TecAdmin published a tutorial about installing x11vnc server on Fedora.
How to Install x11vnc Server on Fedora
Remote desktops can be used in a variety of ways to gain access to a computer for example VNC, RDP, ssh, XDMCP, ICA, and many others. The x11vnc is an example of a Virtual Network Computing (VNC) server that allows a remote client to connect to a computer running the x11vnc software