The virtual private networks (VPN for short) have grown to be one of the most critical assets in many both IT and non-IT companies. They've allowed the industry to resume work with centralised systems from any location, therefore allowing the increased security and bigger flexibility.

There's a multitude of different VPN technologies available out in the wild, using a plethora of different protocols and concepts. Within this guide we'll concentrate on the following software stacks:

- OpenVPN
- strongSwan