I understang xfi sends a notification when something connects to my network. However, is there a way that unknown devices cannot acces the network without a approval?
What device are you seeing? My ethernet-connected devices like my computer are not blocked. Those that use wifi can't connect unless the correct SSID/password is entered.
When friends and relatives visit, I have to give them my SSID/password to connect or I can tell them to use the xfinitywifi SSID that doesn't need a password.
What devices are you seeing?