| The router is a tool of defence against | | | | However, the proper software and special PCs |
| attacking our computer. We can use it in case | | | | are able to act as a router. |
| of security of our internet and PC. A more | | | | |
| precise definition of a router is a computer | | | | Routers operate in two different planes: |
| networking device that interconnects separate | | | | |
| logical subnets. Routers have many types but | | | | • Control Plane, in which the router |
| basically all are doing the same job. | | | | learns the outgoing interface that is most |
| | | | appropriate for forwarding specific packets |
| A router is a computer whose software and | | | | to specific destinations, |
| hardware are usually tailored to the tasks of | | | | |
| routing and forwarding, generally containing | | | | • Forwarding Plane, which is |
| a specialized operating system and one or | | | | responsible for the actual process of sending |
| more processors. | | | | a packet received on a logical interface to |
| | | | an outbound logical interface. |