If you want to surf from different countries, rename the unzipped OpenVPN configuration file from 'openvpn.ovpn' to e.g. 'CG_RO_NoSpy.ovpn' (or respective location/server group combination you have chosen while setting up the configuration file in your account management).

How to set up a Linux VPN server (Beginner’s Guide Jun 28, 2019 Install and Configure OpenVPN Server on Linux - Linux.com Jun 13, 2011

Jun 19, 2020

Configuration. Kerio Control VPN Client for Linux supports only one VPN connection at a time. During the package installation, a configuration wizard is automatically started. The wizard will ask for. the server name/address, username, password, automatic detection of the server's certificate fingerprint (for server identity verification). OpenVPN Server and Client Setup on Windows - Linux

How to install and configure WireGuard VPN on Linux

OpenVPN - MikroTik Wiki