Setup VNC server over secure SSH connection

By default, VNC sessions can be reached on ports 5901, 5902, 5903, and so on. Where the last digit of the port number corresponds to the number of the VNC session.

Authentication of the VNC session is usually done by a password. Under certain circumstances, the remote desktop is also protected by username and password. But the authentication and its transmission, as well as the transmission of the subsequent VNC session is unencrypted. This means that an attacker can access the login data and also the VNC session from the data stream.