Like the idea. Configuring a firewall can be a nightmar3.
It works ad described. Installation was simple and easy. Finding the needed C outlet for the USB supply was my only problem. Firewalla discovered 17 devices connected, including itself and the router. I found two unidentified devices, and the app allowed me to block them. I wish that the software will allow a "whitelist" of MAC address to be configured, preventing any new device to get into my Wi-Fi network unless I allow them.