How to Harden Your Self-Hosted Server Before It Gets Compromised: Tailscale + Vaultwarden + YubiKey Setup

How to Actually Harden Your Self-Hosted Server Before It Gets Compromised (Tailscale + Vaultwarden Setup) TL;DR Close every public port. Run Vaultwarden behind Tailscale only. Add a YubiKey for 2FA. Back up encrypted. Do this before someone else doe...