Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.14.1.0 - Page 837

To configure AAA authentication, use the aaa authentication command in CONFIGURATION mode. aaa authentication login {method-list-name | default} method [... method4] Configure AAA Authorization for Roles Authorization services determine if the user has permission to use a command in the CLI. Users with only privilege levels can use commands in privilege-or-role mode (the default) provided their privilege level is the same or greater than the privilege level of those commands. Users with defined roles can use commands provided their role is permitted to use those commands. Role inheritance is also used to determine authorization. Users with roles and privileges are authorized with the same mechanism. There are six methods available for authorization: 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 authorized with either a password that is not specific to their userid or with no password at all. Because of the lack of security, these methods are not available for role-based only mode. To configure AAA authorization, use the aaa authorization exec command in CONFIGURATION mode. The aaa authorization exec command determines which CLI mode the user will start in for their session; for example, Exec mode or Exec Privilege mode. For information about how to configure authentication for roles, see Configure AAA Authentication for Roles. aaa authorization exec {method-list-name | default} method [... method4] You can further restrict users' permissions, using the aaa authorization command command in CONFIGURATION mode. aaa authorization command {method-list-name | default} method [... method4] Examples of Applying a Method List The following configuration example applies a method list: TACACS+, RADIUS and local: ! radius-server host 10.16.150.203 key ! tacacs-server host 10.16.150.203 key ! aaa authentication login ucraaa tacacs+ radius local aaa authorization exec ucraaa tacacs+ radius local aaa accounting commands role netadmin ucraaa start-stop tacacs+ ! The following configuration example applies a method list other than default to each VTY line. NOTE: Note that the methods were not applied to the console so the default methods (if configured) are applied there. ! line console 0 exec-timeout 0 0 line vty 0 login authentication ucraaa authorization exec ucraaa accounting commands role netadmin ucraaa line vty 1 login authentication ucraaa authorization exec ucraaa accounting commands role netadmin ucraaa line vty 2 login authentication ucraaa authorization exec ucraaa accounting commands role netadmin ucraaa line vty 3 login authentication ucraaa Security 837