what is a router ?Router is a device that forwards the data packets along with the networks. A router is connected to at least 2 networks , commonly 2 LANs or WANs or a LAN and its network ISP's. Routers are located at the gateways, the places where two or more networks connect.
Routers uses the headers and forwarding tables to determine the best path for forwarding the packets, and they use the protocols such as the ICMP to communicate with each other and configure the best route between any two hosts.
Very little filtering of data is done through routers.
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