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End-to-End DSL Architectures by Wayne C. Vermillion

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RADIUS Overview

Learning the basic operation of a RADIUS server in a dialup environment helps you understand its role in the SSG environment. RADIUS features are shown in Figure 5-2.

Figure 5-2. RADIUS Features

RADIUS allows access control to a single host, to a single application such as Telnet, or to a single protocol such as PPP. RADIUS is used in the following types of DSL network environments. Note that each requires high levels of security while maintaining network access for remote users:

  • Networks with multiple-vendor access servers, each supporting RADIUS server-based AAA. Each uses the same RADIUS server-based access database.

  • Networks ...

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