I am running Ubuntu 18.04 LTS. My Remmina has worked fine, connecting to windows and other Linux machines. But it has now refused to connect to my mac book.
The server is fine. Ping, nmap, ssh all work.
I have chosen RDP protocol and LTS for security and has enabled "screen sharing" on macbook.
But Remmina still won't connect.
What should I do.
Mac Screen Sharing uses VNC for the connection. RDP will not work in this situation.
When you setup Screen Sharing on the Mac you give it a separate password than what you use for ssh which uses your standard login password of the Mac. The username you use when setting up Remmina is the same username you log into the Mac with if you're the administrator. You could also set the users with access in the Allow access for: box. The password is the one you setup in the Screen Sharing, within the Computer Settings... button, which is limited to 8 characters.
This screenshot came from within Remmina connected to my Macbook showing the VNC password limited to 8 characters when I set it up:
This is how my Remmina settings connecting to my Macbook look:
Hope this helps!
