Port security is not one of the most important features when it comes to securing your network and it does have its challenges, but this feature is definitely a nice layer of defense in your overall defense-in-depth strategy. In this course, you'll learn about port security, as well as the VLAN hopping attack and how it can be prevented. You'll explore several security techniques you can use to help harden the network against security attacks and how it can benefit you to break the network and network device functionality down into the three planes of operation - management, data, and control planes. You'll also examine examples of security technologies you can use at each plane of operation to harden the overall network. Finally, you'll learn about different approaches to providing secure access to data in network systems, including MAC, DAC, and RBAC. This course can be used in preparation for the 350-701: Implementing and Operating Cisco Security Core Technologies (SCOR) certification exam.