"Even small home networks are divided into subnets these days, thanks to the proliferation of combination router/firewall/wireless access points, and of course larger networks are subnetted, whether physically or with VLANs, for controlling access to network resources and easier administration. Sharing printers across subnets is not something that has been reduced to clicking a couple of checkboxes yet, and a lot of folks don't even know it can be done. With Linux it is fairly easy, but it takes some digging to learn how to do this. So I have dug, and today share the spoils of my digging.
"Printing in Linux presents a classic Linux paradox: CUPS, the Common Unix Printing System, is sophisticated and chock-full of advanced features that put its closed-source counterparts to shame. But despite being a mature application and the standard printing subsystem for virtually all Linux distributions, it's still rather painful to configure, especially sharing printers over a network. Some Linux distributions are positively confused when it comes to sharing printers; Fedora and Ubuntu, to give two examples, enable Avahi by default, but turn off all shared printing. I have yet to see a single Avahi-enabled device or service, but I know that most folks want to be able to use networked printers..."
