You have an IT department for a reason...use it. If someone tried pulling this kind of crap at one of the sites I manage (and people have tried), you'd be packing the hardware in the trunk of your car and taking it home with you. It's in your best interest, as well as your peers and clients, to follow whatever policies are in place. Maybe if you tried collaborating with your IT department you could have made this whole thing easier on yourself. More than likely there would have been someone willing to take your requirements and run with it to get your desired service up and running while making it compliant with whatever polices are in place.