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⇤ ← Revision 14 as of 2007-05-20 06:19:36 →
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← Revision 17 as of 2007-08-11 06:03:06 → ⇥
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Editor: JunYang
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Deletions are marked like this. Additions are marked like this.
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The[http://en.wikipedia.org/wiki/Virtual_private_network VPN] is implimented with[http://www.openvpn.org OpenVPN]. The VPN ([http://en.wikipedia.org/wiki/Virtual_private_network Virtual Private Network]) running on the Babase server uses the [http://www.openvpn.org OpenVPN] implementation.
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== Installing the Babase VPN ==
=== Mac OSX ===		 == Babase VPN on Mac OS X ==
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Go to http://www.tunnelblick.net/ and download the latest released version which will extract itself upon downloading. Available[http://www.tunnelblick.net/Tunnelblick_3.0_B4.zip here] Go to http://www.tunnelblick.net/ and download the latest released version which will extract itself upon downloading.
 * Version 3.0_B4 is available[http://www.tunnelblick.net/Tunnelblick_3.0_B4.zip here]
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When you run Tunnelblick you will, I think, want to configure it so that it does _not_ run the up/down scripts to change the nameserver. If you find this to be the case, please update this wiki with the proper instructions. [[Anchor(client.conf)]] When you run Tunnelblick you will see a little tunnel at the top right hand corner of the screen which will let you connect by selecting "Connect 'openvpn'" and disconnect with the "Disconnect 'openvpn'" commands through the graphical dropdown. It may be helpful to have tunnelblick be in your startup items so you don't have to run it every time you want to connect on computers that are typically used for ranking.
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=== The client.conf file ===
{{{
##############################################
# Client-side OpenVPN 2.0 config file #
# for connecting to the babase VPN on. #
# papio.biology.duke.edu. #
# #
# On Windows, you might want to rename this #
# file so it has a .ovpn extension #
##############################################		 == BabaseVPN on Windows XP ==
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# Specify that we are a client and that we
# will be pulling certain config file directives
# from the server.
client		 As Administrator, install [http://www.openvpn.se/ OpenVPN GUI for Windows]. Unless you already have OpenVPN (without GUI) installed on your computer, it is easiest to download and install the installation package with both OpenVPN and OpenVPN GUI. Once installation completes, you should notice a new OpenVPN GUI icon in your system tray (at the lower-right corner of your desktop). The icon should be lit red at this point, because you have not made a VPN connection yet.
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# 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		 Download the following two files, and place them in the {{{C:\\Program Files\OpenVPN\config\}}} directory on your computer:
 * [{{{albertslab.crt}}}]
 * [{{{papio.ovpn}}}]
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# 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		 Now, to connect, right click on the OpenVPN GUI icon in your system tray, and choose "Connect". You will be prompted for your Duke Biology Unix user name and password. If the connection is successful, the icon will turn green. To disconnect, simply right lick on the icon and choose "Disconnect".
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# Are we connecting to a TCP or
# UDP server? Use the same setting as
# on the server.
;proto tcp
proto udp		 ==== Optional Tweaks to Configuration ====
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# The hostname/IP and port of the server.
# You can have multiple remote entries
# to load balance between the servers.
remote papio.biology.duke.edu 1194
;remote my-server-2 1194		 By default, OpenVPN GUI will start in your system tray whenever your computer starts up. If you do not want this behavior, you can use [http://www.microsoft.com/technet/sysinternals/Utilities/AutoRuns.mspx AutoRuns for Windows] to tweak it.
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# Choose a random host from the remote
# list for load-balancing. Otherwise
# try hosts in the order specified.
;remote-random		 If you normally use your Windows XP computer as a non-Administrator user, you should create a shortcut to {{{C:\\Program Files\OpenVPN\bin\openvpn-gui.exe}}}, right-click on the shortcut, select "Properties", click "Advanced..." and select "Run with different credentials". Now, when you double-click this shortcut, you should choose to run it as Administrator (VPN will not function correctly if you do not run it as Administrator). The How-To section of the [http://openvpn.se/howto.html OpenVPN GUI website] has more information on how to run VPN as a non-admin user.
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# 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		 == Note on Using the Babase VPN ==
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# Most clients don't need to bind to
# a specific local port number.
nobind		 When you start the VPN you will be asked for your Duke Biology Unix user name and password.
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# 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 albertslab.crt
;cert client.crt
;key client.key
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
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}}}

[[Anchor(albertslab.crt)]]
=== The root certificate authority ===
This data belongs in a file named: {{{albertslab.crt}}}

The root certificate authority certificate for the babase VPN is:

{{{
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----}}}

== Using the Babase VPN ==
When you start the VPN you will be asked for your Duke Biology Unix username and password.

To test the vpn use the "ping" program to ping {{{papio-vpn.biology.duke.edu}}} (aka 172.16.3.1). If you get a response the VPN is working.		 To test the VPN use the "ping" program to ping {{{papio-vpn.biology.duke.edu}}} (aka 172.16.3.1). If you get a response the VPN is working.

The VPN ([http://en.wikipedia.org/wiki/Virtual_private_network Virtual Private Network]) running on the Babase server uses the [http://www.openvpn.org OpenVPN] implementation.

Babase VPN on Mac OS X

You always have the option of installing the application using the instructions on the OpenVPN [http://www.openvpn.org web site], but the easier way, if you've Mac OS X 10.3 or higher, is to use the pre-packaged OpenVPN that includes a management GUI.

Note: This will probably work for Mac OS X 10.3 or 10.4 on the PPC/Intel architecture. If you have an older version we'll have to do something else.

Go to http://www.tunnelblick.net/ and download the latest released version which will extract itself upon downloading.

When the program is done downloading and extracts itself, place it in your applications folder then drag the icon in the applications folder to your dock.

Open your home folder and go to Library. Then open the folder entitled openvpn.

In this folder you will need to place two files in this directory.

When you run Tunnelblick you will see a little tunnel at the top right hand corner of the screen which will let you connect by selecting "Connect 'openvpn'" and disconnect with the "Disconnect 'openvpn'" commands through the graphical dropdown. It may be helpful to have tunnelblick be in your startup items so you don't have to run it every time you want to connect on computers that are typically used for ranking.

BabaseVPN on Windows XP

As Administrator, install [http://www.openvpn.se/ OpenVPN GUI for Windows]. Unless you already have OpenVPN (without GUI) installed on your computer, it is easiest to download and install the installation package with both OpenVPN and OpenVPN GUI. Once installation completes, you should notice a new OpenVPN GUI icon in your system tray (at the lower-right corner of your desktop). The icon should be lit red at this point, because you have not made a VPN connection yet.

Download the following two files, and place them in the C:\\Program Files\OpenVPN\config\ directory on your computer:

  • [albertslab.crt]

  • [papio.ovpn]

Now, to connect, right click on the OpenVPN GUI icon in your system tray, and choose "Connect". You will be prompted for your Duke Biology Unix user name and password. If the connection is successful, the icon will turn green. To disconnect, simply right lick on the icon and choose "Disconnect".

Optional Tweaks to Configuration

By default, OpenVPN GUI will start in your system tray whenever your computer starts up. If you do not want this behavior, you can use [http://www.microsoft.com/technet/sysinternals/Utilities/AutoRuns.mspx AutoRuns for Windows] to tweak it.

If you normally use your Windows XP computer as a non-Administrator user, you should create a shortcut to C:\\Program Files\OpenVPN\bin\openvpn-gui.exe, right-click on the shortcut, select "Properties", click "Advanced..." and select "Run with different credentials". Now, when you double-click this shortcut, you should choose to run it as Administrator (VPN will not function correctly if you do not run it as Administrator). The How-To section of the [http://openvpn.se/howto.html OpenVPN GUI website] has more information on how to run VPN as a non-admin user.

Note on Using the Babase VPN

When you start the VPN you will be asked for your Duke Biology Unix user name and password.

To test the VPN use the "ping" program to ping papio-vpn.biology.duke.edu (aka 172.16.3.1). If you get a response the VPN is working.

To connect to papio using the VPN you cannot use papio.biology.duke.edu. Use papio-vpn.biology.duke.edu (172.16.3.1) instead.

BabaseVPN (last edited 2018-01-24 20:16:04 by JakeGordon)

Wiki content based upon work supported by the National Science Foundation under Grant Nos. 0323553 and 0323596. Any opinions, findings, conclusions or recommendations expressed in this material are those of the wiki contributor(s) and do not necessarily reflect the views of the National Science Foundation.