Dell S6100 Configuration Manual page 783

1 Locally define a system administrator user role. This gives you access to login with full permissions even if network connectivity to
remote authentication servers is not available.
2 Configure login authentication on the console. This ensures that all users are properly identified through authentication no matter the
access point.
If you do not configure login authentication on the console, the system displays an error when you attempt to enable role-based only
AAA authorization.
3 Specify an authentication method list—RADIUS, TACACS+, or Local.
You must specify at least local authentication. For consistency, the best practice is to define the same authentication method list
across all lines, in the same order of comparison; for example VTY and console port.
You could also use the default authentication method to apply to all the LINES; for example, console port and VTY.
NOTE: The authentication method list must be in the same order as the authorization method list. For example, if you
configure the authentication method list in the following order—TACACS+, local—Dell Networking recommends
configuring the authorization method list in the same order—TACACS+, local.
4 Specify the authorization method list—RADIUS, TACACS+, or Local. At a minimum, you must specify local authorization.
For consistency, the best practice is to define the same authorization method list across all lines, in the same order of comparison; for
example, VTY and console port.
You could also use the default authorization method list to apply to all the LINES—console port, VTY.
If you do not, the following error displays when you attempt to enable role-based only AAA authorization:
% Error: Exec authorization must be applied to more than one line to be useful, e.g. console
and vty lines. Could use default authorization method list as alternative.
5 Verify the configuration is applied to the console or VTY line.
Dell (conf)#do show running-config line
!
line console 0
login authentication test
authorization exec test
exec-timeout 0 0
line vty 0
login authentication test
authorization exec test
line vty 1
login authentication test
authorization exec test
To enable role-based only AAA authorization, enter the following command in Configuration mode:
Dell(conf)#aaa authorization role-only
System-Defined RBAC User Roles
By default, the Dell Networking OS provides 4 system defined user roles. You can create up to 8 additional user roles.
NOTE: You cannot delete any system defined roles.
The system defined user roles are as follows:
• Network Operator (netoperator) - This user role has no privilege to modify any configuration on the switch. You can access Exec mode
(monitoring) to view the current configuration and status information.
• Network Administrator (netadmin): This user role can configure, display, and debug the network operations on the switch. You can
access all of the commands that are available from the network operator user role. This role does not have access to the commands
that are available to the system security administrator for cryptography operations, AAA, or the commands reserved solely for the
system administrator.
Security 783