How to Setup IKEv2 IPSec VPN Using strongSwan and Let’s Encrypt on Rocky Linux 9
In this tutorial, you will learn how to set up an IKEv2 IPSec VPN using strongSwan using EAP-MSCHAPv2 authentication along with Let’s Encrypt SSL certificates on a Rocky Linux 9 server. You will also learn how to connect to the VPN using Windows, macOS, Linux, and Android clients.
Source: Howtoforge Linux Howtos und Tutorials