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OpenVPN wil ping niet via tunnel laten lopen (Windows)

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Topicstarter
Ik wil 2 sites via internet met elkaar verbinden zodat men vanuit plaats A kan printen naar plaats B.
Ik wil dit met OpenVPN voor elkaar zien te krijgen.
2 weken bijna onafgebroken hiermee bezig geweest. 8)7
Er is een testopstelling van gemaakt.

Op de pc (Windows 10) met ipadres 192.168.178.52 draait de OpenVPN server met ipadres 10.123.0.1 netmask 255.255.255.252. De pc is via een switch verbonden met een internetmodem. Een lanpoort van dat modem is verbonden met de wan van een router. Op een lanpoort van de router is een laptop (Windows10) aangesloten. De laptop heeft het ipadres 192.168.0.192. Op de laptop draait OpenVPN client met ipadres 10.123.0.50. Alle firewalls zijn uitgezet. Op de modem en router is de betreffende udp-poort geforward.

Ik kan vanuit de laptop de OpenVPN server pingen (10.123.0.1) en andersom (10.123.0.50). Door het toevoegen van een route kan ik ook ipadres 192.168.178.52 pingen. Maar pingen vanaf de pc naar 192.168.0.192 lukt niet. Het lijkt mij dat dat een vereiste is om een netwerkshare mogelijk te maken (printer).
Het viel me op dat de TAP-interface op de pc niet een gateway heeft. Door een route toe te voegen is de gateway alsnog ingesteld (10.123.0.0). Ik heb voor de 10.123.0.0 gekozen omdat de client-kant wel een gateway heeft (10.123.0.4 255.255.255.252) op de OpenVPN client. Als ik dus vanuit de pc ping naar 192.168.0.192 dan wil het pakketje alleen maar via de lokale gateway gaan (192.168.178.1). De metrics aanpassen verandert hier niks aan.

Heb het ook geprobeerd met de ingebouwde VPN van Windows maar kom daarbij tegen dat door Microsoft updates zoals de fall creators update problemen kunnen ontstaan. Los daarvan krijg ik een melding over het aanpassen van policies waar ik niet goed raad mee weet.

Het liefst zou ik de laptop in hetzelfde netwerk zien als de pc maar het configureren wordt dan een stuk lastiger met OpenVPN. Kan iemand me verder helpen?

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Routes over de VPN moet je toevoegen in de VPN server .conf (`route ...` en `push "route ..."`. Je vermeld nergens hoe je routes toevoegt. Ook zou ik tun ipv tap suggereren. En `topology subnet` / `push "topology subnet"`.

Post eens een netwerkschema/tekening (met IP's) en de configuratie van OpenVPN (server en client).

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Topicstarter
Dit is de vereenvoudigde versie van hoe het uiteindelijk moet worden:

Afbeeldingslocatie: https://s22.postimg.cc/g1zg8kk7x/Tekening3.png

Dit is de testopstelling bij me thuis:

Afbeeldingslocatie: https://s22.postimg.cc/i6jt9ne4t/Tekening1.png

Dit is de OpenVPN server configuratie:

#################################################
# 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 1194

# 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 Ethernet 2

# 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 "C:\\Program Files\\OpenVPN\\config\\ca.crt"
cert "C:\\Program Files\\OpenVPN\\config\\server.crt"
key "C:\\Program Files\\OpenVPN\\config\\server.key" # This file should be kept secret

# Diffie hellman parameters.
# Generate your own with:
# openssl dhparam -out dh2048.pem 2048
dh "C:\\Program Files\\OpenVPN\\config\\dh2048.pem"

# Network topology
# Should be subnet (addressing via IP)
# unless Windows clients v2.0.9 and lower have to
# be supported (then net30, i.e. a /30 per client)
# Defaults to net30 (not recommended)
;topology subnet

# 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 10.123.0.1. Comment this line out if you are
# ethernet bridging. See the man page for more info.
server 10.123.0.0 255.255.255.0

# 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 192.168.178.0 255.255.255.0"
push "route 192.168.178.52 255.255.255.255"
push "route 10.123.0.0 255.255.255.0"


# 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 192.168.0.0 255.255.255.0
# 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 10.9.0.0 255.255.255.252
# 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"

# 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"
;push "dhcp-option DNS 10.123.0.1"

# 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.
# Note that v2.4 client/server will automatically
# negotiate AES-256-GCM in TLS mode.
# See also the ncp-cipher option in the manpage
cipher AES-256-CBC

# Enable compression on the VPN link and push the
# option to the client (v2.4+ only, for earlier
# versions see below)
;compress lz4-v2
;push "compress lz4-v2"

# For compression compatible with older clients use comp-lzo
# 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 nobody

# 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

# Notify the client that when the server restarts so it
# can automatically reconnect.
explicit-exit-notify 1


En deze van de client:

##############################################
# Sample client-side OpenVPN 2.0 config file #
# for connecting to multi-client server. #
# #
# This configuration can be used by multiple #
# clients, however each client should have #
# its own cert and key files. #
# #
# On Windows, you might want to rename this #
# file so it has a .ovpn extension #
##############################################

# Specify that we are a client and that we
# will be pulling certain config file directives
# from the server.
client

# Use the same setting as you are using on
# the server.
# 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,
# you may need to disable the firewall
# for the TAP adapter.
;dev-node MyTap

# Are we connecting to a TCP or
# UDP server? Use the same setting as
# on the server.
;proto tcp
proto udp

# The hostname/IP and port of the server.
# You can have multiple remote entries
# to load balance between the servers.
remote x.x.x.x (ipadres provider) 1194
;remote my-server-2 1194

# Choose a random host from the remote
# list for load-balancing. Otherwise
# try hosts in the order specified.
;remote-random

# Keep trying indefinitely to resolve the
# host name of the OpenVPN server. Very useful
# on machines which are not permanently connected
# to the internet such as laptops.
resolv-retry infinite

# Most clients don't need to bind to
# a specific local port number.
nobind


# Downgrade privileges after initialization (non-Windows only)
;user nobody
;group nobody

# Try to preserve some state across restarts.
persist-key
persist-tun

# If you are connecting through an
# HTTP proxy to reach the actual OpenVPN
# server, put the proxy server/IP and
# port number here. See the man page
# if your proxy server requires
# authentication.
;http-proxy-retry # retry on connection failures
;http-proxy [proxy server] [proxy port #]

# Wireless networks often produce a lot
# of duplicate packets. Set this flag
# to silence duplicate packet warnings.
;mute-replay-warnings

# SSL/TLS parms.
# See the server config file for more
# description. It's best to use
# a separate .crt/.key file pair
# for each client. A single ca
# file can be used for all clients.
ca "C:\\Program Files\\OpenVPN\\config\\ca.crt"
cert "C:\\Program Files\\OpenVPN\\config\\client1.crt"
key "C:\\Program Files\\OpenVPN\\config\\client1.key"

# Verify server certificate by checking that the
# certicate has the correct key usage set.
# This is an important precaution to protect against
# a potential attack discussed here:
# http://openvpn.net/howto.html#mitm
#
# To use this feature, you will need to generate
# your server certificates with the keyUsage set to
# digitalSignature, keyEncipherment
# and the extendedKeyUsage to
# serverAuth
# EasyRSA can do this for you.
remote-cert-tls server

# If a tls-auth key is used on the server
# then every client must also have the key.
;tls-auth ta.key 1

# Select a cryptographic cipher.
# If the cipher option is used on the server
# then you must also specify it here.
# Note that v2.4 client/server will automatically
# negotiate AES-256-GCM in TLS mode.
# See also the ncp-cipher option in the manpage
cipher AES-256-CBC

# Enable compression on the VPN link.
# Don't enable this unless it is also
# enabled in the server config file.
#comp-lzo

# Set log file verbosity.
verb 3

# Silence repeating messages
;mute 20


De virtuele TAP-interface wordt door OpenVPN geïnstalleerd als 2e netwerkkaart in Windows en staat los van de OpenVPN-instelling tap of tun.
Ik gebruik geen Linux die .conf bestanden gebruikt maar Windows die (server/client).ovpn gebruikt.
De routes voeg ik toe in de command line (Cmd) met een commando zoals bv : route add 192.168.0.0 mask 255.255.255.0 10.123.0.1 if 16 metric 25

[ Voor 152% gewijzigd door Verwijderd op 30-05-2018 09:47 ]


  • Xenir
  • Registratie: Augustus 2016
  • Laatst online: 15-11 19:44
Volgens mij het je iroute statements nodig in het CCD bestand, zie https://community.openvpn.net/openvpn/wiki/RoutedLans

Verwijderd

Zoals @Xenir al aangaf mis je `iroute`. En iedere `push "route .."` vereist ook een `route ...`.
OpenVPN beheert zelf de routes, deze hoef je niet toe te voegen via `route add`.

offtopic:
Windows als router. Ik lach me dood. :D


Gebruik Wireshark om te kijken of je packets de VPN ingaan. En op de andere device of ze aankomen (en geaccepteerd worden, of gedropt/reset).



Verder ontbreekt in de server.conf:
code:
1
remote-cert-eku "TLS Web Client Authentication"


De client.conf mist o.a.:
code:
1
2
3
verify-x509-name 'C=NL, ST=NH, L=Amsterdam, O=Example, OU=Example terminal, CN=terminal.vpnserver.fqdn.example.net, name=terminal.vpnserver.fqdn.example.net, emailAddress=vpn@example.net' subject

remote-cert-eku "TLS Web Server Authentication"

[ Voor 22% gewijzigd door Verwijderd op 30-05-2018 15:32 ]


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Topicstarter
Ivm de client file in de CCD-directory. Ik kan nergens duidelijk terugvinden hoe je die aanmaakt. De ccd directory heb ik wel aangemaakt onder de config-directory maar wat ik dan moet doen? Geen idee.Het iroute-commando wordt zowel in de server.ovpn als in de client.ovpn niet geaccepteerd. Als commando in de CMD: openvpn --iroute 192.168.0.0 255.255.255.0 ook niet. Waar gebruik ik dat "iroute"-commando? De howto heb ik een paar keer doorgelezen maar die zegt alleen dat die file aangemaakt moet worden maar niet hoe je dat moet doen.

Verwijderd

Je zou ook de handleiding kunnen lezen. De client-config-dir bevat voor iedere host een bestand genaamd naar de fqdn van de client (waar achter het netwerk zich bevind). De conclusie dat iroute niet in de server.conf/client.conf werkt is correct, dat werkt alleen in de client config (ccd op de VPN server).
handleiding: The next step is to create a file called client2 in the ccd directory. This file should contain the line:
code:
1
iroute 192.168.4.0 255.255.255.0

  • temp00
  • Registratie: Januari 2007
  • Niet online

temp00

Als het kan ben ik lam

Verander dit:
code:
1
2
3
push "route 192.168.178.0 255.255.255.0"
push "route 192.168.178.52 255.255.255.255"
push "route 10.123.0.0 255.255.255.0"

Eens in dit:
code:
1
push "route 192.168.178.0 255.255.255.0"
(dus alle routes verwijderen behalve die). Tevens alle iroutes verwijderen en ccd verwijzingen uitschakelen. Zo heb ik het zelf werken. Niet vergeten de OpenVPN server te herstarten als je conf wijzigingen heb gedaan.

Mocht het nog niet werken dan kan je nog dit proberen op de OpenVPN server in een command prompt (dus niet in de OpenVPN conf file):
Command prompt > route -P add 10.123.0.0 mask 255.255.255.0 192.168.178.52

Als dat niet werkt wil ik je met klem aanraden om Win10 te laten vallen en OpenVPN server te installeren op Linux (bijv. op Ubuntu desktop of Ubuntu server). Desnoods op een VM. Ik had zelf ook behoorlijk veel gezeik dit werkend te krijgen onder Windows. Op een gegeven overgestapt naar Ubuntu server en sindsdien draait het als een zonnetje met super weinig system resources.

edit: Eerst even bovenstaande proberen maar dit subnet klopt volgens mij ook niet "Ik heb voor de 10.123.0.0 gekozen omdat de client-kant wel een gateway heeft (10.123.0.4 255.255.255.252)".

[ Voor 8% gewijzigd door temp00 op 30-05-2018 23:16 ]

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Topicstarter
@Verwijderd en @Xenir

In de HOWTO staat:

Including multiple machines on the client side when using a routed VPN (dev tun):

client-config-dir ccd

In the above directive, ccd should be the name of a directory which has been pre-created in the default directory where the OpenVPN server daemon runs. On Linux this tends to be /etc/openvpn and on Windows it is usually \Program Files\OpenVPN\config.

De daemon verwijst volgens mij naar de 'openvpn.exe' die in de bin-map staat. In die map heb ik dus de ccd-map aangemaakt. Je hebt het over een client config bestand. Is dat de client.conf waar Linux mee werkt? In dat geval maak ik voor windows dan een ovpn-bestand aan met de naam van de client en sla ik 'm op als client1.ovpn in de ccd-map, maar ik heb geen idee of dat kan of klopt of moet dat bestand misschien helemaal geen extensie hebben? In deze client1.ovpn staat dan de regel: iroute 192.168.0.0 255.255.255.0
De handleiding waarnaar je verwijst heb ik al -tig keer doorgelezen. Niet echt duidelijk vind ik, of mijn verstand denkt op een zijspoor.

Verder heb ik in de server.ovpn wat dingen veranderd:

route 192.168.0.0 255.255.255.0
push "route 192.168.0.0 255.255.255.0"
push "route 192.168.178.0 255.255.255.0"

om het voorbeeld van de 'routedlans' aan te houden.

In principe zou de push "route 192.168.0.0 255.255.255.0" niet gebruikt hoeven te worden omdat de client voor deze route niet naar de VPN verwezen hoeft te worden, de client maakt immers zelf deel uit van dat netwerk.
Maar het 'routedlans' voorbeeld zegt:

Note that even if you only have 1 lan behind 1 client, YOU STILL NEED IROUTE. You will need it any time a clients source IP address is different from the IP given to it by the vpn server.

Ik heb het op die manier aangehouden.

@temp00
Mocht het nog niet werken dan kan je nog dit proberen op de OpenVPN server in een command prompt (dus niet in de OpenVPN conf file):
Command prompt > route -P add 10.123.0.0 mask 255.255.255.0 192.168.178.52
Deze route wordt geaccepteerd op de pc waar de OpenVPN-server op draait.
edit: Eerst even bovenstaande proberen maar dit subnet klopt volgens mij ook niet "Ik heb voor de 10.123.0.0 gekozen omdat de client-kant wel een gateway heeft (10.123.0.4 255.255.255.252)".
Dit wordt automatisch toegewezen door OpenVPN. De server-kant heeft een ip adres van 10.123.0.1 met een netmask van 255.255.255.252 en de client-kant een ipadres van 10.123.0.50 met een netmask van 255.255.255.252. Twee aparte subnetten dus. Geen idee of dat kwaad kan.

Ik kan vanaf de serverkant 10.123.0.50 pingen en vanaf de clientkant de 10.123.0.1.
Het pingen naar de 192.168.178.52 lukt niet (lan achter OpenVPN-server) vanuit de client (komt wel aan op de pc (wireshark) maar gaat niet verder), en vanaf de serverkant lukt het niet naar de clientkant met ipadres 192.168.0.192 (wordt wel de OpenVPN-interface (10.123.0.1) ingestuurd maar komt niet aan op de clientkant.)

@Verwijderd

Heeft dat wat volgens jou nog aan de server.conf toegevoegd moet worden 'remote cert...' enz. hier ook invloed op?

  • _root
  • Registratie: Augustus 2003
  • Laatst online: 12:56
Openvpn op Linux is erg vervelend als routes niet kloppen, ik weet niet hoe dat op een windows machine zit.

In een ccd file geef je aan welk netwerk er ACHTER de client nog leeft in de vorm:
iroute 192.168.0.0 255.255.255.0
Let op dat de naam van de clientfile gelijk moet zijn met de commonname van de client.

Op server routeer je het netwerk achter de client naar het 2e adres van je tun interface:
route add 192.168.0.0 mask 255.255.255.0 10.123.0.2.

Normaal kan dit in de server.conf zetten in de vorm van:
route 192.168.0.0 255.255.255.0

Bij het herstarten van de service worden dan de routes goed gezet.

PVoutput 3250 WP


  • BernardV
  • Registratie: December 2003
  • Nu online
Kan het zijn dat ip forwarding aan moet staan? Op windows zo te doen:
https://docs.microsoft.co...er/cc962461(v=technet.10)

  • _root
  • Registratie: Augustus 2003
  • Laatst online: 12:56
bernardV schreef op donderdag 31 mei 2018 @ 13:11:
Kan het zijn dat ip forwarding aan moet staan? Op windows zo te doen:
https://docs.microsoft.co...er/cc962461(v=technet.10)
Goed punt... :)

PVoutput 3250 WP


Verwijderd

Topicstarter
De IP forwarding stond telkens al aan.
De vraag is o.a. of het aanmaken van de ccd file goed is gedaan op de manier zoals ik heb beschreven.

[ Voor 91% gewijzigd door Verwijderd op 31-05-2018 17:45 ]


  • Brahiewahiewa
  • Registratie: Oktober 2001
  • Laatst online: 30-09-2022

Brahiewahiewa

boelkloedig

Verwijderd schreef op dinsdag 29 mei 2018 @ 12:30:
... de OpenVPN server met ipadres 10.123.0.1 netmask 255.255.255.252.
Hûh? waarom netmask 255.255.255.252 ?
Dan verklein je je netwerk tot 2 hosts ofzo. Dat je 10.123.0.50 niet kunt bereiken is het logische gevolg van deze beslissing

QnJhaGlld2FoaWV3YQ==


Verwijderd

Topicstarter
@Brahiewahiewa
Dat je 10.123.0.50 niet kunt bereiken is het logische gevolg van deze beslissing
is in tegenspraak met wat ik eerder zei:
Ik kan vanaf de serverkant 10.123.0.50 pingen en vanaf de clientkant de 10.123.0.1.
Ik heb het inmiddels wel aangepast door de ";" weg te halen voor de 'topology subnet'-regel in de server.ovpn
Nu heb ik de 10.123.0.1 en de 10.123.0.48 (eerder 10.123.0.50) in 1 subnet zitten voor de client en server met netmask 255.255.255.0

Ik weet niet zeker of het komt doordat beide ipadressen van de tunnel nu in 1 subnet zitten maar ik kan nu wel vanuit de pc de 192.168.0.192 (laptop) pingen. Vanuit de laptop naar 192.168.178.52 (pc) helaas nog niet. Als dat is gelukt dan kan ik hopelijk de printer gebruiken vanuit het andere netwerk.

[ Voor 24% gewijzigd door Verwijderd op 31-05-2018 23:12 ]


Verwijderd

Topicstarter
Ik heb alles nog weer even gecheckt.
Ik had op een gegeven moment Windows opnieuw op de pc geïnstalleerd.
Natuurlijk vergeten om in het register de ipforwarding te enabelen.
Ik ben nu verder dan ik ooit ben geweest.
Ik kan nu vanuit de clientlan het serverlan volledig pingen.
Ik laat het weten wanneer het allemaal is gelukt.

[ Voor 10% gewijzigd door Verwijderd op 01-06-2018 10:44 ]


Verwijderd

Topicstarter
Het wil nog niet zo lukken.
Ik heb nu een bridge configuratie ingesteld, anders krijg ik waarschijnlijk moeite met het delen van de printer.
Er is verbinding tussen de server en client.
De client heeft ipadres 192.168.178.200 toegewezen gekregen en bevindt zich in dezelfde lan als de server.
Het lukt me niet om vanuit de server de client te pingen maar andersom wel (Wireshark laat helemaal niks zien).Alleen loopt dit niet via de tunnel maar via gateway 192.168.0.1 ondanks de push "redirect-gateway def1" in de server.ovpn.

De server.ovpn:
#################################################
# 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 1194

# 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 "C:\\Program Files\\OpenVPN\\config\\ca.crt"
cert "C:\\Program Files\\OpenVPN\\config\\server.crt"
key "C:\\Program Files\\OpenVPN\\config\\server.key" # This file should be kept secret

# Diffie hellman parameters.
# Generate your own with:
# openssl dhparam -out dh2048.pem 2048
dh "C:\\Program Files\\OpenVPN\\config\\dh2048.pem"

# Network topology
# Should be subnet (addressing via IP)
# unless Windows clients v2.0.9 and lower have to
# be supported (then net30, i.e. a /30 per client)
# Defaults to net30 (not recommended)
;topology subnet

# 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 10.123.0.1. Comment this line out if you are
# ethernet bridging. See the man page for more info.
;server 10.123.0.0 255.255.255.0

# 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 192.168.178.1 255.255.255.0 192.168.178.200 192.168.178.254

# 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 192.168.178.0 255.255.255.0"
;push "route 192.168.178.52 255.255.255.255"
;push "route 10.123.0.0 255.255.255.0"


# 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 192.168.0.0 255.255.255.0
# 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 10.9.0.0 255.255.255.252
# 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"

# 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 62.179.104.196"
push "dhcp-option DNS 213.46.228.196"
;push "dhcp-option DNS 10.123.0.1"

# 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.
# Note that v2.4 client/server will automatically
# negotiate AES-256-GCM in TLS mode.
# See also the ncp-cipher option in the manpage
cipher AES-256-CBC

# Enable compression on the VPN link and push the
# option to the client (v2.4+ only, for earlier
# versions see below)
;compress lz4-v2
;push "compress lz4-v2"

# For compression compatible with older clients use comp-lzo
# 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 nobody

# 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

# Notify the client that when the server restarts so it
# can automatically reconnect.
explicit-exit-notify 1



client.ovpn:
##############################################
# Sample client-side OpenVPN 2.0 config file #
# for connecting to multi-client server. #
# #
# This configuration can be used by multiple #
# clients, however each client should have #
# its own cert and key files. #
# #
# On Windows, you might want to rename this #
# file so it has a .ovpn extension #
##############################################

# Specify that we are a client and that we
# will be pulling certain config file directives
# from the server.
client

# Use the same setting as you are using on
# the server.
# 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,
# you may need to disable the firewall
# for the TAP adapter.
dev-node Mytaps

# Are we connecting to a TCP or
# UDP server? Use the same setting as
# on the server.
;proto tcp
proto udp


# The hostname/IP and port of the server.
# You can have multiple remote entries
# to load balance between the servers.
remote ipadres provider 1194
;remote my-server-2 1194

# Choose a random host from the remote
# list for load-balancing. Otherwise
# try hosts in the order specified.
;remote-random

# Keep trying indefinitely to resolve the
# host name of the OpenVPN server. Very useful
# on machines which are not permanently connected
# to the internet such as laptops.
resolv-retry infinite

# Most clients don't need to bind to
# a specific local port number.
nobind


# Downgrade privileges after initialization (non-Windows only)
;user nobody
;group nobody

# Try to preserve some state across restarts.
persist-key
persist-tun

# If you are connecting through an
# HTTP proxy to reach the actual OpenVPN
# server, put the proxy server/IP and
# port number here. See the man page
# if your proxy server requires
# authentication.
;http-proxy-retry # retry on connection failures
;http-proxy [proxy server] [proxy port #]

# Wireless networks often produce a lot
# of duplicate packets. Set this flag
# to silence duplicate packet warnings.
;mute-replay-warnings

# SSL/TLS parms.
# See the server config file for more
# description. It's best to use
# a separate .crt/.key file pair
# for each client. A single ca
# file can be used for all clients.
ca "C:\\Program Files\\OpenVPN\\config\\ca.crt"
cert "C:\\Program Files\\OpenVPN\\config\\client1.crt"
key "C:\\Program Files\\OpenVPN\\config\\client1.key"

# Verify server certificate by checking that the
# certicate has the correct key usage set.
# This is an important precaution to protect against
# a potential attack discussed here:
# http://openvpn.net/howto.html#mitm
#
# To use this feature, you will need to generate
# your server certificates with the keyUsage set to
# digitalSignature, keyEncipherment
# and the extendedKeyUsage to
# serverAuth
# EasyRSA can do this for you.
remote-cert-tls server

# If a tls-auth key is used on the server
# then every client must also have the key.
tls-auth "C:\\Program Files\\OpenVPN\\config\\ta.key" 1

# Select a cryptographic cipher.
# If the cipher option is used on the server
# then you must also specify it here.
# Note that v2.4 client/server will automatically
# negotiate AES-256-GCM in TLS mode.
# See also the ncp-cipher option in the manpage
cipher AES-256-CBC

# Enable compression on the VPN link.
# Don't enable this unless it is also
# enabled in the server config file.
comp-lzo

# Set log file verbosity.
verb 3

# Silence repeating messages
;mute 20
Wie wil/kan mij hier bij helpen?
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