Internet TCP port 5902 is commonly used by Virtual Network Computing (VNC) systems for remote desktop access. For instance, software like RealVNC, TightVNC, and UltraVNC use this port to allow users to control another computer over a network connection. It is the second in a series of ports (5900-5906) reserved for this purpose. The specific port used can vary depending on the number of simultaneous remote connections a system is set up to handle.
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