RustDesk still does not support encrypted connections when self hosting: https://github.com/rustdesk/rustdesk/issues/3714
> RustDesk still does not support encrypted connections when self hosting Not true at all. RustDesk connections are fully encrypted even when using a self-hosted server. What is not supported are encrypted direct endpoint-to-endpoint connections not going through a server at all, because that's not a use case RustDesk is designed for. The feature is intended for testing, which is why it's disabled altogether by defau…
Client -- Relay Server -- Host
That's certainly less than ideal since many remote desktop session will not be using a middle-age server but rather be direct between client and host.