Virtualizing computer systems is sensible in many cases for reasons of both cost and security. However, if the virtualized system is communicating with serial devices (e.g. medical/weighing/measuring technology or wind power/photovoltaic systems etc.), there is the problem that the usual virtualization platforms provide insufficient support.
But the network connection of virtual guest systems is for the most part quite a mature approach, is stable and therefore also a good candidate for transporting serial communication. Using a Com-Server on the serial device side and a virtual COM port in the virtual machine, the serial data are simply and transparently tunneled through a network connection – unnoticed by the application, the serial device or the virtualization platform.