I have CNC machines running windows NT with ethernet connections that IT doesn’t want on the company wide network anymore. Do you have a device that will protect the network?

Yes.  Using Predator DNC Software, you can connect legacy CNCs running various editions of Windows to your corporate network.  Predator includes SecureDNC which provides a method of securing and transmitting to your CNC machines without connecting them to the company domain.  Check our our DNC Network Solutions for more details.