What is the name of the network device that connects multiple devices to the internet? A router connects networks and forwards data packets between them, including between a local network and the internet.
A router examines destination information in each packet and uses a routing table to choose the next network or interface. In a home, it typically links phones, computers, televisions, and other devices on a local area network to an internet service provider’s network. Many home routers also provide Wi-Fi, switching, firewall functions, and network address translation.
A switch connects devices within the same local network, while a router connects different networks. A modem translates or terminates the signal used by an internet service, although consumer equipment often combines a modem and router in one box. A hub is a simpler older device that broadcasts traffic to every connected port.
Routers are considered Layer 3 devices because their main forwarding decisions use network-layer addresses such as IP addresses. Large routers also direct traffic between businesses, data centers, internet providers, and backbone networks.