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Then we will install the xfce4 and its packages. To being with the installation and setting up the VNC server on our Ubuntu machine we will elevate the shell to root from a basic user. Windows 10 Machine: Client System Lab Setup We will be using a Windows machine as the host and all 3-machine described below will be hosted virtually. In real-life environments, there will be an elaborate setup where VNC will be used however to make the understanding a bit simple we will be taking a basic setup that will include 3 machines. We will see in-depth in the article how the traffic of VNC authentication looks. The Passwords that were implemented into the service were plain text in the beginning but they not anymore. At the time of the invention, the RFB protocol was not at all secure.

Now that we have a brief understanding of the VNC service. However, the VNC and the RFB that we discussed earlier are the Trademarks of RealVNC Ltd. Many services are derived from VNC that was made open source under the GNU General Public Licence. The VNC service was developed by the Olivetti & Oracle Research Lab in the United Kingdom. The VNC is platform-independent that means it can work with Linux and Windows whereas the RDP can only work between two Windows Machines. Defining like that seems so similar to the Remote Desktop Protocol that we discussed some while back but there is a prominent difference between the two. It is an interactive session since the user can give the mouse and keyboard inputs through VNC to the original system.

VNC or Virtual Network Computing is a service that uses the Remote Frame Buffer protocol to enable graphical remote access of another system.

Authentication Capture using Fake Service.

Through that, we are trying to explain how an attacker can breach security in various scenarios with the installation and configuration, enumeration, and precautions as well. In this article, we are discussing Internal Penetration Testing on the VNC server.