Install krfb by entering the following commands in the terminal:
sudo apt update sudo apt install krfb
Description:
Desktop Sharing utility
KDE Desktop Sharing is a manager for easily sharing a desktop session with another system. The desktop session can be viewed or controlled remotely by any VNC or RFB client, such as the KDE Remote Desktop Connection client. . KDE Desktop Sharing can restrict access to only users who are explicitly invited, and will ask for confirmation when a user attempts to connect. . This package is part of the KDE networking module.
Homepage: http://www.kde.org/
Version: 4:17.12.3-0ubuntu1
Section: universe/net