There are two basic tenets in information systems security that provide the basis of many of the security policies that govern server configuration and network access control: the CIA Triad and AAA policies. The CIA Triad defines the three fundamental areas of security, which are Confidentiality, Integrity, and Availability. AAA extends the CIA and provides protection through its elements: Authentication, Authorization, and Accounting. Research to learn the focus of each of the three parts of the AAA policies and the role each has in protecting a system or network.