We have filed a complaint against our ISP due to them enforcing a "data cap" on their advertised "unlimited" date plan. We've gotten "warnings" the past two months after YEARS of never having a problem. (And, yes, the ISP is Comcast!) What we do want to check is to make sure that ONLY our own devices are making a connection to our router. Comcast has been making Xfinity WiFI available to nearly every nook and cranny of the area and my suspicion is that they can only do this by somehow piggy-backing on existing customers' routers throughout the vicinity. If that's so, then anyone who accesses Xfinity WiFi in the neighborhood could reasonably be getting their data assigned to the paying customer's account. Is this feasible? I have access to our Router and have checked connected devices, reset the router and checked again. But, what I need is something that can monitor each device's data and bandwidth use. There is a free one called, NetWorx. Is anyone familiar with this? I'm keen to be cautious about this kind of freeware.