Tailscale
Tailscale is a program like hamachi or ZeroTier but more usable in other things aside from gaming (it can also do that).
Here are some things that can be done with Tailscale:
📄️ Tailscale First Time Setup
This is a fundamental step in using tailscale.
📄️ Steam Family
Steam Family is a steam feature that allows up to 6 people to share game copies, caveat being needing to be within same household.
📄️ Game Streaming
This allows you to access games or computer from anywhere.
📄️ Tailscale Device Proxy
TSDP is an alternative to Tailscale Sidecar (see here for example configs), where the main difference is that TSDP is centralized and TS Sidecar would have each service have it's own tailscale instance running.