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UltraVNC is notable as the base for free no-install remote help desk options including UltraVNC SC (Single Click) and PCHelpWare. These operate by generating pre-configured executables that can be downloaded and run on systems needing support; these applications then connect back to server software running on the system providing support.
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.
NAT passthrough: the ability to connect to the server behind a NAT without configuring the router's port forwarding rules. It offers an advantage when you can't reconfigure the router/firewall (for example in case it is on the Internet service provider's side), but is a serious security risk (unless the traffic is end-to-end encrypted), because ...
It also has options for connection via a secure SSL link. [4] An SSL Java VNC viewer applet is provided that enables secure connections from a web browser. The VeNCrypt SSL/TLS VNC security type is also supported. Many of the UltraVNC extensions to VNC are supported by x11vnc, including file transfer. [6]
Multiple clients may connect to a VNC server at the same time. There are a number of variants of VNC [2] which offer their own particular functionality; e.g., some optimised for Microsoft Windows, or offering file transfer (not part of VNC proper), etc. Many are compatible (without their added features) with VNC proper in the sense that a ...
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.
TightVNC uses so-called "tight encoding" of areas, which improves performance over low bandwidth connection. It is effectively a combination of the JPEG and zlib compression mechanisms. [5] [6] It is possible to watch videos and play DirectX games through TightVNC over a broadband connection, albeit at a low frame rate. [citation needed]
OBS Studio is a free and open-source app for screencasting and live streaming. Written in C / C++ and built with Qt , OBS Studio provides real-time capture, scene composition, recording, encoding, and broadcasting via Real-Time Messaging Protocol (RTMP), HLS , SRT, RIST or WebRTC .