CentOS 8 set up WireGuard VPN server

A virtual private network (VPN) extends a private network across a public network, and enables users to send and receive data across shared or public networks securely in encrypted format. This in-depth tutorial will explain how to set up a WireGuard VPN between a CentOS 8 Linux server, and a Ubuntu/CentOS, desktop client including firewalld masquerading configuration between internal and public zones.