TomatoUSB is a feature of Tomato firmware that allows you to mount a flash drive or USB external hard drive to your router. Once file sharing is enabled, your router becomes a network attached storage (NAS) appliance. And with the media server enabled, you’ll be able to stream music and videos to any DLNA compliant device on your network.

When you setup a guest network on most consumer-rated routers, the WiFi clients are not isolated. This can be a real problem, especially if you have file sharing enabled on your computer and you don’t know it! With Tomato firmware, you can setup Guest WiFi in such a way that their computer will not be able to see other devices on your network.