This seems really nice! May I ask how you set it up? Is it a question of configuring routing, a firewall, or both? Does it matter if you have separate or a shar

This seems really nice! May I ask how you set it up? Is it a question of configuring routing, a firewall, or both? Does it matter if you have separate or a shared subnet? I have some router with Shibby Tomato laying around (DD-WRT is unsupported), but I'm not sure if I need some other hardware, software, or if it's just a matter of finding the right settings…