2006-04-28 07:14:48 +00:00
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#! /bin/sh
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# iproute2 version, default updown script
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#
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# Copyright (C) 2003-2004 Nigel Meteringham
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# Copyright (C) 2003-2004 Tuomo Soini
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# Copyright (C) 2002-2004 Michael Richardson
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# Copyright (C) 2005 Andreas Steffen <andreas.steffen@strongsec.com>
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 2 of the License, or (at your
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# option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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# CAUTION: Installing a new version of strongSwan will install a new
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# copy of this script, wiping out any custom changes you make. If
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# you need changes, make a copy of this under another name, and customize
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# that, and use the (left/right)updown parameters in ipsec.conf to make
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# FreeS/WAN use yours instead of this default one.
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# things that this script gets (from ipsec_pluto(8) man page)
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#
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#
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# PLUTO_VERSION
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# indicates what version of this interface is being
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# used. This document describes version 1.1. This
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# is upwardly compatible with version 1.0.
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#
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# PLUTO_VERB
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# specifies the name of the operation to be performed
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# (prepare-host, prepare-client, up-host, up-client,
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# down-host, or down-client). If the address family
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2009-04-30 17:15:28 +00:00
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# for security gateway to security gateway communica-
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2006-04-28 07:14:48 +00:00
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# tions is IPv6, then a suffix of -v6 is added to the
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# verb.
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#
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# PLUTO_CONNECTION
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# is the name of the connection for which we are
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# routing.
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#
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# PLUTO_NEXT_HOP
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# is the next hop to which packets bound for the peer
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# must be sent.
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#
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# PLUTO_INTERFACE
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# is the name of the ipsec interface to be used.
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#
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# PLUTO_ME
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# is the IP address of our host.
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#
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# PLUTO_MY_ID
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# is the ID of our host.
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#
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# PLUTO_MY_CLIENT
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# is the IP address / count of our client subnet. If
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# the client is just the host, this will be the
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# host's own IP address / max (where max is 32 for
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# IPv4 and 128 for IPv6).
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#
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# PLUTO_MY_CLIENT_NET
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# is the IP address of our client net. If the client
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# is just the host, this will be the host's own IP
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# address.
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#
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# PLUTO_MY_CLIENT_MASK
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# is the mask for our client net. If the client is
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# just the host, this will be 255.255.255.255.
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#
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# PLUTO_MY_SOURCEIP
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# if non-empty, then the source address for the route will be
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# set to this IP address.
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#
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# PLUTO_MY_PROTOCOL
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# is the IP protocol that will be transported.
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#
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# PLUTO_MY_PORT
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# is the UDP/TCP port to which the IPsec SA is
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# restricted on our side.
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#
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# PLUTO_PEER
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# is the IP address of our peer.
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#
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# PLUTO_PEER_ID
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# is the ID of our peer.
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#
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# PLUTO_PEER_CA
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# is the CA which issued the cert of our peer.
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#
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# PLUTO_PEER_CLIENT
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2009-04-30 17:15:28 +00:00
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# is the IP address / count of the peer's client sub-
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2006-04-28 07:14:48 +00:00
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# net. If the client is just the peer, this will be
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# the peer's own IP address / max (where max is 32
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# for IPv4 and 128 for IPv6).
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#
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# PLUTO_PEER_CLIENT_NET
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# is the IP address of the peer's client net. If the
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# client is just the peer, this will be the peer's
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# own IP address.
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#
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# PLUTO_PEER_CLIENT_MASK
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# is the mask for the peer's client net. If the
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# client is just the peer, this will be
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# 255.255.255.255.
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#
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# PLUTO_PEER_PROTOCOL
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# is the IP protocol that will be transported.
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#
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# PLUTO_PEER_PORT
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# is the UDP/TCP port to which the IPsec SA is
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# restricted on the peer side.
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#
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# logging of VPN connections
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#
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# tag put in front of each log entry:
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TAG=vpn
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#
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# syslog facility and priority used:
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FAC_PRIO=local0.notice
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#
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# to create a special vpn logging file, put the following line into
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# the syslog configuration file /etc/syslog.conf:
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#
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# local0.notice -/var/log/vpn
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#
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# check interface version
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case "$PLUTO_VERSION" in
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1.[0]) # Older Pluto?!? Play it safe, script may be using new features.
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echo "$0: obsolete interface version \`$PLUTO_VERSION'," >&2
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echo "$0: called by obsolete Pluto?" >&2
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exit 2
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;;
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1.*) ;;
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*) echo "$0: unknown interface version \`$PLUTO_VERSION'" >&2
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exit 2
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;;
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esac
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# check parameter(s)
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case "$1:$*" in
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':') # no parameters
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;;
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ipfwadm:ipfwadm) # due to (left/right)firewall; for default script only
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;;
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custom:*) # custom parameters (see above CAUTION comment)
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;;
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*) echo "$0: unknown parameters \`$*'" >&2
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exit 2
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;;
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esac
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# utility functions for route manipulation
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# Meddling with this stuff should not be necessary and requires great care.
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uproute() {
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doroute add
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ip route flush cache
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}
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downroute() {
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doroute delete
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ip route flush cache
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}
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addsource() {
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st=0
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if ! ip -o route get ${PLUTO_MY_SOURCEIP%/*} | grep -q ^local
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then
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it="ip addr add ${PLUTO_MY_SOURCEIP%/*}/32 dev $PLUTO_INTERFACE"
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oops="`eval $it 2>&1`"
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st=$?
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if test " $oops" = " " -a " $st" != " 0"
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then
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oops="silent error, exit status $st"
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fi
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if test " $oops" != " " -o " $st" != " 0"
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then
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echo "$0: addsource \`$it' failed ($oops)" >&2
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fi
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fi
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return $st
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}
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doroute() {
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st=0
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parms="$PLUTO_PEER_CLIENT"
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parms2=
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if [ -n "$PLUTO_NEXT_HOP" ]
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then
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parms2="via $PLUTO_NEXT_HOP"
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fi
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parms2="$parms2 dev $PLUTO_INTERFACE"
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if [ -z "$PLUTO_MY_SOURCEIP" ]
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then
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2009-05-29 06:10:02 +00:00
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for dir in /etc/sysconfig /etc/conf.d; do
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if [ -f "$dir/defaultsource" ]
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then
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. "$dir/defaultsource"
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fi
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done
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2006-04-28 07:14:48 +00:00
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if [ -n "$DEFAULTSOURCE" ]
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then
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PLUTO_MY_SOURCEIP=$DEFAULTSOURCE
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fi
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fi
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parms3=
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if test "$1" = "add" -a -n "$PLUTO_MY_SOURCEIP"
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then
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addsource
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parms3="$parms3 src ${PLUTO_MY_SOURCEIP%/*}"
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fi
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case "$PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK" in
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"0.0.0.0/0.0.0.0")
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# opportunistic encryption work around
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# need to provide route that eclipses default, without
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# replacing it.
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it="ip route $1 0.0.0.0/1 $parms2 $parms3 &&
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ip route $1 128.0.0.0/1 $parms2 $parms3"
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;;
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*) it="ip route $1 $parms $parms2 $parms3"
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;;
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esac
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oops="`eval $it 2>&1`"
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st=$?
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if test " $oops" = " " -a " $st" != " 0"
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then
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oops="silent error, exit status $st"
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fi
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if test " $oops" != " " -o " $st" != " 0"
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then
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echo "$0: doroute \`$it' failed ($oops)" >&2
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fi
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return $st
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}
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# define ESP mark
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ESP_MARK=50
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# add the following static rule to the INPUT chain in the mangle table
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# iptables -t mangle -A INPUT -p 50 -j MARK --set-mark 50
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# NAT traversal via UDP encapsulation is supported with the rule
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# iptables -t mangle -A INPUT -p udp --dport 4500 -j MARK --set-mark 50
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# in the presence of KLIPS and ipsecN interfaces do not use ESP mark rules
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if [ `echo "$PLUTO_INTERFACE" | grep "ipsec"` ]
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then
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CHECK_MARK=""
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else
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CHECK_MARK="-m mark --mark $ESP_MARK"
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fi
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# are there port numbers?
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if [ "$PLUTO_MY_PORT" != 0 ]
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then
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S_MY_PORT="--sport $PLUTO_MY_PORT"
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D_MY_PORT="--dport $PLUTO_MY_PORT"
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fi
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if [ "$PLUTO_PEER_PORT" != 0 ]
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then
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S_PEER_PORT="--sport $PLUTO_PEER_PORT"
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D_PEER_PORT="--dport $PLUTO_PEER_PORT"
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fi
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2008-07-18 10:04:40 +00:00
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# resolve octal escape sequences
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PLUTO_MY_ID=`printf "$PLUTO_MY_ID"`
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PLUTO_PEER_ID=`printf "$PLUTO_PEER_ID"`
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2006-04-28 07:14:48 +00:00
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# the big choice
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case "$PLUTO_VERB:$1" in
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prepare-host:*|prepare-client:*)
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# delete possibly-existing route (preliminary to adding a route)
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case "$PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK" in
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"0.0.0.0/0.0.0.0")
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# need to provide route that eclipses default, without
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# replacing it.
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parms1="0.0.0.0/1"
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parms2="128.0.0.0/1"
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it="ip route delete $parms1 2>&1 ; ip route delete $parms2 2>&1"
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oops="`ip route delete $parms1 2>&1 ; ip route delete $parms2 2>&1`"
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;;
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*)
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parms="$PLUTO_PEER_CLIENT"
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it="ip route delete $parms 2>&1"
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oops="`ip route delete $parms 2>&1`"
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;;
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esac
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status="$?"
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if test " $oops" = " " -a " $status" != " 0"
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then
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oops="silent error, exit status $status"
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fi
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case "$oops" in
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*'RTNETLINK answers: No such process'*)
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# This is what route (currently -- not documented!) gives
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# for "could not find such a route".
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oops=
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status=0
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;;
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esac
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if test " $oops" != " " -o " $status" != " 0"
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then
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echo "$0: \`$it' failed ($oops)" >&2
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fi
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exit $status
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;;
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route-host:*|route-client:*)
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# connection to me or my client subnet being routed
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uproute
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;;
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unroute-host:*|unroute-client:*)
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# connection to me or my client subnet being unrouted
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downroute
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;;
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up-host:*)
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# connection to me coming up
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# If you are doing a custom version, firewall commands go here.
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iptables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
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-s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
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-d $PLUTO_ME $D_MY_PORT $CHECK_MARK -j ACCEPT
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iptables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
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-s $PLUTO_ME $S_MY_PORT \
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-d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT
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#
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2008-07-18 10:04:40 +00:00
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if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
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2006-04-28 07:14:48 +00:00
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then
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logger -t $TAG -p $FAC_PRIO \
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2008-07-18 10:04:40 +00:00
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"+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
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2006-04-28 07:14:48 +00:00
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else
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logger -t $TAG -p $FAC_PRIO \
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2008-07-18 10:04:40 +00:00
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"+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
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2006-04-28 07:14:48 +00:00
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fi
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;;
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down-host:*)
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# connection to me going down
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# If you are doing a custom version, firewall commands go here.
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# connection to me going down
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# If you are doing a custom version, firewall commands go here.
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iptables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
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-s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
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-d $PLUTO_ME $D_MY_PORT $CHECK_MARK -j ACCEPT
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iptables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
|
|
|
|
-s $PLUTO_ME $S_MY_PORT \
|
|
|
|
-d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT
|
|
|
|
#
|
2008-07-18 10:04:40 +00:00
|
|
|
if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
|
2006-04-28 07:14:48 +00:00
|
|
|
then
|
|
|
|
logger -t $TAG -p $FAC_PRIO -- \
|
2008-07-18 10:04:40 +00:00
|
|
|
"- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
|
2006-04-28 07:14:48 +00:00
|
|
|
else
|
|
|
|
logger -t $TAG -p $FAC_PRIO -- \
|
2008-07-18 10:04:40 +00:00
|
|
|
"- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
|
2006-04-28 07:14:48 +00:00
|
|
|
fi
|
|
|
|
;;
|
|
|
|
up-client:)
|
|
|
|
# connection to my client subnet coming up
|
|
|
|
# If you are doing a custom version, firewall commands go here.
|
|
|
|
iptables -I FORWARD 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
|
|
|
|
-s $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $S_MY_PORT \
|
|
|
|
-d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT
|
|
|
|
iptables -I FORWARD 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
|
|
|
|
-s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
|
|
|
|
-d $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $D_MY_PORT \
|
|
|
|
$CHECK_MARK -j ACCEPT
|
|
|
|
#
|
2008-07-18 10:04:40 +00:00
|
|
|
if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
|
2006-04-28 07:14:48 +00:00
|
|
|
then
|
|
|
|
logger -t $TAG -p $FAC_PRIO \
|
2008-07-18 10:04:40 +00:00
|
|
|
"+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
|
2006-04-28 07:14:48 +00:00
|
|
|
else
|
|
|
|
logger -t $TAG -p $FAC_PRIO \
|
2008-07-18 10:04:40 +00:00
|
|
|
"+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
|
2006-04-28 07:14:48 +00:00
|
|
|
fi
|
|
|
|
;;
|
|
|
|
down-client:)
|
|
|
|
# connection to my client subnet going down
|
|
|
|
# If you are doing a custom version, firewall commands go here.
|
|
|
|
iptables -D FORWARD -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
|
|
|
|
-s $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $S_MY_PORT \
|
|
|
|
-d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT
|
|
|
|
iptables -D FORWARD -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
|
|
|
|
-s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
|
|
|
|
-d $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $D_MY_PORT \
|
|
|
|
$CHECK_MARK -j ACCEPT
|
|
|
|
#
|
2008-07-18 10:04:40 +00:00
|
|
|
if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
|
2006-04-28 07:14:48 +00:00
|
|
|
then
|
|
|
|
logger -t $TAG -p $FAC_PRIO -- \
|
2008-07-18 10:04:40 +00:00
|
|
|
"- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
|
2006-04-28 07:14:48 +00:00
|
|
|
else
|
|
|
|
logger -t $TAG -p $FAC_PRIO -- \
|
2008-07-18 10:04:40 +00:00
|
|
|
"- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
|
2006-04-28 07:14:48 +00:00
|
|
|
fi
|
|
|
|
;;
|
|
|
|
up-client:ipfwadm)
|
|
|
|
# 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.
|
|
|
|
ipfwadm -F -i accept -b -S $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK \
|
|
|
|
-D $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK
|
|
|
|
;;
|
|
|
|
down-client:ipfwadm)
|
|
|
|
# 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.
|
|
|
|
ipfwadm -F -d accept -b -S $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK \
|
|
|
|
-D $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK
|
|
|
|
;;
|
|
|
|
#
|
|
|
|
# IPv6
|
|
|
|
#
|
|
|
|
prepare-host-v6:*|prepare-client-v6:*)
|
|
|
|
;;
|
|
|
|
route-host-v6:*|route-client-v6:*)
|
|
|
|
# connection to me or my client subnet being routed
|
|
|
|
#uproute_v6
|
|
|
|
;;
|
|
|
|
unroute-host-v6:*|unroute-client-v6:*)
|
|
|
|
# connection to me or my client subnet being unrouted
|
|
|
|
#downroute_v6
|
|
|
|
;;
|
|
|
|
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.
|
|
|
|
;;
|
|
|
|
*) echo "$0: unknown verb \`$PLUTO_VERB' or parameter \`$1'" >&2
|
|
|
|
exit 1
|
|
|
|
;;
|
|
|
|
esac
|