How To Extend Your Wireless Network with Tomato-Powered Routers. This, combined with TP-LINK Powerline Starter Kit means I now have Internet in my garage! My garage is a metal building separated from the house so this is actually a big step forward. And here I've been wondering what to do with my old router since I upgraded a couple years ago. Technically people are doing this with wifi only (no physical connections) but that wasn't going to work with what I have setup. I've tested with a host of devices, transitioning from garage to house is pretty seamless.     #>