A low cost Parental Control Internet Filter and Monitor for up to 25 users with no subscription or support fees.Access Control. Block websites with filtering profiles: Prevent your family from accessing dangerous material online using the Web Filter or Content Filter. Choose specific websites to block, or choose from up to 55 categories provided by OpenDNS. Schedule access. Set internet schedules for certain devices: Enforce bedtimes by blocking internet on kids' devices. Plug-and-play set-up. Get started instantly: The NB-1 connects to your current router and provides its own wireless b/g/n connection. All you need to do is plug it in and turn off your router's wifi. Hardware based solution: Almost impossible to bypass, unlike many other software-based solutions.