Current prerelease is 1.2.5
1.2.4 is the first to introduce experimental Wayland support. Especially on KDE Plasma there are supposed to be some issues.
Lets test!
Why?
Regular RDP/VNC programs are hard to use in real scenarios, as they rely on IP addresses. RustDesk is easier as it uses a Rendezvouz server that can also be selfhostet or reimplemented.
Not recommending against RustDesk - it is a very cool project - but regarding the “Why?”, you could use a VPN or something like Tailscale which has MagicDNS that’ll resolve hostnames of computers to their local IP address. You can use this with GNOME’s RDP server to remote in from another device pretty easily.
Only the Tailscale pairing server is proprietary but there’s a FOSS self-hostable alternative called Headscale.
The Tailscale clients are FOSS.
There isn’t much of a guide, you install the Tailscale clients and make an account on their website. After you enroll your devices to the account with a code they’ll be able to access each other via private IPs on an encrypted network based on WireGuard.
You can connect among devices with unsecured protocols like VNC because they’ll be inside the encrypted network. And this works with any app and any protocol not just remote desktop — you can use Syncthing, access files, access any services you want securely etc.