Chris: No, you need to be connected to the forest network when you want to setup/use the printer. It is probably possible to set something up so you could print to it from home but that would involve a lot of faffing about with port-forwarding and making the printer internet-facing, which is as bad idea.
Milk: That's probably a good idea. I'll look to see what options the printer has for restricting access to new clients/
Dawnsio 'mlaen i'r gwres prynhawn a rwy'n addo erbyn yfori byddai wedi mynd, hwyl fawr i pawb, hwyl fawr i pawb...