Analysis on the concept of AAA and the configuration of Cisco IOS

This article describes in detail how to configure Cisco routers for IOS and the concept of AAA. I believe this article will help you.

In your life, you may use authentication, authorization, and AAA every day in some form. But what does AAA represent in the network security field? In this article, David Davis will tell you what AAA is and how to configure it in Cisco's Internet Operating System.

What is AAA?

In the field of network security, AAA represents an essential requirement. The reason for using AAA is as follows:

· Verification: effective security mode can be used to identify the login name and password before the user logs on to the network. In addition, it supports encryption based on different security levels.

· Authorization: After preliminary verification, the authorization will determine the level of authority that should be granted to the user based on the user's identity. The remote user dialing Authentication System (RADIUS) or the Terminal Access Controller Access Control System (TACACS +) server will select the specific authorization permission based on the value of AV, in order to adapt to user requirements. In the Cisco Internet Operating System, you can set AAA-level authorization conditions through the list or authorization mode.

· Statistics: "A" refers to statistics. It provides a security information collection mechanism for statistics, review and reporting. You can use the statistics function to view the user's activities after authentication and authorization. For example, you can use the statistical function to view User Login and exit information.

Why should every network administrator care about the authentication, authorization, and AAA function?

To pass certification tests such as Cisco Certified Network Engineer CCNA) security, authentication, authorization, and AAA statistics are a key basic knowledge point. To verify, authorize, and count AAA), ensure that only users with the correct identity can log on, they only have the necessary network permissions and can only control resources within their own business scope to ensure network security.

In Cisco's Internet Operating System, how does one configure authentication, authorization, and AAA statistics?

The following describes how to configure the authentication, authorization, and AAA function:

· Enable the authentication, authorization, and AAA statistics function

· Use remote user dialing Authentication System RADIUS) or Terminal Access Controller Access Control System TACACS +) to configure Identity Authentication

· Authorization by list mode

· Use this list in each line/interface

Note that the Cisco network operating system will adopt the next Verification Mode only when the pre-approval mode does not respond. If the security server or user database responds and the user is prohibited from accessing the server, the authentication process and the user will receive a message of rejection. To configure authentication, authorization, and AAA statistics, run the following command in global configuration mode:

Router (config) # aaa new-model

By setting up the Authentication mode, most administrators can start to configure the authentication, authorization, and AAA statistics functions.

The following example shows how to configure the logon authentication mode to enable the password function.

Router (config) # aaa authentication login default enable

If you only want to use the list function on one or more ports. You can create a list and apply it to the port. The following is a Verification Mode applicable to a single port:

Router (config) # aaa authentication ppp default group radius group tacacs + localRouter (config) # aaa authentication ppp apple group radius group tacacs + local noneRouter (config) # interface async 3 Router (config-if) # ppp authentication chap apple authentication, authorization, and AAA statistics are configured in hundreds of different ways, this includes setting up a remote user dial-up Authentication System (RADIUS) or a Terminal Access Controller (Access Control System (TACACS + ). For more information, visit the Cisco Internet Operating System authentication configuration page.

Can I configure a vro in the Active Directory mode of the Windows operating system? The answer is yes. You can read my article "configure a Cisco router in Active Directory mode-router" for more information.

Conclusion

In this article, we understand what is authentication, authorization, and AAA statistics) and what is its usefulness. Now we understand the importance of authentication, authorization, and AAA statistics for network security. Later, we also saw an example of how to configure Cisco's network operating system for authentication, authorization, and AAA statistics.

For more information about authentication, authorization, and AAA statistics, visit the Cisco network operating system "Part 1: authentication, authorization, and AAA statistics)" page.