2 # iproute2 version, default updown script
4 # Copyright (C) 2003-2004 Nigel Meteringham
5 # Copyright (C) 2003-2004 Tuomo Soini
6 # Copyright (C) 2002-2004 Michael Richardson
7 # Copyright (C) 2005 Andreas Steffen <andreas.steffen@strongsec.com>
9 # This program is free software; you can redistribute it and/or modify it
10 # under the terms of the GNU General Public License as published by the
11 # Free Software Foundation; either version 2 of the License, or (at your
12 # option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
14 # This program is distributed in the hope that it will be useful, but
15 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 # CAUTION: Installing a new version of strongSwan will install a new
22 # copy of this script, wiping out any custom changes you make. If
23 # you need changes, make a copy of this under another name, and customize
24 # that, and use the (left/right)updown parameters in ipsec.conf to make
25 # FreeS/WAN use yours instead of this default one.
27 # things that this script gets (from ipsec_pluto(8) man page)
31 # indicates what version of this interface is being
32 # used. This document describes version 1.1. This
33 # is upwardly compatible with version 1.0.
36 # specifies the name of the operation to be performed
37 # (prepare-host, prepare-client, up-host, up-client,
38 # down-host, or down-client). If the address family
39 # for security gateway to security gateway communica-
40 # tions is IPv6, then a suffix of -v6 is added to the
44 # is the name of the connection for which we are
48 # is the next hop to which packets bound for the peer
52 # is the name of the ipsec interface to be used.
55 # is the IP address of our host.
58 # is the ID of our host.
61 # is the IP address / count of our client subnet. If
62 # the client is just the host, this will be the
63 # host's own IP address / max (where max is 32 for
64 # IPv4 and 128 for IPv6).
67 # is the IP address of our client net. If the client
68 # is just the host, this will be the host's own IP
71 # PLUTO_MY_CLIENT_MASK
72 # is the mask for our client net. If the client is
73 # just the host, this will be 255.255.255.255.
76 # if non-empty, then the source address for the route will be
77 # set to this IP address.
80 # is the IP protocol that will be transported.
83 # is the UDP/TCP port to which the IPsec SA is
84 # restricted on our side.
87 # is the IP address of our peer.
90 # is the ID of our peer.
93 # is the CA which issued the cert of our peer.
96 # is the IP address / count of the peer's client sub-
97 # net. If the client is just the peer, this will be
98 # the peer's own IP address / max (where max is 32
99 # for IPv4 and 128 for IPv6).
101 # PLUTO_PEER_CLIENT_NET
102 # is the IP address of the peer's client net. If the
103 # client is just the peer, this will be the peer's
106 # PLUTO_PEER_CLIENT_MASK
107 # is the mask for the peer's client net. If the
108 # client is just the peer, this will be
111 # PLUTO_PEER_PROTOCOL
112 # is the IP protocol that will be transported.
115 # is the UDP/TCP port to which the IPsec SA is
116 # restricted on the peer side.
119 # is an optional user ID employed by the XAUTH protocol
121 # logging of VPN connections
123 # tag put in front of each log entry:
126 # syslog facility and priority used:
127 FAC_PRIO=local0.notice
129 # to create a special vpn logging file, put the following line into
130 # the syslog configuration file /etc/syslog.conf:
132 # local0.notice -/var/log/vpn
135 # check interface version
136 case "$PLUTO_VERSION" in
137 1.[0]) # Older Pluto?!? Play it safe, script may be using new features.
138 echo "$0: obsolete interface version \`$PLUTO_VERSION'," >&2
139 echo "$0: called by obsolete Pluto?" >&2
143 *) echo "$0: unknown interface version \`$PLUTO_VERSION'" >&2
152 ipfwadm:ipfwadm) # due to (left/right)firewall; for default script only
154 custom:*) # custom parameters (see above CAUTION comment)
156 *) echo "$0: unknown parameters \`$*'" >&2
161 # utility functions for route manipulation
162 # Meddling with this stuff should not be necessary and requires great care.
174 if ! ip -o route get ${PLUTO_MY_SOURCEIP%/*} | grep -q ^local
176 it="ip addr add ${PLUTO_MY_SOURCEIP%/*}/32 dev $PLUTO_INTERFACE"
177 oops="`eval $it 2>&1`"
179 if test " $oops" = " " -a " $st" != " 0"
181 oops="silent error, exit status $st"
183 if test " $oops" != " " -o " $st" != " 0"
185 echo "$0: addsource \`$it' failed ($oops)" >&2
193 parms="$PLUTO_PEER_CLIENT"
196 if [ -n "$PLUTO_NEXT_HOP" ]
198 parms2="via $PLUTO_NEXT_HOP"
200 parms2="$parms2 dev $PLUTO_INTERFACE"
202 if [ -z "$PLUTO_MY_SOURCEIP" ]
204 for dir in /etc/sysconfig /etc/conf.d; do
205 if [ -f "$dir/defaultsource" ]
207 . "$dir/defaultsource"
211 if [ -n "$DEFAULTSOURCE" ]
213 PLUTO_MY_SOURCEIP=$DEFAULTSOURCE
218 if test "$1" = "add" -a -n "$PLUTO_MY_SOURCEIP"
221 parms3="$parms3 src ${PLUTO_MY_SOURCEIP%/*}"
224 case "$PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK" in
226 # opportunistic encryption work around
227 # need to provide route that eclipses default, without
229 it="ip route $1 0.0.0.0/1 $parms2 $parms3 &&
230 ip route $1 128.0.0.0/1 $parms2 $parms3"
232 *) it="ip route $1 $parms $parms2 $parms3"
235 oops="`eval $it 2>&1`"
237 if test " $oops" = " " -a " $st" != " 0"
239 oops="silent error, exit status $st"
241 if test " $oops" != " " -o " $st" != " 0"
243 echo "$0: doroute \`$it' failed ($oops)" >&2
251 # add the following static rule to the INPUT chain in the mangle table
252 # iptables -t mangle -A INPUT -p 50 -j MARK --set-mark 50
254 # NAT traversal via UDP encapsulation is supported with the rule
255 # iptables -t mangle -A INPUT -p udp --dport 4500 -j MARK --set-mark 50
257 # in the presence of KLIPS and ipsecN interfaces do not use ESP mark rules
258 if [ `echo "$PLUTO_INTERFACE" | grep "ipsec"` ]
262 CHECK_MARK="-m mark --mark $ESP_MARK"
265 # are there port numbers?
266 if [ "$PLUTO_MY_PORT" != 0 ]
268 S_MY_PORT="--sport $PLUTO_MY_PORT"
269 D_MY_PORT="--dport $PLUTO_MY_PORT"
271 if [ "$PLUTO_PEER_PORT" != 0 ]
273 S_PEER_PORT="--sport $PLUTO_PEER_PORT"
274 D_PEER_PORT="--dport $PLUTO_PEER_PORT"
277 # resolve octal escape sequences
278 PLUTO_MY_ID=`printf "$PLUTO_MY_ID"`
279 PLUTO_PEER_ID=`printf "$PLUTO_PEER_ID"`
282 case "$PLUTO_VERB:$1" in
283 prepare-host:*|prepare-client:*)
284 # delete possibly-existing route (preliminary to adding a route)
285 case "$PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK" in
287 # need to provide route that eclipses default, without
291 it="ip route delete $parms1 2>&1 ; ip route delete $parms2 2>&1"
292 oops="`ip route delete $parms1 2>&1 ; ip route delete $parms2 2>&1`"
295 parms="$PLUTO_PEER_CLIENT"
296 it="ip route delete $parms 2>&1"
297 oops="`ip route delete $parms 2>&1`"
301 if test " $oops" = " " -a " $status" != " 0"
303 oops="silent error, exit status $status"
306 *'RTNETLINK answers: No such process'*)
307 # This is what route (currently -- not documented!) gives
308 # for "could not find such a route".
313 if test " $oops" != " " -o " $status" != " 0"
315 echo "$0: \`$it' failed ($oops)" >&2
319 route-host:*|route-client:*)
320 # connection to me or my client subnet being routed
323 unroute-host:*|unroute-client:*)
324 # connection to me or my client subnet being unrouted
328 # connection to me coming up
329 # If you are doing a custom version, firewall commands go here.
330 iptables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
331 -s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
332 -d $PLUTO_ME $D_MY_PORT $CHECK_MARK -j ACCEPT
333 iptables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
334 -s $PLUTO_ME $S_MY_PORT \
335 -d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT
337 if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
339 logger -t $TAG -p $FAC_PRIO \
340 "+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
342 logger -t $TAG -p $FAC_PRIO \
343 "+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
347 # connection to me going down
348 # If you are doing a custom version, firewall commands go here.
349 # connection to me going down
350 # If you are doing a custom version, firewall commands go here.
351 iptables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
352 -s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
353 -d $PLUTO_ME $D_MY_PORT $CHECK_MARK -j ACCEPT
354 iptables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
355 -s $PLUTO_ME $S_MY_PORT \
356 -d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT
358 if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
360 logger -t $TAG -p $FAC_PRIO -- \
361 "- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
363 logger -t $TAG -p $FAC_PRIO -- \
364 "- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
368 # connection to my client subnet coming up
369 # If you are doing a custom version, firewall commands go here.
370 iptables -I FORWARD 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
371 -s $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $S_MY_PORT \
372 -d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT
373 iptables -I FORWARD 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
374 -s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
375 -d $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $D_MY_PORT \
376 $CHECK_MARK -j ACCEPT
378 if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
380 logger -t $TAG -p $FAC_PRIO \
381 "+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
383 logger -t $TAG -p $FAC_PRIO \
384 "+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
388 # connection to my client subnet going down
389 # If you are doing a custom version, firewall commands go here.
390 iptables -D FORWARD -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
391 -s $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $S_MY_PORT \
392 -d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT
393 iptables -D FORWARD -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
394 -s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
395 -d $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $D_MY_PORT \
396 $CHECK_MARK -j ACCEPT
398 if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
400 logger -t $TAG -p $FAC_PRIO -- \
401 "- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
403 logger -t $TAG -p $FAC_PRIO -- \
404 "- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
408 # connection to client subnet, with (left/right)firewall=yes, coming up
409 # This is used only by the default updown script, not by your custom
410 # ones, so do not mess with it; see CAUTION comment up at top.
411 ipfwadm -F -i accept -b -S $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK \
412 -D $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK
415 # connection to client subnet, with (left/right)firewall=yes, going down
416 # This is used only by the default updown script, not by your custom
417 # ones, so do not mess with it; see CAUTION comment up at top.
418 ipfwadm -F -d accept -b -S $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK \
419 -D $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK
424 prepare-host-v6:*|prepare-client-v6:*)
426 route-host-v6:*|route-client-v6:*)
427 # connection to me or my client subnet being routed
430 unroute-host-v6:*|unroute-client-v6:*)
431 # connection to me or my client subnet being unrouted
435 # connection to me coming up
436 # If you are doing a custom version, firewall commands go here.
439 # connection to me going down
440 # If you are doing a custom version, firewall commands go here.
443 # connection to my client subnet coming up
444 # If you are doing a custom version, firewall commands go here.
447 # connection to my client subnet going down
448 # If you are doing a custom version, firewall commands go here.
450 *) echo "$0: unknown verb \`$PLUTO_VERB' or parameter \`$1'" >&2