mirror of
https://gitlab.com/shorewall/code.git
synced 2024-12-05 22:10:47 +01:00
297 lines
6.9 KiB
Plaintext
297 lines
6.9 KiB
Plaintext
|
#!/bin/sh
|
||
|
|
||
|
################################################################################
|
||
|
#
|
||
|
# ipsecvpn -- script for use on a roadwarrior to start/stop a tunnel-mode
|
||
|
# IPSEC connection
|
||
|
#
|
||
|
# This program is under GPL [http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt]
|
||
|
#
|
||
|
# (c) 2004,2005 - Tom Eastep (teastep@shorewall.net)
|
||
|
#
|
||
|
# This program is free software; you can redistribute it and/or modify
|
||
|
# it under the terms of Version 2 of the GNU General Public License
|
||
|
# as published by the Free Software Foundation.
|
||
|
#
|
||
|
# 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.
|
||
|
#
|
||
|
# You should have received a copy of the GNU General Public License
|
||
|
# along with this program; if not, write to the Free Software
|
||
|
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||
|
|
||
|
RCDLINKS="2,S42 3,S42 6,K42"
|
||
|
|
||
|
#### BEGIN INIT INFO
|
||
|
# Provides: ipsecvpn
|
||
|
# Required-Start: $shorewall
|
||
|
# Required-Stop:
|
||
|
# Default-Start: 2 3 5
|
||
|
# Default-Stop: 0 1 6
|
||
|
# Description: starts and stops a tunnel-mode VPN connection
|
||
|
### END INIT INFO
|
||
|
|
||
|
# chkconfig: 2345 26 89
|
||
|
# description: IPSEC tunnel-mode connection
|
||
|
#
|
||
|
################################################################################
|
||
|
#
|
||
|
# External Interface
|
||
|
#
|
||
|
INTERFACE=eth0
|
||
|
#
|
||
|
# Remote IPSEC Gateway
|
||
|
#
|
||
|
GATEWAY=1.2.3.4
|
||
|
#
|
||
|
# Networks behind the remote gateway (space-separated list)
|
||
|
#
|
||
|
NETWORKS="192.168.1.0/24"
|
||
|
#
|
||
|
# Directory where X.509 certificates are stored.
|
||
|
#
|
||
|
CERTS=/etc/certs
|
||
|
#
|
||
|
# Certificate to be used for this connection. The cert
|
||
|
# directory must contain:
|
||
|
#
|
||
|
# ${CERT}.pem - the certificate
|
||
|
# ${CERT}_key.pem - the certificates's key
|
||
|
#
|
||
|
CERT=roadwarrior
|
||
|
#
|
||
|
# The setkey binary
|
||
|
#
|
||
|
SETKEY=/usr/sbin/setkey
|
||
|
#
|
||
|
# The racoon binary
|
||
|
#
|
||
|
RACOON=/usr/sbin/racoon
|
||
|
|
||
|
#
|
||
|
# Message to stderr
|
||
|
#
|
||
|
error_message() # $* = Error Message
|
||
|
{
|
||
|
echo " $@" >&2
|
||
|
}
|
||
|
|
||
|
#
|
||
|
# Fatal error -- stops the firewall after issuing the error message
|
||
|
#
|
||
|
fatal_error() # $* = Error Message
|
||
|
{
|
||
|
echo " Error: $@" >&2
|
||
|
exit 2
|
||
|
}
|
||
|
|
||
|
#
|
||
|
# Find interface address--returns the first IP address assigned to the passed
|
||
|
# device
|
||
|
#
|
||
|
find_first_interface_address() # $1 = interface
|
||
|
{
|
||
|
#
|
||
|
# get the line of output containing the first IP address
|
||
|
#
|
||
|
addr=$(ip -f inet addr show $1 2> /dev/null | grep inet | head -n1)
|
||
|
#
|
||
|
# If there wasn't one, bail out now
|
||
|
#
|
||
|
[ -n "$addr" ] || fatal_error "Can't determine the IP address of $1"
|
||
|
#
|
||
|
# Strip off the trailing VLSM mask (or the peer IP in case of a P-t-P link)
|
||
|
# along with everything else on the line
|
||
|
#
|
||
|
echo $addr | sed 's/inet //;s/\/.*//;s/ peer.*//'
|
||
|
}
|
||
|
|
||
|
#
|
||
|
# Create a Racoon configuration file using the variables above
|
||
|
#
|
||
|
make_racoon_conf() {
|
||
|
echo "path certificate \"$CERTS\";"
|
||
|
echo
|
||
|
echo "listen"
|
||
|
echo "{"
|
||
|
echo " isakmp $IPADDR;"
|
||
|
echo "}"
|
||
|
echo
|
||
|
echo "remote $GATEWAY"
|
||
|
echo "{"
|
||
|
echo " exchange_mode main;"
|
||
|
echo " certificate_type x509 \"$CERT.pem\" \"${CERT}_key.pem\";"
|
||
|
echo " verify_cert on;"
|
||
|
echo " my_identifier asn1dn ;"
|
||
|
echo " peers_identifier asn1dn ;"
|
||
|
echo " verify_identifier on ;"
|
||
|
echo " lifetime time 24 hour ;"
|
||
|
echo " proposal {"
|
||
|
echo " encryption_algorithm blowfish;"
|
||
|
echo " hash_algorithm sha1;"
|
||
|
echo " authentication_method rsasig ;"
|
||
|
echo " dh_group 2 ;"
|
||
|
echo " }"
|
||
|
echo "}"
|
||
|
echo
|
||
|
|
||
|
for network in $NETWORKS; do
|
||
|
echo "sainfo address $IPADDR/32 any address $network any"
|
||
|
echo "{"
|
||
|
echo " pfs_group 2;"
|
||
|
echo " lifetime time 12 hour ;"
|
||
|
echo " encryption_algorithm blowfish ;"
|
||
|
echo " authentication_algorithm hmac_sha1, hmac_md5 ;"
|
||
|
echo " compression_algorithm deflate ;"
|
||
|
echo "}"
|
||
|
echo
|
||
|
echo "sainfo address $network any address $IPADDR/32 any"
|
||
|
echo "{"
|
||
|
echo " pfs_group 2;"
|
||
|
echo " lifetime time 12 hour ;"
|
||
|
echo " encryption_algorithm blowfish ;"
|
||
|
echo " authentication_algorithm hmac_sha1, hmac_md5 ;"
|
||
|
echo " compression_algorithm deflate ;"
|
||
|
echo "}"
|
||
|
|
||
|
done
|
||
|
|
||
|
echo "sainfo address $IPADDR/32 any address $GATEWAY/32 any"
|
||
|
echo "{"
|
||
|
echo " pfs_group 2;"
|
||
|
echo " lifetime time 12 hour ;"
|
||
|
echo " encryption_algorithm blowfish ;"
|
||
|
echo " authentication_algorithm hmac_sha1, hmac_md5 ;"
|
||
|
echo " compression_algorithm deflate ;"
|
||
|
echo "}"
|
||
|
echo
|
||
|
echo "sainfo address $GATEWAY/32 any address $IPADDR/32 any"
|
||
|
echo "{"
|
||
|
echo " pfs_group 2;"
|
||
|
echo " lifetime time 12 hour ;"
|
||
|
echo " encryption_algorithm blowfish ;"
|
||
|
echo " authentication_algorithm hmac_sha1, hmac_md5 ;"
|
||
|
echo " compression_algorithm deflate ;"
|
||
|
echo "}"
|
||
|
}
|
||
|
|
||
|
#
|
||
|
# Make a setkey configuration file using the variables above
|
||
|
#
|
||
|
make_setkey_conf()
|
||
|
{
|
||
|
echo "flush;"
|
||
|
echo "spdflush;"
|
||
|
|
||
|
echo "spdadd $IPADDR/32 $GATEWAY/32 any -P out ipsec esp/tunnel/${IPADDR}-${GATEWAY}/require;"
|
||
|
echo "spdadd $GATEWAY/32 $IPADDR/32 any -P in ipsec esp/tunnel/${GATEWAY}-${IPADDR}/require;"
|
||
|
|
||
|
for network in $NETWORKS; do
|
||
|
echo "spdadd $IPADDR/32 $network any -P out ipsec esp/tunnel/${IPADDR}-${GATEWAY}/require;"
|
||
|
echo "spdadd $network $IPADDR/32 any -P in ipsec esp/tunnel/${GATEWAY}-${IPADDR}/require;"
|
||
|
done
|
||
|
}
|
||
|
|
||
|
#
|
||
|
# Start the Tunnel
|
||
|
#
|
||
|
start()
|
||
|
{
|
||
|
#
|
||
|
# Get the first IP address configured on the device in INTERFACE
|
||
|
#
|
||
|
IPADDR=$(find_first_interface_address $INTERFACE)
|
||
|
#
|
||
|
# Create the name of the setkey temporary file
|
||
|
#
|
||
|
TEMPFILE=$(mktemp /tmp/$(basename $0).XXXXXXXX)
|
||
|
[ $? -eq 0 ] || fatal_error "Can't create temporary file name"
|
||
|
#
|
||
|
# Create the file
|
||
|
#
|
||
|
make_setkey_conf > $TEMPFILE
|
||
|
#
|
||
|
# Create the SPD
|
||
|
#
|
||
|
$SETKEY -f $TEMPFILE
|
||
|
#
|
||
|
# We can now remove the file
|
||
|
#
|
||
|
rm -f $TEMPFILE
|
||
|
#
|
||
|
# Create another name -- make this distict to aid debugging
|
||
|
# (just comment out the 'rm' commands)
|
||
|
#
|
||
|
TEMPFILE=$(mktemp /tmp/$(basename $0).XXXXXXXX)
|
||
|
[ $? -eq 0 ] || fatal_error "Can't create temporary file name"
|
||
|
#
|
||
|
# Create the file
|
||
|
#
|
||
|
make_racoon_conf > $TEMPFILE
|
||
|
#
|
||
|
# Start Racoon Daemon
|
||
|
#
|
||
|
$RACOON -4 -f $TEMPFILE
|
||
|
#
|
||
|
# Once the Daemon is running, we can remove the file
|
||
|
#
|
||
|
rm -f $TEMPFILE
|
||
|
}
|
||
|
#
|
||
|
# Stop the Tunnel
|
||
|
#
|
||
|
stop()
|
||
|
{
|
||
|
#
|
||
|
# Kill any racoon daemons
|
||
|
#
|
||
|
killall racoon
|
||
|
#
|
||
|
# Purge the SAD and SPD
|
||
|
#
|
||
|
setkey -F -FP
|
||
|
}
|
||
|
|
||
|
#
|
||
|
# Display command syntax and abend
|
||
|
#
|
||
|
usage()
|
||
|
{
|
||
|
error_message "usage: $(basename $0) [start|stop|restart]"
|
||
|
exit 1
|
||
|
}
|
||
|
################################################################################
|
||
|
# C O D E S T A R T S H E R E
|
||
|
################################################################################
|
||
|
[ $# -eq 1 ] || usage
|
||
|
|
||
|
|
||
|
case $1 in
|
||
|
start)
|
||
|
start
|
||
|
;;
|
||
|
stop)
|
||
|
stop
|
||
|
;;
|
||
|
restart)
|
||
|
stop
|
||
|
sleep 2
|
||
|
start
|
||
|
;;
|
||
|
*)
|
||
|
usage
|
||
|
;;
|
||
|
esac
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|