Thank you for the question. Please open the following ports:
TCP 5473 – for getting the list of shared USB devices and detailed information about them;
UDP 5474 – for broadcasting, to automatically discover devices shared in the local network;
UDP 5475 – for receiving a response to a broadcast request;
TCP 5475 – for remote service management;
TCP port specified in the sharing options on the server.
On Windows, these ports are used by UsbConfig.exe and UsbService.exe (or UsbService64.exe if you have a 64-bit OS).
Yes, the ports should be opened on both server and client machines.
Boris Hohlenko | Eltima Customer Support | http://www.eltima.com