November 2005
Intermediate to advanced
1152 pages
29h 9m
English
Content preview from Cisco Network Security Troubleshooting HandbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 9. Troubleshooting AAA on IOS Routers
AAA, which stands for Authentication, Authorization, and Accounting, is an integral part of security functionality on the Cisco IOS Router. As the name implies, authentication verifies who the users are, authorization allows or denies what users can do after authentication, and accounting logs user activity. Because this chapter launches the discussion of Network Access Control, a detailed explanation of AAA architecture is included, as is the protocol involved with it. This discussion forms the foundation knowledge required for understanding this chapter and the following AAA chapters on Switch, Private Internet Exchange (PIX) Firewall, and the Virtual Private Network (VPN) Concentrator. AAA protocol ...
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