TP-Link T2500G-10MPS T2500G-10MPSUN V1 Configuration Guide - Page 639
AAA Configuration
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Configuring Network Security AAA Configuration 8 AAA Configuration In the AAA feature, the authentication can be processed locally on the switch or centrally on the RADIUS/TACACS+ server(s). To ensure the stability of the authentication system, you can configure multiple servers and authentication methods at the same time. This chapter introduces how to configure this kind of comprehensive authentication in AAA. To complete the configuration, follow these steps: 1) Globally enable AAA. 2) Add the servers. 3) Configure the server groups. 4) Configure the method list. 5) Configure the AAA application list. 6) Configure the login account and the Enable password. Configuration Guidelines The basic concepts and working mechanism of AAA are as follows: Server Group Multiple servers running the same protocol can be added to a server group, and the servers in the group will authenticate the users in the order they are added. The server that is first added to the group has the highest priority, and is responsible for authentication under normal circumstances. If the first one breaks down or doesn't respond to the authentication request for some reason, the second sever will start working for authentication, and so on. Method List A server group is regarded as a method, and the local authentication is another method. Several methods can be configured to form a method list. The switch uses the first method in the method list to authenticate the user, and if that method fails to respond, the switch selects the next method. This process continues until the user has a successful communication with a method or until all defined methods are exhausted. If the authentication succeeds or the secure server or the local switch denies the user's access, the authentication process stops and no other methods are attempted. Two types of method list are provided: Login method list for users of all types to access the switch, and Enable method list for guests to get administrative privileges. Configuration Guide 612
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