Overview of Port Security

Port security is the security mechanism of controlling the devices connected to the network. It is applied to the access layer and can limit the hosts of using the device port, permitting some specified hosts to access the network, while the other hosts cannot access the network.

The port security function can bind the user MAC address, IP address, VLAN ID and port number, preventing the invalid user from accessing the network, so as to ensure the security of the network data and the valid user can get the enough bandwidth.