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How do I configure the OpenVPN client on a Windows workstation?

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Views: 11329
Votes: 5
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Posted: 06 Feb, 2007
by: Warasin P.
Updated: 28 Apr, 2007
by: Warasin P.
  • Go to VPN > Openvpn Server
  • Download the CA certificate using the link Download CA Certificate
  • Save the certificate to C:Program FilesOpenvpnconfigcacert.pem
  • Next you will need a configuration options for the OpenVPN 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


# 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 my-server-1 1194


# 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 cacert.pem

# Use Username and Password Authentication
auth-user-pass

# Verify server certificate by checking
# that the certicate has the nsCertType
# field set to "server".  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 nsCertType
# field set to "server".  The build-key-server
# script in the easy-rsa folder will do this.
;ns-cert-type 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.
;cipher x

# 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
  • Copy the information above into a text file and save the file as  c:\Program Files\Openvpn\config\clientconfig.ovpn
  • Open the configuration file and change the remote server setting to the IP Address of the remote server
  • Then click File > Save to save the changes
  • Right-click the OpenVPN Client Icon in the taskbar and select Connect
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