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Cisco Access Control Security: AAA Administrative Services by Brandon Carroll

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Chapter 1. Authentication, Authorization, and Accounting Overview

Authentication, authorization, and accounting (AAA) is a way to control who is allowed to access your network (authenticate), what they can do while they are there (authorize), and to audit what actions they performed while accessing the network (accounting).

AAA can be used in Internet Protocol Security (IPSec) to provide preshared keys during the Internet Security Association and Key Management Protocol (ISAKMP) process or to provide per-user authentication, known as XAUTH, during ISAKMP ...

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