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Dell Configuration Guide for the S4048–ON System 9.14.2.4

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Configure AAA Authentication for Roles

Authentication services verify the user ID and password combination. Users with defined roles and users with privileges are authenticated with the same mechanism. There are six methods available for authentication: radius, tacacs+, local, enable, line, and none.

When role-based only AAA authorization is enabled, the enable, line, and none methods are not available. Each of these three methods allows users to be verified with either a password that is not specific to their user ID or with no password at all. Because of the lack of security these methods are not available for role only mode. When the system is in role-only mode, users that have only privilege levels are denied access to the system because they do not have a role. For information about role only mode, see Configuring Role-based Only AAA Authorization.

NOTE Authentication services only validate the user ID and password combination. To determine which commands are permitted for users, configure authorization. For information about how to configure authorization for roles, see Configure AAA Authorization for Roles.
To configure AAA authentication, use the aaa authentication command in CONFIGURATION mode.
aaa authentication login {method-list-name | default} method [… method4]

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