Technical data

ServerIron ADX Administration Guide 115
53-1002434-01
Configuring TACACS or TACACS+ security
2
NOTE
For examples of how to define authentication-method lists for types of authentication other than
TACACS or TACACS+, refer to “Configuring authentication-method lists” on page 136.
Entering privileged EXEC mode after a Telnet or SSH login
By default, a user enters User EXEC mode after a successful login through Telnet or SSH.
Optionally, you can configure the device so that a user enters Privileged EXEC mode after a Telnet
or SSH login. To do this, use the following command.
ServerIronADX(config)# aaa authentication login privilege-mode
Syntax: aaa authentication login privilege-mode
The user’s privilege level is based on the privilege level granted during login.
Configuring enable authentication to prompt for password only
If Enable authentication is configured on the device, when a user attempts to gain Super User
access to the Privileged EXEC and CONFIG levels of the CLI, by default he or she is prompted for a
username and password. You can configure the ServerIron device to prompt only for a password.
The device uses the username entered at login, if one is available. If no username was entered at
login, the device prompts for both username and password.
To configure the ServerIron to prompt only for a password when a user attempts to gain Super User
access to the Privileged EXEC and CONFIG levels of the CLI.
ServerIronADX(config)# aaa authentication enable implicit-user
Syntax: [no] aaa authentication enable implicit-user
TABLE 7 Authentication method values
Method parameter Description
line Authenticate using the password you configured for Telnet access. The
Telnet password is configured using the enable telnet password…
command. Refer to “Setting a Telnet password” on page 100.
enable Authenticate using the password you configured for the Super User
privilege level. This password is configured using the enable
super-user-password… command. Refer to “Setting passwords for
management privilege levels” on page 100.
local Authenticate using a local user name and password you configured on the
device. Local user names and passwords are configured using the
username… command. Refer to “Configuring a local user account” on
page 105.
tacacs Authenticate using the database on a TACACS server. You also must
identify the server to the device using the tacacs-server command.
tacacs+ Authenticate using the database on a TACACS+ server. You also must
identify the server to the device using the tacacs-server command.
radius Authenticate using the database on a RADIUS server. You also must
identify the server to the device using the radius-server command.
none Do not use any authentication method. The device automatically permits
access.