
	#
	# PLUTO_IF_ID_IN
	# is an optional XFRM interface ID set on the inbound IPsec SA
	#
	# PLUTO_IF_ID_OUT
	# is an optional XFRM interface ID set on the outbound IPsec SA
	#
	# PLUTO_UDP_ENC
	# contains the remote UDP port in the case of ESP_IN_UDP
	# encapsulation
	#
	# PLUTO_DNS4_$i
	# PLUTO_DNS6_$i
	# contains IPv4/IPv6 DNS server attribute received from a
	# responder, $i enumerates from 1 to the number of servers per
	# address family.
	#

	# define a minimum PATH environment in case it is not set
	PATH="/sbin:/bin:/usr/sbin:/usr/bin:@sbindir@"
	export PATH

	# comment to disable logging VPN connections to syslog
	VPN_LOGGING=1
	#
	# tag put in front of each log entry:
	TAG=vpn
	#
	# syslog facility and priority used:
	FAC_PRIO=local0.notice
	#
	# to create a special vpn logging file, put the following line into
	# the syslog configuration file /etc/syslog.conf:
	#
	# local0.notice -/var/log/vpn

	# check interface version
	case "$PLUTO_VERSION" in
	1.[0\|1]) # Older release?!? Play it safe, script may be using new features.
	echo "$0: obsolete interface version \`$PLUTO_VERSION'," >&2
	echo "$0: called by obsolete release?" >&2
	exit 2
	;;
	1.*) ;;
	*) echo "$0: unknown interface version \`$PLUTO_VERSION'" >&2
	exit 2
	;;
	esac

	# check parameter(s)
	case "$1:$*" in
	':') # no parameters
	;;
	iptables:iptables) # due to (left/right)firewall; for default script only
	;;
	custom:*) # custom parameters (see above CAUTION comment)
	;;
	) echo "$0: unknown parameters \`$'" >&2
	exit 2
	;;
	esac

	IPSEC_POLICY="-m policy --pol ipsec --proto $PLUTO_PROTO --reqid $PLUTO_REQID"
	IPSEC_POLICY_IN="$IPSEC_POLICY --dir in"
	IPSEC_POLICY_OUT="$IPSEC_POLICY --dir out"

	# use protocol specific options to set ports
	case "$PLUTO_MY_PROTOCOL" in
	1) # ICMP
	ICMP_TYPE_OPTION="--icmp-type"
	;;
	58) # ICMPv6
	ICMP_TYPE_OPTION="--icmpv6-type"
	;;
	*)
	;;
	esac

	# are there port numbers?
	if [ "$PLUTO_MY_PORT" != 0 ]
	then
	if [ -n "$ICMP_TYPE_OPTION" ]
	then
	S_MY_PORT="$ICMP_TYPE_OPTION $PLUTO_MY_PORT"
	D_MY_PORT="$ICMP_TYPE_OPTION $PLUTO_MY_PORT"
	else
	S_MY_PORT="--sport $PLUTO_MY_PORT"
	D_MY_PORT="--dport $PLUTO_MY_PORT"
	fi
	fi
	if [ "$PLUTO_PEER_PORT" != 0 ]
	then
	if [ -n "$ICMP_TYPE_OPTION" ]
	then
	# the syntax is --icmp[v6]-type type[/code], so add it to the existing option
	S_MY_PORT="$S_MY_PORT/$PLUTO_PEER_PORT"
	D_MY_PORT="$D_MY_PORT/$PLUTO_PEER_PORT"
	else
	S_PEER_PORT="--sport $PLUTO_PEER_PORT"
	D_PEER_PORT="--dport $PLUTO_PEER_PORT"
	fi
	fi

	case "$PLUTO_VERB:$1" in
	up-host:)
	# connection to me coming up
	# If you are doing a custom version, firewall commands go here.
	;;
	down-host:)
	# connection to me going down
	# If you are doing a custom version, firewall commands go here.
	;;
	up-client:)
	# connection to my client subnet coming up
	# If you are doing a custom version, firewall commands go here.
	;;
	down-client:)
	# connection to my client subnet going down
	# If you are doing a custom version, firewall commands go here.
	;;
	up-host:iptables)
	# connection to me, with (left/right)firewall=yes, coming up
	# This is used only by the default updown script, not by your custom
	# ones, so do not mess with it; see CAUTION comment up at top.
	iptables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_ME $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
	iptables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT -j ACCEPT
	#
	# allow IPIP traffic because of the implicit SA created by the kernel if
	# IPComp is used (for small inbound packets that are not compressed)
	if [ -n "$PLUTO_IPCOMP" ]
	then
	iptables -I INPUT 1 -i $PLUTO_INTERFACE -p 4 \
	-s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# log IPsec host connection setup
	if [ $VPN_LOGGING ]
	then
	if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
	then
	logger -t $TAG -p $FAC_PRIO \
	"+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
	else
	logger -t $TAG -p $FAC_PRIO \
	"+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
	fi
	fi
	;;
	down-host:iptables)
	# connection to me, with (left/right)firewall=yes, going down
	# This is used only by the default updown script, not by your custom
	# ones, so do not mess with it; see CAUTION comment up at top.
	iptables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_ME $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
	iptables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT -j ACCEPT
	#
	# IPIP exception teardown
	if [ -n "$PLUTO_IPCOMP" ]
	then
	iptables -D INPUT -i $PLUTO_INTERFACE -p 4 \
	-s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# log IPsec host connection teardown
	if [ $VPN_LOGGING ]
	then
	if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
	then
	logger -t $TAG -p $FAC_PRIO -- \
	"- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
	else
	logger -t $TAG -p $FAC_PRIO -- \
	"- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
	fi
	fi
	;;
	up-client:iptables)
	# connection to client subnet, with (left/right)firewall=yes, coming up
	# This is used only by the default updown script, not by your custom
	# ones, so do not mess with it; see CAUTION comment up at top.
	if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/32" ]
	then
	iptables -I FORWARD 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_MY_CLIENT $S_MY_PORT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
	iptables -I FORWARD 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_MY_CLIENT $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# a virtual IP requires an INPUT and OUTPUT rule on the host
	# or sometimes host access via the internal IP is needed
	if [ -n "$PLUTO_MY_SOURCEIP" -o -n "$PLUTO_HOST_ACCESS" ]
	then
	iptables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_MY_CLIENT $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
	iptables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_MY_CLIENT $S_MY_PORT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
	fi
	#
	# allow IPIP traffic because of the implicit SA created by the kernel if
	# IPComp is used (for small inbound packets that are not compressed).
	# INPUT is correct here even for forwarded traffic.
	if [ -n "$PLUTO_IPCOMP" ]
	then
	iptables -I INPUT 1 -i $PLUTO_INTERFACE -p 4 \
	-s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# log IPsec client connection setup
	if [ $VPN_LOGGING ]
	then
	if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
	then
	logger -t $TAG -p $FAC_PRIO \
	"+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
	else
	logger -t $TAG -p $FAC_PRIO \
	"+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
	fi
	fi
	;;
	down-client:iptables)
	# connection to client subnet, with (left/right)firewall=yes, going down
	# This is used only by the default updown script, not by your custom
	# ones, so do not mess with it; see CAUTION comment up at top.
	if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/32" ]
	then
	iptables -D FORWARD -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_MY_CLIENT $S_MY_PORT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT \
	$IPSEC_POLICY_OUT -j ACCEPT
	iptables -D FORWARD -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_MY_CLIENT $D_MY_PORT \
	$IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# a virtual IP requires an INPUT and OUTPUT rule on the host
	# or sometimes host access via the internal IP is needed
	if [ -n "$PLUTO_MY_SOURCEIP" -o -n "$PLUTO_HOST_ACCESS" ]
	then
	iptables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_MY_CLIENT $D_MY_PORT \
	$IPSEC_POLICY_IN -j ACCEPT
	iptables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_MY_CLIENT $S_MY_PORT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT \
	$IPSEC_POLICY_OUT -j ACCEPT
	fi
	#
	# IPIP exception teardown
	if [ -n "$PLUTO_IPCOMP" ]
	then
	iptables -D INPUT -i $PLUTO_INTERFACE -p 4 \
	-s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# log IPsec client connection teardown
	if [ $VPN_LOGGING ]
	then
	if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
	then
	logger -t $TAG -p $FAC_PRIO -- \
	"- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
	else
	logger -t $TAG -p $FAC_PRIO -- \
	"- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
	fi
	fi
	;;
	#
	# IPv6
	#
	up-host-v6:)
	# connection to me coming up
	# If you are doing a custom version, firewall commands go here.
	;;
	down-host-v6:)
	# connection to me going down
	# If you are doing a custom version, firewall commands go here.
	;;
	up-client-v6:)
	# connection to my client subnet coming up
	# If you are doing a custom version, firewall commands go here.
	;;
	down-client-v6:)
	# connection to my client subnet going down
	# If you are doing a custom version, firewall commands go here.
	;;
	up-host-v6:iptables)
	# connection to me, with (left/right)firewall=yes, coming up
	# This is used only by the default updown script, not by your custom
	# ones, so do not mess with it; see CAUTION comment up at top.
	ip6tables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_ME $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
	ip6tables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT -j ACCEPT
	#
	# allow IP6IP6 traffic because of the implicit SA created by the kernel if
	# IPComp is used (for small inbound packets that are not compressed)
	if [ -n "$PLUTO_IPCOMP" ]
	then
	ip6tables -I INPUT 1 -i $PLUTO_INTERFACE -p 41 \
	-s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# log IPsec host connection setup
	if [ $VPN_LOGGING ]
	then
	if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/128" ]
	then
	logger -t $TAG -p $FAC_PRIO \
	"+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
	else
	logger -t $TAG -p $FAC_PRIO \
	"+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
	fi
	fi
	;;
	down-host-v6:iptables)
	# connection to me, with (left/right)firewall=yes, going down
	# This is used only by the default updown script, not by your custom
	# ones, so do not mess with it; see CAUTION comment up at top.
	ip6tables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_ME $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
	ip6tables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT -j ACCEPT
	#
	# IP6IP6 exception teardown
	if [ -n "$PLUTO_IPCOMP" ]
	then
	ip6tables -D INPUT -i $PLUTO_INTERFACE -p 41 \
	-s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# log IPsec host connection teardown
	if [ $VPN_LOGGING ]
	then
	if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/128" ]
	then
	logger -t $TAG -p $FAC_PRIO -- \
	"- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
	else
	logger -t $TAG -p $FAC_PRIO -- \
	"- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
	fi
	fi
	;;
	up-client-v6:iptables)
	# connection to client subnet, with (left/right)firewall=yes, coming up
	# This is used only by the default updown script, not by your custom
	# ones, so do not mess with it; see CAUTION comment up at top.
	if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/128" ]
	then
	ip6tables -I FORWARD 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_MY_CLIENT $S_MY_PORT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
	ip6tables -I FORWARD 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_MY_CLIENT $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# a virtual IP requires an INPUT and OUTPUT rule on the host
	# or sometimes host access via the internal IP is needed
	if [ -n "$PLUTO_MY_SOURCEIP" -o -n "$PLUTO_HOST_ACCESS" ]
	then
	ip6tables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_MY_CLIENT $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
	ip6tables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_MY_CLIENT $S_MY_PORT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
	fi
	#
	# allow IP6IP6 traffic because of the implicit SA created by the kernel if
	# IPComp is used (for small inbound packets that are not compressed).
	# INPUT is correct here even for forwarded traffic.
	if [ -n "$PLUTO_IPCOMP" ]
	then
	ip6tables -I INPUT 1 -i $PLUTO_INTERFACE -p 41 \
	-s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# log IPsec client connection setup
	if [ $VPN_LOGGING ]
	then
	if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/128" ]
	then
	logger -t $TAG -p $FAC_PRIO \
	"+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
	else
	logger -t $TAG -p $FAC_PRIO \
	"+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
	fi
	fi
	;;
	down-client-v6:iptables)
	# connection to client subnet, with (left/right)firewall=yes, going down
	# This is used only by the default updown script, not by your custom
	# ones, so do not mess with it; see CAUTION comment up at top.
	if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/128" ]
	then
	ip6tables -D FORWARD -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_MY_CLIENT $S_MY_PORT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT \
	$IPSEC_POLICY_OUT -j ACCEPT
	ip6tables -D FORWARD -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_MY_CLIENT $D_MY_PORT \
	$IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# a virtual IP requires an INPUT and OUTPUT rule on the host
	# or sometimes host access via the internal IP is needed
	if [ -n "$PLUTO_MY_SOURCEIP" -o -n "$PLUTO_HOST_ACCESS" ]
	then
	ip6tables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
	-s $PLUTO_PEER_CLIENT $S_PEER_PORT \
	-d $PLUTO_MY_CLIENT $D_MY_PORT \
	$IPSEC_POLICY_IN -j ACCEPT
	ip6tables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
	-s $PLUTO_MY_CLIENT $S_MY_PORT \
	-d $PLUTO_PEER_CLIENT $D_PEER_PORT \
	$IPSEC_POLICY_OUT -j ACCEPT
	fi
	#
	# IP6IP6 exception teardown
	if [ -n "$PLUTO_IPCOMP" ]
	then
	ip6tables -D INPUT -i $PLUTO_INTERFACE -p 41 \
	-s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
	fi
	#
	# log IPsec client connection teardown
	if [ $VPN_LOGGING ]
	then
	if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/128" ]
	then
	logger -t $TAG -p $FAC_PRIO -- \
	"- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
	else
	logger -t $TAG -p $FAC_PRIO -- \
	"- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
	fi
	fi
	;;
	*) echo "$0: unknown verb \`$PLUTO_VERB' or parameter \`$1'" >&2
	exit 1
	;;
	esac