I'd like to determine the instantaneous transfer rate of each device connected to my router. I don't have access to all these devices, and some of them aren't computers. I don't need these transfer rates to be continuously monitored and stored, I just need to see the current rate of each computer to see which one is doing a large download/upload.
Is there some program that can allow me to see the transfer rate of each device connected to my router (which is a Netgear WNDR4000)?