WireGuard + RADIUS Setup on Ubuntu

I’m running an Ubuntu VPS and want to turn it into a WireGuard VPN And RADIUS server that authenticates users against RADIUS. also need to migrate my existing Mikrotik User Managers all user to the RADIUS. What I need is a clean installation and configuration of WireGuard, full integration with the RADIUS so that user creation and revocation stay centralised, and a short set of commands or notes I can reuse when I add new clients in the future.

Key points for this assignment
• Ubuntu (latest LTS) is already provisioned with root access.
• Mikrotik User Manager is live and reachable; I can supply the shared secret and connection details.
• Only RADIUS-based logins should be accepted by WireGuard once you’re done.

Deliverables
1. Working WireGuard server on the VPS with at least one test client showing successful RADIUS-backed authentication.
2. Configuration files, firewall rules, and any custom scripts neatly commented.
3. A concise step-by-step read-me covering how to add or disable users via RADIUS and how to restart services if needed.

I will test by connecting from a desktop and confirming that authentication logs appear both on the VPS and inside RADIUS. If everything checks out, the project is complete.