Fingbox is the home network security system that watches over your network to detect intruders, block devices and analyze the quality of your Wi-Fi and Internet connection.
https://www.fing.com/products/fingbox (https://www.fing.com/products/fingbox)
Alternatively, you can enable MAC address filtering on your home router.
https://www.cisco.com/assets/sol/sb/RV180W_Emulators/RV180W_Emulator_v1.0.3.14/help/en_US/firewall11.htm (https://www.cisco.com/assets/sol/sb/RV180W_Emulators/RV180W_Emulator_v1.0.3.14/help/en_US/firewall11.htm)
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