We have been facing a lot of issues where users will copy large amounts of data from network shares across the WAN onto their local computers.
This causes a lot of congestion on the network and we would like to somehow restrict it :)
Any suggestions?
Well, do they need access to these files? If so, the most you can do is put some sort of traffic shaping in place.
Alternatively, spin up a terminal server so that the users can RDP to that and access the files "locally" instead of needing to schlep them across the WAN.