How to Install Wireguard VPN on Debian 11
Wireguard is a free and open-source VPN protocol alternative to IPSec, IKEv2, and OpenVPN. Wiruguard is designed for Linux and Unix operating systems, it runs on Linux kernel space, which makes the Wireguard faster and more reliable. In this tutorial, you will install and set up a VPN server via Wireguard on Debian 11 servers.
Source: Howtoforge Linux Howtos und Tutorials