Brocade Communications Systems 6650 Entering privileged Exec mode after a Telnet or SSH login

		TACACS and TACACS+ security
TABLE 4	Authentication method values (Continued)
Method parameter		Description
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 “Local user
		account configuration” on page 21.
tacacs		Authenticate using the database on a TACACS server. You also must identify the server to the
		device using the tacacs-servercommand.
tacacs+		Authenticate using the database on a TACACS+ server. You also must identify the server to
		the device using the tacacs-servercommand.
radius		Authenticate using the database on a RADIUS server. You also must identify the server to the
		device using the radius-servercommand.
none		Do not use any authentication method. The device automatically permits access.

NOTE

For examples of how to define authentication-method lists for types of authentication other than TACACS/TACACS+, refer to “Authentication-method lists” on page 58.

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.

Brocade(config)# aaa authentication login privilege-mode

Syntax: aaa authentication login privilege-mode

The user 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 Brocade 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 Brocade device 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.

Brocade(config)# aaa authentication enable implicit-user

Syntax: [no] aaa authentication enable implicit-user

Telnet and SSH prompts when the TACACS+ server is unavailable

When TACACS+ is the first method in the authentication method list, the device displays the login prompt received from the TACACS+ server. If a user attempts to login through Telnet or SSH, but none of the configured TACACS+ servers are available, the following takes place:

Brocade ICX 6650 Security Configuration Guide	35
53-1002601-01