REMOTEPC LINUX SOFTWARE
One final aspect to consider when looking at a client/server solution is that, unless you use a commercial based solution, there is usually a somewhat strict need to ensure that the client and the server are made by the same software creator/distributor. Using a VPN also ensures your VNC data is encrypted end-to-end. One can also force the client to use a similarly high level. When there is a need to employ proper authentication, one can configure the VNC server to require a high level authentication mechanism. Whereas there are often fallback mechanisms in place, these would provide lower security by every level of fallback to a lower quality authentication method. It is important that the authentication of the VNC client and VNC server match. A vendor like RealVNC will you the VNC client 'for free', whereas the VNC server is a paid solution. A system administrator may have the VNC client utility/binary sitting directly on their local desktop for example. The VNC client is often used a standalone binary somewhere. A popular one is x11vnc, which runs a barebones VNC server. If you are more into open source, the Ubuntu list of VNC solutions has a nice starting list of VNC servers. Commercial solutions generally work well if you're managing many servers and clients as an SME. It is an excellent, well working and supported software package, intended for small business that do not want to spent too much time on getting something to work well. On the commercial side, there is RealVNC. The main one is preference, and it takes a bit of time to learn the myriad of options out there, and then to test a few. Which VNC server software you select will vary on a few factors. The best answer depends on your existing infrastructure, where the remote machine is located and whether you have a keyboard and mouse handy or not. This could be done over SSH remotely, though at times you could opt to go to the remote computer (if reasonably nearby), connect a keyboard and mouse, and setup VNC there. The VNC server needs to be installed on the remote workstation or server. It is mostly suited for home use, and small office users may find it helpful too, for example by having a single desktop on a single machine shared remotely and used by 1-3 users. Another issue is that VNC does not scale well to many users. Various options are included with various VNC software, but configuring them is often left to the user, especially with open source based solutions. At times, even clicking an icon to start an application can cause a slight delay as the screen needs to refresh. Watching 4K video on a remote desktop whilst using an ADSL Internet connection is unlikely to give favorable results. One of the main ones is that the display updates can be slow. There are some limitations when using VNC to manage and/or use remote desktops. It is as if you were sitting at the remote computer, albeit with some caveats and a bit of extra latency.
Under the hood, the VNC software will use the RFB (Remote Frame Buffer) protocol to send key strokes and mouse movements to the remote system. Welcome to the world of remote desktop computing, which allows you - by using a VNC (Virtual Network Computing) software package - to connect to the desktop/GUI of a remote computer.
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