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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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Configuring AAA Authentication Login Methods

To configure 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 verified. 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. Define 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 defined using the enable sha256-password, enable secret , or enable password command in CONFIGURATION mode. In general, the enable secret command overrules the enable password command. If you configure the enable sha256-password command, it overrules both the enable secret and enable password commands.
    • line: use the password you defined using the password command in LINE mode.
    • local: use the username/password database defined in the local configuration.
    • none: no authentication.
    • radius: use the RADIUS servers configured with the radius-server host command.
    • tacacs+: use the TACACS+ servers configured 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 configuration, 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 different terminal lines.


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