Unlike with a VNC viewer, you can set up remote sessions with TeamViewer without any upstream port availability. Learn more about the free TeamViewer private-use version. Occasionally, these delays prevent operations from running smoothly. There may be additional constraints due to the comparatively large amounts of data that accumulate during VNC sessions. A connection cannot be made if these requirements haven’t been met. Another requirement is the availability of additional ports. In order to connect to VNC, suitable software is needed for both the server and the client computer.

The source code was released more than 20 years ago as a free software under the GNU General Public License. Its purpose is to transmit the VNC server’s screen content as well as the local client’s input. VNC also supports sessions with iOS and Android devices.Īn essential element of the VNC viewer is the remote framebuffer (RFB) protocol. A VNC session can function on any type of operating system that is installed on the server or client computer. VNC’s main function is to remotely control a computer (server) from a local computer (client) while displaying the VNC server’s screen content on the local monitor. VNC (Virtual Network Computing) was developed in the 1980s as a technique for controlling computers remotely.

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