The Linksys WRT54G3G is a wireless router that also supports 3G cellular internet connectivity. It operates on both 2.4 GHz and 5 GHz frequencies and provides high-speed wireless internet access for multiple devices. The router features four Ethernet ports for wired connections, and supports VPN pass-through for secure remote access. The WRT54G3G also boasts a range of security features, including WPA and WEP encryption, and a built-in firewall to protect against unwanted access.

The WRT54G3G is a router manufactured by the company Linksys that allows multiple devices to connect to a network and communicate with each other. It works by receiving data packets from devices and forwarding them to their intended destination. The router is assigned a unique IP address 192.168.1.1, which serves as its identifier on the network.

To access the router's settings and configure its functions, users can log in using a web browser and their admin and admin. Once logged in, users can customize various settings such as network name, password, and security protocols. They can also set up parental controls, prioritize bandwidth usage, and monitor network activity.