Tailscale is probably what you want, but if you care about privacy you'll have to be sure to disable the telemetry/logging/spying option on each of your nodes.

Tailscale is probably what you want, but if you care about privacy you'll have to be sure to disable the telemetry/logging/spying option on each of your nodes. By default it will leak your so-called “private” network behavior to Tailscale (connections on what port, from what node, to what node, opened when, closed when): https://tailscale.com/docs/features/logging https://tailscale.com/docs/features/logging