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VNC over SSH can be faster than X11 over SSH, [4] specially reducing latency over the internet. [5] In this case, Xvfb is often combined with a lightweight window manager (such as Fluxbox or Openbox) and a VNC server such as X11vnc. A possible sequence of commands to start this on the server is:
x11vnc keeps a copy of the X server's frame buffer in RAM.The X11 programming interface XShmGetImage is used to retrieve the frame buffer pixel data. x11vnc compares the X server's frame buffer against its copy to see which pixel regions have changed (and hence need to be sent to the VNC viewers.)
The initial versions of the XRDP project relied on a local VNC server installation that had to be present alongside the program, in order to relay the graphics and controls between the user and the server [7] (known as the "VNC forwarding mode"). However, this mode is currently not recommended to use anymore, due to its slow performance.
In computer networking, LibVNCServer and LibVNCClient are cross-platform C libraries for the VNC server and client implementations. [2] [3] Both libraries support version 3.8 of the Remote Framebuffer Protocol, are fully IPv6-conformant and can handle most known VNC encodings.
Linux, UNIX and BSD support remote administration via remote login, typically via SSH (The use of the Telnet protocol has been phased out due to security concerns). X-server connection forwarding, often tunneled over SSH for security, allows GUI programs to be used remotely. VNC is also available for these operating systems.
TightVNC is a free and open-source remote desktop software server and client application for Linux and Windows. A server for macOS is available under a commercial source code license only, without SDK or binary version provided. [3] Constantin Kaplinsky developed TightVNC, [4] using and extending the RFB protocol of Virtual Network Computing ...
TigerVNC is an open source Virtual Network Computing (VNC) server and client software, started as a fork of TightVNC in 2009. [2] The client supports Windows, Linux and macOS. The server supports Linux. There is no server for macOS [3] and as of release 1.11.0 the Windows server is no longer maintained. [4]
RFB ("remote framebuffer") is an open simple protocol for remote access to graphical user interfaces.Because it works at the framebuffer level it is applicable to all windowing systems and applications, including Microsoft Windows, macOS, the X Window System and Wayland.