These are the manual instructions for installing and configuring OpenVPN client
See the Section at the end if you are using untangle.
Download openvpn gui at http://openvpn.net/index.php/open-source/downloads.html#latest-stable
Leave the components section as default.
Accept the TAP driver install
Right click on OpenVPN GUI and select properties
Go to Compatibility tab and select “run this program as administrator”
(It requires admin priviledges because it needs to write routes for the new VPN tunnel. Without, it will connect but won’t know how to reach the other network.)
Get your OpenVPN configuration files from the system administrator. Copy and paste them into C:\Program Files\OpenVPN\config
client dev tun0 cert jason.crt key jason.key ca ca.crt remote vpn.server 1194
Now you can launch OpenVPN GUI by double clicking the icon on the desktop (the one we just set to run as admin). This will launch the OpenVPN GUI into the system tray.
Click on system tray, right click on OpenVPN GUI, left click “Connect”.
If all goes well, you will successfully connect. The OpenVPN GUI systray icon turns green. Now you are on the Virtual Private Network!