Cisco Systems OL-29225-01

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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points

OL-30644-01

Chapter5 Administrating the Access Point

Controlling Access Point Access with TACACS+

authentication methods are performed. The only exception is the default method list (which, by

coincidence, is named default). The default method list is automatically applied to all interfaces except

those that have a named method list explicitly defined. A defined method list overrides the default

method list.

A method list describes the sequence and authentication methods to be queried to authenticate a user.

You can designate one or more security protocols to be used for authentication, thus ensuring a backup

system for authentication in case the initial method fails. The software uses the first method listed to

authenticate users; if that method fails, the software selects the next authentication method in the method

list. This process continues until there is successful communication with a listed authentication method

or until all defined methods are exhausted. If authentication fails at any point in this cycle—meaning that

the security server or local username database responds by denying the user access—the authentication

process stops, and no other authentication methods are attempted.

Beginning in privileged EXEC mode, follow these steps to configure login authentication. This

procedure is required.

Command Purpose

Step1 configure terminal Enter global configuration mode.

Step2 aaa new-model Enable AAA.

Step3 aaa authentication login {default |

list-name} method1 [method2...]

Create a login authentication method list.

•To create a default list that is used when a named list is not specified

in the login authentication command, use the default keyword

followed by the methods that are to be used in default situations. The

default method list is automatically applied to all interfaces.

•For list-name, specify a character string to name the list you are

creating.

•For method1..., specify the actual method the authentication

algorithm tries. The additional methods of authentication are used

only if the previous method returns an error, not if it fails.

Select one of these methods:

•local—Use the local username database for authentication. You must

enter username information into the database. Use the username

password global configuration command.

•tacacs+—Use TACACS+ authentication. You must configure the

TACACS+ server before you can use this authentication method.

Step4 line [console | tty | vty] line-number

[ending-line-number]

Enter line configuration mode, and configure the lines to which you want

to apply the authentication list.

Step5 login authentication {default |

list-name}

Apply the authentication list to a line or set of lines.

•If you specify default, use the default list created with the aaa

authentication login command.

•For list-name, specify the list created with the aaa authentication

Step6 end Return to privileged EXEC mode.

Step7 show running-config Verify your entries.

Step8 copy running-config startup-config (Optional) Save your entries in the configuration file.