Brocade TurboIron 24X Series Configuration Guide - Manual (Page 150)

116 Brocade TurboIron 24X Series Configuration Guide
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Configuring authentication-method lists
• Local user accounts configured on the device
• Database on a TACACS or TACACS+ server
• Database on a RADIUS server
• No authentication
NOTE
The TACACS/TACACS+, RADIUS, and Telnet login password authentication methods are not
supported for SNMP access.
NOTE
To authenticate Telnet access to the CLI, you also must enable the authentication by entering the
enable telnet authentication command at the global CONFIG level of the CLI.
NOTE
You do not need an authentication-method list to secure access based on ACLs or a list of IP
addresses. Refer to
“Using ACLs to restrict remote access” on page 65 or “Restricting remote access
to the device to specific IP addresses” on page 68.
In an authentication-method list for a particular access method, you can specify up to seven
authentication methods. If the first authentication method is successful, the software grants
access and stops the authentication process. If the access is rejected by the first authentication
method, the software denies access and stops checking.
However, if an error occurs with an authentication method, the software tries the next method on
the list, and so on. For example, if the first authentication method is the RADIUS server, but the link
to the server is down, the software will try the next authentication method in the list.
NOTE
If an authentication method is working properly and the password (and user name, if applicable) is
not known to that method, this is not an error. The authentication attempt stops, and the user is
denied access.
The software will continue this process until either the authentication method is passed or the
software reaches the end of the method list. If the Super User level password is not rejected after
all the access methods in the list have been tried, access is granted.
Configuration considerations for authentication- method lists
• For CLI access, you must configure authentication-method lists if you want the device to
authenticate access using local user accounts or a RADIUS server. Otherwise, the device will
authenticate using only the locally based password for the Super User privilege level.
• For devices that can be managed using Brocade Network Advisor, the default authentication
method (if no authentication-method list is configured for SNMP) is the CLI Super User level
password. If no Super User level password is configured, then access through Brocade
Network Advisor is not authenticated.