Ubuntu-Forum & Kubuntu-Forum | www.Ubuntu-Forum.de

Quellcode

● openvpn.service - OpenVPN service
Loaded: loaded (/lib/systemd/system/openvpn.service; enabled; vendor preset: 
Active: active (exited) since Di 2018-02-27 18:42:06 CET; 38min ago
Main PID: 17524 (code=exited, status=0/SUCCESS)
Tasks: 0 (limit: 4915)
CGroup: /system.slice/openvpn.service

Feb 27 18:42:06 srv systemd[1]: Starting OpenVPN service...
Feb 27 18:42:06 srv systemd[1]: Started OpenVPN service.

Quellcode

enp0s25: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.152.200 netmask 255.255.255.0 broadcast 192.168.152.255
inet6 fe80::d8d3:6449:4bec:309e prefixlen 64 scopeid 0x20<link>
ether 00:1d:09:99:e9:39 txqueuelen 1000 (Ethernet)
RX packets 487989 bytes 190815187 (190.8 MB)
RX errors 0 dropped 190 overruns 0 frame 0
TX packets 408846 bytes 39481703 (39.4 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xfdfc0000-fdfe0000 

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Lokale Schleife)
RX packets 422161 bytes 345537064 (345.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 422161 bytes 345537064 (345.5 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

Quellcode

#################################################
# Sample OpenVPN 2.0 config file for        	#
# multi-client server.                      	#
#                                           	#
# This file is for the server side          	#
# of a many-clients <-> one-server          	#
# OpenVPN configuration.                    	#
#                                           	#
# OpenVPN also supports                     	#
# single-machine <-> single-machine         	#
# configurations (See the Examples page     	#
# on the web site for more info).           	#
#                                           	#
# This config should work on Windows        	#
# or Linux/BSD systems.  Remember on        	#
# Windows to quote pathnames and use        	#
# double backslashes, e.g.:                 	#
# "C:\\Program Files\\OpenVPN\\config\\foo.key" #
#                                           	#
# Comments are preceded with '#' or ';'     	#
#################################################

# Which local IP address should OpenVPN
# listen on? (optional)
;local a.b.c.d

# Which TCP/UDP port should OpenVPN listen on?
# If you want to run multiple OpenVPN instances
# on the same machine, use a different port
# number for each one.  You will need to
# open up this port on your firewall.
port 54540

# TCP or UDP server?
;proto tcp
proto udp

# "dev tun" will create a routed IP tunnel,
# "dev tap" will create an ethernet tunnel.
# Use "dev tap0" if you are ethernet bridging
# and have precreated a tap0 virtual interface
# and bridged it with your ethernet interface.
# If you want to control access policies
# over the VPN, you must create firewall
# rules for the the TUN/TAP interface.
# On non-Windows systems, you can give
# an explicit unit number, such as tun0.
# On Windows, use "dev-node" for this.
# On most systems, the VPN will not function
# unless you partially or fully disable
# the firewall for the TUN/TAP interface.
;dev tap
dev tun

# Windows needs the TAP-Win32 adapter name
# from the Network Connections panel if you
# have more than one.  On XP SP2 or higher,
# you may need to selectively disable the
# Windows firewall for the TAP adapter.
# Non-Windows systems usually don't need this.
;dev-node MyTap

# SSL/TLS root certificate (ca), certificate
# (cert), and private key (key).  Each client
# and the server must have their own cert and
# key file.  The server and all clients will
# use the same ca file.
#
# See the "easy-rsa" directory for a series
# of scripts for generating RSA certificates
# and private keys.  Remember to use
# a unique Common Name for the server
# and each of the client certificates.
#
# Any X509 key management system can be used.
# OpenVPN can also use a PKCS #12 formatted key file
# (see "pkcs12" directive in man page).
ca /etc/openvpn/easy-rsa2/keys/ca.crt
cert /etc/openvpn/easy-rsa2/keys/meine.dyndns.org.crt
key /etc/openvpn/easy-rsa2/keys/meine.dyndns.org.key  # This file should be kept secret


# Diffie hellman parameters.
# Generate your own with:
#   openssl dhparam -out dh1024.pem 1024
# Substitute 2048 for 1024 if you are using
# 2048 bit keys. 
dh /etc/openvpn/easy-rsa2/keys/dh2048.pem

# Configure server mode and supply a VPN subnet
# for OpenVPN to draw client addresses from.
# The server will take 10.8.0.1 for itself,
# the rest will be made available to clients.
# Each client will be able to reach the server
# on 10.8.0.1. Comment this line out if you are
# ethernet bridging. See the man page for more info.
server 10.152.152.1 255.255.255.0

# Maintain a record of client <-> virtual IP address
# associations in this file.  If OpenVPN goes down or
# is restarted, reconnecting clients can be assigned
# the same virtual IP address from the pool that was
# previously assigned.
ifconfig-pool-persist ipp.txt

# Configure server mode for ethernet bridging.
# You must first use your OS's bridging capability
# to bridge the TAP interface with the ethernet
# NIC interface.  Then you must manually set the
# IP/netmask on the bridge interface, here we
# assume 10.8.0.4/255.255.255.0.  Finally we
# must set aside an IP range in this subnet
# (start=10.8.0.50 end=10.8.0.100) to allocate
# to connecting clients.  Leave this line commented
# out unless you are ethernet bridging.
;server-bridge 10.8.0.4 255.255.255.0 10.8.0.50 10.8.0.100

# Configure server mode for ethernet bridging
# using a DHCP-proxy, where clients talk
# to the OpenVPN server-side DHCP server
# to receive their IP address allocation
# and DNS server addresses.  You must first use
# your OS's bridging capability to bridge the TAP
# interface with the ethernet NIC interface.
# Note: this mode only works on clients (such as
# Windows), where the client-side TAP adapter is
# bound to a DHCP client.
;server-bridge

# Push routes to the client to allow it
# to reach other private subnets behind
# the server.  Remember that these
# private subnets will also need
# to know to route the OpenVPN client
# address pool (10.8.0.0/255.255.255.0)
# back to the OpenVPN server.
push "route 192.168.152.0 255.255.255.0"
;push "route 192.168.20.0 255.255.255.0"

# To assign specific IP addresses to specific
# clients or if a connecting client has a private
# subnet behind it that should also have VPN access,
# use the subdirectory "ccd" for client-specific
# configuration files (see man page for more info).

# EXAMPLE: Suppose the client
# having the certificate common name "Thelonious"
# also has a small subnet behind his connecting
# machine, such as 192.168.40.128/255.255.255.248.
# First, uncomment out these lines:
;client-config-dir ccd
;route 192.168.40.128 255.255.255.248
# Then create a file ccd/Thelonious with this line:
#   iroute 192.168.40.128 255.255.255.248
# This will allow Thelonious' private subnet to
# access the VPN.  This example will only work
# if you are routing, not bridging, i.e. you are
# using "dev tun" and "server" directives.

# EXAMPLE: Suppose you want to give
# Thelonious a fixed VPN IP address of 10.9.0.1.
# First uncomment out these lines:
client-config-dir ccd
route 10.152.152.0 255.255.255.0
;route 10.9.0.0 255.255.255.252
# Then add this line to ccd/Thelonious:
#   ifconfig-push 10.9.0.1 10.9.0.2

# Suppose that you want to enable different
# firewall access policies for different groups
# of clients.  There are two methods:
# (1) Run multiple OpenVPN daemons, one for each
# 	group, and firewall the TUN/TAP interface
# 	for each group/daemon appropriately.
# (2) (Advanced) Create a script to dynamically
# 	modify the firewall in response to access
# 	from different clients.  See man
# 	page for more info on learn-address script.
;learn-address ./script

# If enabled, this directive will configure
# all clients to redirect their default
# network gateway through the VPN, causing
# all IP traffic such as web browsing and
# and DNS lookups to go through the VPN
# (The OpenVPN server machine may need to NAT
# or bridge the TUN/TAP interface to the internet
# in order for this to work properly).
;push "redirect-gateway def1 bypass-dhcp"

# Certain Windows-specific network settings
# can be pushed to clients, such as DNS
# or WINS server addresses.  CAVEAT:
# http://openvpn.net/faq.html#dhcpcaveats
# The addresses below refer to the public
# DNS servers provided by opendns.com.
;push "dhcp-option DNS 208.67.222.222"
;push "dhcp-option DNS 208.67.220.220"
##
##
##
#HIER!
#push "topology subnet"
#topology subnet
##
##
##
##
##
# Uncomment this directive to allow different
# clients to be able to "see" each other.
# By default, clients will only see the server.
# To force clients to only see the server, you
# will also need to appropriately firewall the
# server's TUN/TAP interface.
;client-to-client

# Uncomment this directive if multiple clients
# might connect with the same certificate/key
# files or common names.  This is recommended
# only for testing purposes.  For production use,
# each client should have its own certificate/key
# pair.
#
# IF YOU HAVE NOT GENERATED INDIVIDUAL
# CERTIFICATE/KEY PAIRS FOR EACH CLIENT,
# EACH HAVING ITS OWN UNIQUE "COMMON NAME",
# UNCOMMENT THIS LINE OUT.
;duplicate-cn

# The keepalive directive causes ping-like
# messages to be sent back and forth over
# the link so that each side knows when
# the other side has gone down.
# Ping every 10 seconds, assume that remote
# peer is down if no ping received during
# a 120 second time period.
keepalive 10 120

# For extra security beyond that provided
# by SSL/TLS, create an "HMAC firewall"
# to help block DoS attacks and UDP port flooding.
#
# Generate with:
#   openvpn --genkey --secret ta.key
#
# The server and each client must have
# a copy of this key.
# The second parameter should be '0'
# on the server and '1' on the clients.
;tls-auth ta.key 0 # This file is secret

# Select a cryptographic cipher.
# This config item must be copied to
# the client config file as well.
;cipher BF-CBC    	# Blowfish (default)
;cipher AES-128-CBC   # AES
;cipher DES-EDE3-CBC  # Triple-DES

# Enable compression on the VPN link.
# If you enable it here, you must also
# enable it in the client config file.
comp-lzo

# The maximum number of concurrently connected
# clients we want to allow.
;max-clients 100

# It's a good idea to reduce the OpenVPN
# daemon's privileges after initialization.
#
# You can uncomment this out on
# non-Windows systems.
user nobody
group nogroup

# The persist options will try to avoid
# accessing certain resources on restart
# that may no longer be accessible because
# of the privilege downgrade.
persist-key
persist-tun

# Output a short status file showing
# current connections, truncated
# and rewritten every minute.
status openvpn-status.log

# By default, log messages will go to the syslog (or
# on Windows, if running as a service, they will go to
# the "\Program Files\OpenVPN\log" directory).
# Use log or log-append to override this default.
# "log" will truncate the log file on OpenVPN startup,
# while "log-append" will append to it.  Use one
# or the other (but not both).
log     	openvpn.log
;log-append  openvpn.log

# Set the appropriate level of log
# file verbosity.
#
# 0 is silent, except for fatal errors
# 4 is reasonable for general usage
# 5 and 6 can help to debug connection problems
# 9 is extremely verbose
verb 3

# Silence repeating messages.  At most 20
# sequential messages of the same message
# category will be output to the log.
;mute 20
# Hier Revoke
#crl-verify /etc/openvpn/crl.pem

Quellcode

Feb 28 06:12:21 srv systemd[1044]: Time has been changed
Feb 28 06:12:21 srv systemd[1]: Time has been changed
Feb 28 06:12:21 srv systemd[1]: apt-daily.timer: Adding 1h 52min 50.645931s random time.
Feb 28 06:12:21 srv systemd[1]: snapd.refresh.timer: Adding 4h 12min 49.164908s random time.
Feb 28 06:12:36 srv systemd[1]: Stopped OpenVPN service.
Feb 28 06:13:18 srv systemd[1]: Starting OpenVPN service...
Feb 28 06:13:18 srv systemd[1]: Started OpenVPN service.

Quellcode

[Unit]
Description=OpenVPN service
After=network.target

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/bin/true
ExecReload=/bin/true
WorkingDirectory=/etc/openvpn

[Install]
WantedBy=multi-user.target

Quellcode

#!/bin/sh -e

### BEGIN INIT INFO
# Provides:      	openvpn
# Required-Start:	$network $remote_fs $syslog
# Required-Stop: 	$network $remote_fs $syslog
# Should-Start:  	network-manager
# Should-Stop:   	network-manager
# X-Start-Before:	$x-display-manager gdm kdm xdm wdm ldm sdm nodm
# X-Interactive: 	true
# Default-Start: 	2 3 4 5
# Default-Stop:  	0 1 6
# Short-Description: Openvpn VPN service
# Description: This script will start OpenVPN tunnels as specified
#          	in /etc/default/openvpn and /etc/openvpn/*.conf
### END INIT INFO

# Original version by Robert Leslie
# <rob@mars.org>, edited by iwj and cs
# Modified for openvpn by Alberto Gonzalez Iniesta <agi@inittab.org>
# Modified for restarting / starting / stopping single tunnels by Richard Mueller <mueller@teamix.net>

. /lib/lsb/init-functions

test $DEBIAN_SCRIPT_DEBUG && set -v -x

DAEMON=/usr/sbin/openvpn
DESC="virtual private network daemon"
CONFIG_DIR=/etc/openvpn
test -x $DAEMON || exit 0
test -d $CONFIG_DIR || exit 0

# Source defaults file; edit that file to configure this script.
AUTOSTART="all"
STATUSREFRESH=10
OMIT_SENDSIGS=0
if test -e /etc/default/openvpn ; then
  . /etc/default/openvpn
fi

start_vpn () {
	if grep -q '^[	 ]*daemon' $CONFIG_DIR/$NAME.conf ; then
  	# daemon already given in config file
  	DAEMONARG=
	else
  	# need to daemonize
  	DAEMONARG="--daemon ovpn-$NAME"
	fi

	if grep -q '^[	 ]*status ' $CONFIG_DIR/$NAME.conf ; then
  	# status file already given in config file
  	STATUSARG=""
	elif test $STATUSREFRESH -eq 0 ; then
  	# default status file disabled in /etc/default/openvpn
  	STATUSARG=""
	else
  	# prepare default status file
  	STATUSARG="--status /run/openvpn/$NAME.status $STATUSREFRESH"
	fi

	# tun using the "subnet" topology confuses the routing code that wrongly
	# emits ICMP redirects for client to client communications
	SAVED_DEFAULT_SEND_REDIRECTS=0
	if grep -q '^[[:space:]]*dev[[:space:]]*tun' $CONFIG_DIR/$NAME.conf && \
   	grep -q '^[[:space:]]*topology[[:space:]]*subnet' $CONFIG_DIR/$NAME.conf ; then
    	# When using "client-to-client", OpenVPN routes the traffic itself without
    	# involving the TUN/TAP interface so no ICMP redirects are sent
    	if ! grep -q '^[[:space:]]*client-to-client' $CONFIG_DIR/$NAME.conf ; then
        	sysctl -w net.ipv4.conf.all.send_redirects=0 > /dev/null

        	# Save the default value for send_redirects before disabling it
        	# to make sure the tun device is created with send_redirects disabled
        	SAVED_DEFAULT_SEND_REDIRECTS=$(sysctl -n net.ipv4.conf.default.send_redirects)

        	if [ "$SAVED_DEFAULT_SEND_REDIRECTS" -ne 0 ]; then
          	sysctl -w net.ipv4.conf.default.send_redirects=0 > /dev/null
        	fi
    	fi
	fi

	log_progress_msg "$NAME"
	STATUS=0

	start-stop-daemon --start --quiet --oknodo \
    	--pidfile /run/openvpn/$NAME.pid \
    	--exec $DAEMON -- $OPTARGS --writepid /run/openvpn/$NAME.pid \
    	$DAEMONARG $STATUSARG --cd $CONFIG_DIR \
    	--config $CONFIG_DIR/$NAME.conf || STATUS=1

	[ "$OMIT_SENDSIGS" -ne 1 ] || ln -s /run/openvpn/$NAME.pid /run/sendsigs.omit.d/openvpn.$NAME.pid

	# Set the back the original default value of send_redirects if it was changed
	if [ "$SAVED_DEFAULT_SEND_REDIRECTS" -ne 0 ]; then
  	sysctl -w net.ipv4.conf.default.send_redirects=$SAVED_DEFAULT_SEND_REDIRECTS > /dev/null
	fi
}
stop_vpn () {
  start-stop-daemon --stop --quiet --oknodo \
  	--pidfile $PIDFILE --exec $DAEMON --retry 10
  if [ "$?" -eq 0 ]; then
	rm -f $PIDFILE
	[ "$OMIT_SENDSIGS" -ne 1 ] || rm -f /run/sendsigs.omit.d/openvpn.$NAME.pid
	rm -f /run/openvpn/$NAME.status 2> /dev/null
  fi
}

case "$1" in
start)
  log_daemon_msg "Starting $DESC"

  # first create /run directory so it's present even
  # when no VPN are autostarted by this script, but later
  # by systemd openvpn@.service
  mkdir -p /run/openvpn

  # autostart VPNs
  if test -z "$2" ; then
	# check if automatic startup is disabled by AUTOSTART=none
	if test "x$AUTOSTART" = "xnone" -o -z "$AUTOSTART" ; then
  	log_warning_msg " Autostart disabled."
  	exit 0
	fi
	if test -z "$AUTOSTART" -o "x$AUTOSTART" = "xall" ; then
  	# all VPNs shall be started automatically
  	for CONFIG in `cd $CONFIG_DIR; ls *.conf 2> /dev/null`; do
    	NAME=${CONFIG%%.conf}
    	start_vpn
  	done
	else
  	# start only specified VPNs
  	for NAME in $AUTOSTART ; do
    	if test -e $CONFIG_DIR/$NAME.conf ; then
      	start_vpn
    	else
      	log_failure_msg "No such VPN: $NAME"
      	STATUS=1
    	fi
  	done
	fi
  #start VPNs from command line
  else
	while shift ; do
  	[ -z "$1" ] && break
  	if test -e $CONFIG_DIR/$1.conf ; then
    	NAME=$1
    	start_vpn
  	else
   	log_failure_msg " No such VPN: $1"
   	STATUS=1
  	fi
	done
  fi
  log_end_msg ${STATUS:-0}

  ;;
stop)
  log_daemon_msg "Stopping $DESC"

  if test -z "$2" ; then
	for PIDFILE in `ls /run/openvpn/*.pid 2> /dev/null`; do
  	NAME=`echo $PIDFILE | cut -c14-`
  	NAME=${NAME%%.pid}
  	stop_vpn
  	log_progress_msg "$NAME"
	done
  else
	while shift ; do
  	[ -z "$1" ] && break
  	if test -e /run/openvpn/$1.pid ; then
    	PIDFILE=`ls /run/openvpn/$1.pid 2> /dev/null`
    	NAME=`echo $PIDFILE | cut -c14-`
    	NAME=${NAME%%.pid}
    	stop_vpn
    	log_progress_msg "$NAME"
  	else
    	log_failure_msg " (failure: No such VPN is running: $1)"
  	fi
	done
  fi
  log_end_msg 0
  ;;
# Only 'reload' running VPNs. New ones will only start with 'start' or 'restart'.
reload|force-reload)
 log_daemon_msg "Reloading $DESC"
  for PIDFILE in `ls /run/openvpn/*.pid 2> /dev/null`; do
	NAME=`echo $PIDFILE | cut -c14-`
	NAME=${NAME%%.pid}
# If openvpn if running under a different user than root we'll need to restart
	if egrep '^[[:blank:]]*user[[:blank:]]' $CONFIG_DIR/$NAME.conf > /dev/null 2>&1 ; then
  	stop_vpn
  	start_vpn
  	log_progress_msg "(restarted)"
	else
  	kill -HUP `cat $PIDFILE` || true
	log_progress_msg "$NAME"
	fi
  done
  log_end_msg 0
  ;;

# Only 'soft-restart' running VPNs. New ones will only start with 'start' or 'restart'.
soft-restart)
 log_daemon_msg "$DESC sending SIGUSR1"
  for PIDFILE in `ls /run/openvpn/*.pid 2> /dev/null`; do
	NAME=`echo $PIDFILE | cut -c14-`
	NAME=${NAME%%.pid}
	kill -USR1 `cat $PIDFILE` || true
	log_progress_msg "$NAME"
  done
  log_end_msg 0
 ;;

restart)
  shift
  $0 stop ${@}
  $0 start ${@}
  ;;
cond-restart)
  log_daemon_msg "Restarting $DESC."
  for PIDFILE in `ls /run/openvpn/*.pid 2> /dev/null`; do
	NAME=`echo $PIDFILE | cut -c14-`
	NAME=${NAME%%.pid}
	stop_vpn
	start_vpn
  done
  log_end_msg 0
  ;;
status)
  GLOBAL_STATUS=0
  if test -z "$2" ; then
	# We want status for all defined VPNs.
	# Returns success if all autostarted VPNs are defined and running
	if test "x$AUTOSTART" = "xnone" ; then
  	# Consider it a failure if AUTOSTART=none
  	log_warning_msg "No VPN autostarted"
  	GLOBAL_STATUS=1
	else
  	if ! test -z "$AUTOSTART" -o "x$AUTOSTART" = "xall" ; then
    	# Consider it a failure if one of the autostarted VPN is not defined
    	for VPN in $AUTOSTART ; do
      	if ! test -f $CONFIG_DIR/$VPN.conf ; then
        	log_warning_msg "VPN '$VPN' is in AUTOSTART but is not defined"
        	GLOBAL_STATUS=1
      	fi
    	done
  	fi
	fi
	for CONFIG in `cd $CONFIG_DIR; ls *.conf 2> /dev/null`; do
  	NAME=${CONFIG%%.conf}
  	# Is it an autostarted VPN ?
  	if test -z "$AUTOSTART" -o "x$AUTOSTART" = "xall" ; then
    	AUTOVPN=1
  	else
    	if test "x$AUTOSTART" = "xnone" ; then
      	AUTOVPN=0
    	else
      	AUTOVPN=0
      	for VPN in $AUTOSTART; do
        	if test "x$VPN" = "x$NAME" ; then
          	AUTOVPN=1
        	fi
      	done
    	fi
  	fi
  	if test "x$AUTOVPN" = "x1" ; then
    	# If it is autostarted, then it contributes to global status
    	status_of_proc -p /run/openvpn/${NAME}.pid openvpn "VPN '${NAME}'" || GLOBAL_STATUS=1
  	else
    	status_of_proc -p /run/openvpn/${NAME}.pid openvpn "VPN '${NAME}' (non autostarted)" || true
  	fi
	done
  else
	# We just want status for specified VPNs.
	# Returns success if all specified VPNs are defined and running
	while shift ; do
  	[ -z "$1" ] && break
  	NAME=$1
  	if test -e $CONFIG_DIR/$NAME.conf ; then
    	# Config exists
    	status_of_proc -p /run/openvpn/${NAME}.pid openvpn "VPN '${NAME}'" || GLOBAL_STATUS=1
  	else
    	# Config does not exist
    	log_warning_msg "VPN '$NAME': missing $CONFIG_DIR/$NAME.conf file !"
    	GLOBAL_STATUS=1
  	fi
	done
  fi
  exit $GLOBAL_STATUS
  ;;
*)
  echo "Usage: $0 {start|stop|reload|restart|force-reload|cond-restart|soft-restart|status}" >&2
  exit 1
  ;;
esac

exit 0

# vim:set ai sts=2 sw=2 tw=0: