OpenVPN Installation
From r00tedvw.com wiki
Reference: https://www.digitalocean.com/community/tutorials/how-to-set-up-an-openvpn-server-on-ubuntu-14-04
Installation performed on Ubuntu 14.04 Server instance.
Install OpenVPN & Easy RSA
~$ sudo apt-get update && sudo apt-get install -y openvpn easy-rsa