How One User Segments Home Wi-Fi Into Four Dedicated Networks for Better Security

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A home network enthusiast has configured their Wi-Fi router to broadcast four separate wireless networks, each serving a distinct purpose: primary use, guests, smart devices, and HVAC controls. Security settings vary by network, with the main and guest networks using WPA2/WPA3-Personal encryption and AES, while the smart device and HVAC networks add MAC address filtering for tighter access control. The HVAC network connects two smart thermostats to the internet, enabling remote monitoring and management via a mobile app from any location. Internet connectivity for the thermostats also enables automatic firmware update notifications, allowing users to install upgrades directly from the device screen. The setup reflects a growing practice of network segmentation to isolate different device types and reduce security risks in smart homes.

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