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
$ 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
You can then perform a sanity test with a connection from a VPN client with:
$ sudo su -
$ /vagrant/add-client.sh test-client
$ cp ~/client-configs/files/test-client.ovpn /vagrant
On the host, double click `test-client.ovpn` to load it into Tunnelblick
Use Tunnelblick to connect to the VPN server
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-client.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
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