Authentication

Provides the method of identifying users, including login and password dialog, challenge and response, messaging support, and, depending on the security protocol you select, encryption

© 2007 Cisco Systems, Inc. All rights reserved. SNRS V2.0—2-5

Authentication is used to identify users before they gain access to the network and network services. This can include a login and password dialog, challenge and response, messaging support, and, depending on the security protocol that you select, encryption.

Authentication is configured by defining a named list of authentication methods, and then applying that list to an interface. The method list defines the types of authentication to be performed and the sequence in which they will be performed; it must be applied to a specific interface (for example, a vty or console) before any of the defined authentication methods will be performed. The only exception is the default method list (which is named "default"). The default method list is automatically applied to all interfaces if no other method list is defined. A defined method list overrides the default method list.

All authentication methods, except for local, line password, and enable authentication, must be defined through AAA.

© 2007 Cisco Systems, Inc. Trust and Identity 2-13

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