Cisco 3560G 48TS Software Configuration Guide - Page 169

Chapter 8 Configuring Switch-Based Authentication Controlling Switch Access with TACACS+ authenticate users; if that method fails to respond, 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: Step 1 Step 2 Step 3 Command configure terminal aaa new-model aaa authentication login {default | list-name} method1 [method2...] Step 4 line [console | tty | vty] line-number [ending-line-number] Purpose Enter global configuration mode. Enable AAA. 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 ports. • 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: • enable-Use the enable password for authentication. Before you can use this authentication method, you must define an enable password by using the enable password global configuration command. • group tacacs+-Uses TACACS+ authentication. Before you can use this authentication method, you must configure the TACACS+ server. For more information, see the "Identifying the TACACS+ Server Host and Setting the Authentication Key" section on page 8-13. • line-Use the line password for authentication. Before you can use this authentication method, you must define a line password. Use the password password line configuration command. • local-Use the local username database for authentication. You must enter username information in the database. Use the username password global configuration command. • local-case-Use a case-sensitive local username database for authentication. You must enter username information in the database by using the username name password global configuration command. • none-Do not use any authentication for login. Enter line configuration mode, and configure the lines to which you want to apply the authentication list. 78-16156-01 Catalyst 3560 Switch Software Configuration Guide 8-15