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Remote access can also be explained as remote control of a computer by using another device connected via the internet or another network. This is widely used by many computer manufacturers and large businesses' help desks for technical troubleshooting of their customers' problems. There are various professional first-party, third-party, open source, and freeware remote desktop applications, some of which are cross-platform across various versions of Windows, Mac OS X, UNIX, and Linux.

How it works

Remote desktop virtualization implementations operate as client/server computing environments. The controlling computer (referred to in this context as the client) displays a copy of the image received from the controlled computer's (in this context the server) display screen. The copy is updated on a timed interval, or when a change on screen is noticed by the remote control software. The software on the controlling computer transmits its own keyboard and mouse activity to the controlled computer, where the remote control software implements these actions. The controlled computer then behaves as if the actions were performed directly at that computer. In many cases the local display and input devices can be disabled so that the remote session cannot be viewed or interfered with.

The quality, speed and functions of any remote desktop protocol are based on the system layer where the graphical desktop is redirected and the efficiency of the remote display protocol. Software such as VNC and others use the top software layer to extract and compress the graphic interface images for transmission. Other implementations such as Microsoft's RDP use a kernel driver level to construct the remote desktop for transmission of data.

We can also use TeamViewer to connect remotely to your friend:

Just click here to download a software