We are a school with limited bandwidth. We have tons of Windows clients which are not joined to the domain, and we will never directly manage. Is it possible to set up a WSUS server that will impersonate Microsoft's update servers internally on our network by setting up local DNS, or is there a good way to set up a similar system instead using a proxy?
WSUS would be nicer for statistics on clients if its possible, but if we are able to save some bandwidth by using a proxy server that may work OK too. The biggest thing is that we are not able to modify every machine on that network, it must work based on infrastructure changes alone.