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Securing access management is one of the most efficient ways to protect from unauthorized access. AAA framework offers an access-management solution that enforces a policy-based solution that controls user access to network and network resources.
This chapter illustrated essential steps in planning and implementing AAA technologies on Cisco devices. The chapter also details the basic architecture of the security protocols RADIUS and TACACS+ that are used in the AAA framework.
The chapter gave a generalized view of a Cisco-based AAA implementation, featuring a network access server (NAS, which is any Cisco device such as a router) and an AAA server using RADIUS or TACACS+ protocol.
The chapter concludes with some basic configuration examples implemented on a Cisco IOS–based device (router, switch).
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