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Did you mean:. All Community This category This board. Tacacs authentication for console access on the switch. Labels: AAA. Tags: ios. Hello Minkumar I am having an issue with accessing a new Cisco console.
This data can then be analyzed for network management, client billing, or auditing. Enter this command multiple times to create a list of preferred hosts. The software searches for hosts in the order in which you specify them. Optional Defines the AAA server-group with a group name, and enters server group configuration mode. To configure AAA authentication, you define a named list of authentication methods and then apply that list to various ports.
To secure the for HTTP access by using AAA methods, you must configure the with the ip http authentication aaa global configuration command. Enters global configuration mode. Creates 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 method The additional methods of authentication are used only if the previous method returns an error, not if it fails. Before you can use this authentication method, you must define an enable password by using the enable password global configuration command. Before you can use this authentication method, you must define a line password.
Use the password password line configuration command. You must enter username information in the database. Use the username password global configuration command. You must enter username information in the database by using the username name password global configuration command. Enters line configuration mode, and configures the lines to which you want to apply the authentication list.
Applies 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 login command. Verifies your entries. Optional Saves your entries in the configuration file. Authorization is bypassed for authenticated users who log in through the CLI even if authorization has been configured. The exec keyword might return user profile information such as autocommand information.
The server group lists the IP addresses of the selected server hosts. Server groups can include multiple host entries as long as each entry has a unique IP address. If two different host entries in the server group are configured for the same service--for example, accounting--the second host entry configured acts as fail-over backup to the first one.
Using this example, if the first host entry fails to provide accounting services, the network access server will try the second host entry for accounting services.
To define a server host with a server group name, enter the following commands starting in global configuration mode. The listed server must exist in global configuration mode:. Router config tacacs-server host name [ single-connection ] [ port integer ] [ timeout integer ] [ key string ].
Router config-sg server ip-address [ auth-port port-number ] [ acct-port port-number ]. Defines the AAA server-group with a group name.
This command puts the router in server group subconfiguration mode. Use the auth-port port-number option to configure a specific UDP port solely for authentication. Use the acct-port port-number option to configure a specific UDP port solely for accounting.
Each server in the group must be defined previously using the tacacs-server host command. The DNIS number identifies the number that was called to reach you. For example, suppose you want to share the same phone number with several customers, but you want to know which customer is calling before you pick up the phone.
You can customize how you answer the phone because DNIS allows you to know which customer is calling when you answer. Additionally, using server groups you can specify the same server group for AAA services or a separate server group for each AAA service.
Cisco IOS XE software provides the flexibility to implement authentication and accounting services in several ways:. Globally--AAA services are defined using global configuration access list commands and applied in general to all interfaces on a specific network access server.
Per interface--AAA services are defined using interface configuration commands and applied specifically to the interface being configured on a specific network access server. Because AAA configuration methods can be configured simultaneously, Cisco has established an order of precedence to determine which server or groups of servers provide AAA services.
In some situations, users might be prevented from starting a session on the console or terminal connection until after the system reloads, which can take more than 3 minutes. To establish a console or Telnet session with the router if the AAA server is unreachable when the router reloads, use the no aaa accounting system guarantee-first command. To establishing a session with a router if the AAA server is unreachable, use the aaa accounting system guarantee-first command.
Download this chapter. Finding Feature Information Your software release may not support all the features documented in this module. Set an authentication key. Enable AAA. Create a login authentication method list.
Apply the list to the terminal lines. Create an authorization and accounting method list. Authorization must be enabled on the switch to be used. To use any of the AAA commands listed in this section or elsewhere, you must first enable AAA with the aaa new-model command.
The method list defines the types of authentication to be performed and the sequence in which they are performed; it must be applied to a specific port before any of the defined 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 ports except those that have a named method list explicitly defined. A defined method list overrides the default method list. Method List Description. Figure 1. If the switch is configured to require authorization, authorization begins at this time. ERROR—An error occurred at some time during authentication with the daemon or in the network connection between the daemon and the switch.
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