@rez I see. Cloudron apps do not run in host mode because we need the network isolation for security purposes. Still I am not sure I understand why a docker container cannot access external network regardless. I thought this was taken care of by linux routing.
@murgero Thanks for following up, apologies for not seeing this sooner.
I don’t really know if they are fully compatible. I started using it a number of years ago since it then was a more secure and faster VNC implementation. It works cross platform by downloading a server application from RealVNC, and then registering an account with them. The free tier allows for 5 desktops/servers. The added benefit from a simplicity point of is that you connect via the client app through their servers, eliminating the need to open standard VNC ports in your firewall.
I never did manage to find out how, and if, it is possible to connect in other ways. That’s why I was hoping someone else knew...