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RealVNC is a company that provides remote access software. Their VNC Connect software consists of a server (VNC Server) and client (VNC Viewer) application, which exchange data over the RFB protocol to allow the Viewer to control the Server's screen remotely.
An additional security concern for the use of VNC is to check whether the version used requires authorization from the remote computer owner before someone takes control of their device. This will avoid the situation where the owner of the computer accessed realizes there is someone in control of their device without previous notice.
RFB was originally developed at Olivetti Research Laboratory (ORL) as a remote display technology to be used by a simple thin client with Asynchronous Transfer Mode connectivity called a Videotile. In order to keep the device as simple as possible, RFB was developed and used in preference to any of the existing remote display technologies.
Second, the VNC viewer may treat the scratch region in ways that confuse the user, for example displaying it to the user or automatically panning down into it if the mouse reaches the bottom of the real screen. The Unix VNC viewer in SSVNC automatically hides the scratch region. Finally, x11vnc's heuristics for caching and reusing window pixel ...
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]
UltraVNC allows the use of a remote computer as if the user were in front of it. This is achieved by sending mouse movements and key-presses to the remote computer, and replicating the remote computer's display (subject to differences in resolution) locally in real time. UltraVNC bears a strong resemblance to RealVNC Free Edition.
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.
The past few years however, Cendio AB who use it for their product ThinLinc is the main contributor to the project. [5] TigerVNC is fully open-source , with development and discussion done via publicly accessible mailing lists and repositories.