Users Guide

Congure Login Authentication for Terminal Lines
You can assign up to ve authentication methods to a method list. The system evaluates the methods in the order in which you enter them
in each list.
If the rst method list does not respond or returns an error, the system applies the next method list until the user either passes or fails the
authentication. If the user fails a method list, the system does not apply the next method list.
Conguring AAA Authentication Login Methods
To congure an authentication method and method list, use the following commands.
Dell Networking OS Behavior: If you use a method list on the console port in which RADIUS or TACACS is the last authentication method,
and the server is not reachable, Dell Networking OS allows access even though the username and password credentials cannot be veried.
Only the console port behaves this way, and does so to ensure that users are not locked out of the system if network-wide issue prevents
access to these servers.
1 Dene an authentication method-list (method-list-name) or specify the default.
CONFIGURATION mode
aaa authentication login {method-list-name | default} method1 [... method4]
The default method-list is applied to all terminal lines.
Possible methods are:
• enable: use the password you dened using the enable secret, enable password, or enable sha256-password
command in CONFIGURATION mode. In general, the enable secret command overrules the enable password command.
If you congure the enable sha256-password command, it overrules both the enable secret and enable password
commands.
• line: use the password you dened using the password command in LINE mode.
• local: use the username/password database dened in the local conguration.
• none: no authentication.
• radius: use the RADIUS servers congured with the radius-server host command.
• tacacs+: use the TACACS+ servers congured with the tacacs-server host command.
2 Enter LINE mode.
CONFIGURATION mode
line {aux 0 | console 0 | vty number [... end-number]}
3 Assign a method-list-name or the default list to the terminal line.
LINE mode
login authentication {method-list-name | default}
To view the conguration, use the show config command in LINE mode or the show running-config in EXEC Privilege mode.
NOTE
: Dell Networking recommends using the none method only as a backup. This method does not authenticate users. The
none and enable methods do not work with secure shell (SSH).
You can create multiple method lists and assign them to dierent terminal lines.
Security
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