Now let’s configure port security in Packet Tracer. If an unauthorized device is connected to the same port, you can define the action that the switch will take, such as discarding the traffic, sending an alert, or shutting down the port. This will enable you to restrict access to a given switch interface so that only the authorized devices can use it. Switch port Security is a network security feature that associates specific MAC addresses of devices(such as PCs) with specific interfaces on a switch. Hello and welcome! In this tutorial, we’ll have an overview of switch port security then configure it in Packet Tracer.