(Solution safe LAN start configuration guide this scheme is suitable for the management of small-scale networks. It does not need professional network managers. It can use a graphical and simple deployment method, and users do not need a client. The network can include access layer, convergence layer switch + exit router or only access and convergence switch. It mainly completes the following functions: 1) set the guard to prevent non Legal access 2) set up an identity authentication center to verify identity 3) identify and check each network access behavior 4) grant corresponding permissions to legitimate users, in which the management device is used to manage the entire network, manage member devices, deploy radius services, configure authenticated users and authorization information; Member devices are used to deploy port deployment.)