Home network security is often compromised when both Internet of Things (IoT) devices and guest devices are placed on a single guest network. This setup can expose vulnerable devices to malware from guests' smartphones. To mitigate this risk, experts recommend splitting the guest network into two distinct segments: one dedicated to IoT devices, which should be isolated from one another, and another for human visitors that allows for seamless interactions, such as casting media. The IoT segment should prioritize security with access point isolation, while the guest segment should support both 2.4 GHz and 5 GHz bands for optimal performance. Advanced routers, particularly those running custom firmware like OpenWRT, can facilitate this setup by allowing the configuration of multicast DNS profiles, enabling guests to cast content without compromising the main network's security. Standard ISP routers typically do not offer the necessary granular control, making it essential to consider upgrading to more robust networking hardware to implement these security measures effectively.