CompTIA® Security+™: Study Guide, Fifth Edition

Implementing Access Control

Access control is a critical part of physical security. Systems must operate in controlled environments in order to be secure. These environments must be, as much as possible, safe from intrusion. Computer system consoles can be a vital point of vulnerability because many administrative functions can be accomplished from the system console. These consoles, as well as the systems themselves, must be protected from physical access. Two areas that help increase access control and make a system secure are physical barriers and biometrics, both of which are discussed in the following sections.

Physical Barriers

A key aspect of access control involves physical barriers. The objective of a physical barrier is to prevent access ...