An administrator wants to use a Linux server's GUI remotely but is limited by security to using TCP port 22. Which of the following is the BEST choice for installation on the Linux server to enable…

X-forwarding (X11 forwarding) is built into SSH and uses port 22, but it is primarily designed for running individual graphical applications remotely, not for a full, performant remote desktop session.

NX (NoMachine NX) is a remote desktop solution that offers good performance but typically uses its own dedicated ports (e.g., 4000), and while it could be tunneled, VNC is a more commonly recognized and widely available solution for general remote GUI over SSH.

VNC (Virtual Network Computing) provides a full remote desktop environment, allowing an administrator to view and interact with the server's GUI as if local. Although VNC natively uses ports like 5900+, its traffic can be securely tunneled over SSH (which uses TCP port 22) using local port forwarding, making it a robust and commonly used solution when direct access to other ports is restricted.

XRDP provides an RDP server for Linux, enabling Windows Remote Desktop clients to connect, but it typically uses TCP port 3389 and would also need to be tunneled over SSH, making VNC a more traditional and common Linux-centric solution for this scenario.