x11vnc

x11vnc is a command-line tool that allows remote access to the X Window System desktops. It functions as a VNC server, which means it can be used to share or control a graphical desktop session over a network.

One of the key features of x11vnc is its ability to create a virtual X server, allowing remote clients to connect to the X server running on the machine. This means that users can share their current desktop session or start a new one specifically for remote access.

x11vnc supports various authentication methods, including password-based authentication and SSL/TLS encryption. This ensures secure remote connections between the VNC server and clients.

The tool provides several options for customization, such as the ability to only allow connections from specific IP addresses, restrict access to certain users, or define access control lists. These options help in maintaining the security and privacy of the desktop session.

x11vnc also offers features like screen sharing, where multiple clients can connect and view the same desktop simultaneously. It provides various performance optimizations, like compression and adaptive quality, to ensure smooth remote desktop experience even over low-bandwidth connections.

Additionally, x11vnc supports on-the-fly resizing of the remote desktop, making it convenient for users to adjust the display resolution to match their client device.

Overall, x11vnc is a versatile and powerful command-line tool that enables remote access and control of X Window System desktops while prioritizing security and customization options.