For system, network and cloud administrators
OpenVPN is a software compatible with both Windows and Linux, often used in corporations for creating secure connections towards their own internal IT infrastructure.
Open your Ubuntu terminal and type:
sudo apt-get install openvpn openvpn-systemd-resolved
Open your Ubuntu terminal and type:
sudo openvpn --config path-to-openvpn-config-file.ovpn
After running OpenVPN, the system will require you to enter your local super user (if prompted) and after that, for your OpenVPN user and password.