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Dell EMC Configuration Guide for the S4048T–ON System 9.14.2.4

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Configuring Login Authentication for Terminal Lines

You can use any combination of up to six authentication methods to authenticate a user on a terminal line.

A combination of authentication methods is called a method list. If the user fails the first authentication method, Dell EMC Networking OS prompts the next method until all methods are exhausted, at which point the connection is terminated. The available authentication methods are:
enable
Prompt for the enable password.
line
Prompt for the password you assigned to the terminal line. Configure a password for the terminal line to which you assign a method list that contains the line authentication method. Configure a password using the password command from LINE mode.
local
Prompt for the system username and password.
none
Do not authenticate the user.
radius
Prompt for a username and password and use a RADIUS server to authenticate.
tacacs+
Prompt for a username and password and use a TACACS+ server to authenticate.
  1. Configure an authentication method list. You may use a mnemonic name or use the keyword default. The default authentication method for terminal lines is local and the default method list is empty.
    CONFIGURATION mode
    aaa authentication login {method-list-name | default} [method-1] [method-2] [method-3] [method-4] [method-5] [method-6]
  2. Apply the method list from Step 1 to a terminal line.
    CONFIGURATION mode
    login authentication {method-list-name | default}
  3. If you used the line authentication method in the method list you applied to the terminal line, configure a password for the terminal line.
    LINE mode
    password

Example of Terminal Line Authentication

In the following example, VTY lines 0-2 use a single authentication method, line.

DellEMC(conf)#aaa authentication login myvtymethodlist line
DellEMC(conf)#line vty 0 2
DellEMC(config-line-vty)#login authentication myvtymethodlist
DellEMC(config-line-vty)#password myvtypassword
DellEMC(config-line-vty)#show config
line vty 0
  password myvtypassword
login authentication myvtymethodlist
line vty 1
  password myvtypassword
login authentication myvtymethodlist
line vty 2
  password myvtypassword
login authentication myvtymethodlist
DellEMC(config-line-vty)#

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