This network diagram illustrates the connection methods of devices in a typical home network, including internet access, firewalls, wireless routers, printers, and laptops. External internet is protected by a firewall to shield the home network from external threats, while wireless routers provide wireless connectivity within the home, enabling easy network access for devices such as printers and laptops. This configuration not only offers convenient network access methods but also strengthens network security protection, ensuring the safety of family members' internet usage.