Hub

A hub is a device that connects to several network devices by means of a cable. A hub usually has between 4 and 16 ports, each of which connects one network device to the hub via a patch cable. The functionality of hubs is limited exclusively to the distribution of information. There is no sorting of the received data packets. This means that the information received by the hub is transferred to all connected devices, even if they are not actually the recipients. Because of this, the load on the bandwidth of the entire network increases. For this reason and because of the high security vulnerabilities of a hub, they are rarely used nowadays.