Dell Configuration Guide for the S4048–ON System 9.14.2.5

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]

aaa authorization command {method-list-name | default} method [… method4]

The following configuration example applies a method list: TACACS+, RADIUS and local:

!
radius-server host 10.16.150.203 key <clear-text>
!
tacacs-server host 10.16.150.203 key  <clear-text>
!
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.

!
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
authorization exec ucraaa
accounting commands role netadmin ucraaa
line vty 4
login authentication ucraaa
authorization exec ucraaa
accounting commands role netadmin ucraaa
line vty 5
login authentication ucraaa
authorization exec ucraaa
accounting commands role netadmin ucraaa
line vty 6
login authentication ucraaa
authorization exec ucraaa
accounting commands role netadmin ucraaa
line vty 7
login authentication ucraaa
authorization exec ucraaa
accounting commands role netadmin ucraaa
line vty 8
login authentication ucraaa
authorization exec ucraaa
accounting commands role netadmin ucraaa
line vty 9
login authentication ucraaa
authorization exec ucraaa
accounting commands role netadmin ucraaa
!