Your smart fridge and security camera shouldn't have access to your private PC files. Here is how to keep them separate What is a Guest Network? It is a virtual "silo" that allows internet access without letting devices communicate with your main network. Setup: Enable "Guest Network" in your router settings. Isolation: Move all IoT, smart speakers, and guest devices to this network. Conclusion: Securing your home network takes ten minutes but offers lifelong peace of mind.