What is your issue with Rustdesk? I would understand if you mention Teamviewer, which runs through 3rd party servers, but Rustdesk? Is the client phoning home despite self-hosting or what do you mean? I am seriously interested.
On the other hand, I would not use RDP over the Internet without a VPN or at least an RDP Gateway in between both parties.
What is your issue with Rustdesk? I would understand if you mention Teamviewer, which runs through 3rd party servers, but Rustdesk? Is the client phoning home despite self-hosting or what do you mean? I am seriously interested.
On the other hand, I would not use RDP over the Internet without a VPN or at least an RDP Gateway in between both parties.