Spin up an OpenVPN Server

http://www.vagrantup.com
https://www.virtualbox.org (don't worry about setting up any VMs as the steps below will cover this)
http://git-scm.com

Edit /etc/hosts locally and add `192.168.50.11 vpn.dev`
$ git clone https://github.com/redgeoff/openvpn-server-vagrant.git
$ cd openvpn-server-vagrant
$ cp config-default.sh config.sh
Edit config.sh and fill in your config
$ vagrant up
$ vagrant ssh

Routes must be added to the server so that you clients know which traffic to route to the VPN Server. The following process should be repeated for each subnet in your network.

Edit /etc/openvpn/server.conf and add something like the following, where 172.31.26.0 is your network and 255.255.255.0 is the netmask.

push "route 172.31.26.0 255.255.255.0"

Then restart the VPN Server:

$ sudo systemctl restart openvpn@server

The following should be repeated for each new client/user for whom you wish to grant access to your VPN. Replace client-name with a unique name.

$ sudo su -
$ /vagrant/add-config.sh client-name

You will then find a file like the following that you should provide to the individual who will be connecting to your VPN. This ovpn file can then be used with Tunnelblick (OS X), OpenVPN (Linux, iOS, Android and Windows).

~/client-configs/files/client-name.ovpn

If you ever need to revoke access, simply execute:

$ sudo su -
$ /vagrant/revoke-full.sh client-name

• See Using a VPN Server to Connect to Your AWS VPC for Just the Cost of an EC2 Nano Instance
• See How To Set Up an OpenVPN Server on Ubuntu 16.04