Alt refers to the “Alt” key on a PC, Win to the “Windows” key (represented by the Super keysyms over the RFB protocol), and Cmd to the “Command” key on a Mac. UltraVNC is an extremely popular remote desktop software application which allows you to easily access another computer from another computer over the internet. There are numerous VNC implementations (LibVNC, TightVNC, UltraVNC, etc.) which run on Windows, Linux, macOS, iOS, Android and other operating systems. You can use any VNC client you like to connect on port 5900 (IIRC). Under 'Sharing' in control panel you can enable 'Screen Sharing'. Suffixes L and R refer to the left and right variants of keys. Macs have a built in VNC server that is disabled by default (as it should be). This marks a compatibility break with VNC Enterprise Edition 4.4 and earlier.ĭefinitions: On this page, a Mac’s “Option/Alt” key is referred to as Opt. (It is most similar to the “AltGr” key on non-US PC keyboards.) Consequently, the Mac’s “Option/Alt” key is not mapped to the “Alt” keysyms over the RFB protocol. For example, the key marked “Alt” on modern Macs (also known as the “Option” key) performs a different function to the “Alt” key on PC keyboards.

Some keys will be unique, and some keys with the same name perform will perform different functions. If you are connecting to a Mac from a Windows or Linux PC or vice versa, the two computers will likely have different keyboards.

This article summarizes the keys and key combinations you need to press in order to achieve the result you expect if you are connecting to or from a Mac.

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