WLAN PORTAL AUTHENTICATION

Hi csk99,
For the portal authentication principles, you can refer to https://support.huawei.com/hedex/hdx.do?docid=EDOC1100096146&id=EN-US_TASK_0176368385&lang=en

Local authentication and authorization feature fast processing and low operation cost. However, the amount of local authentication and authorization information that can be stored is subject to the device hardware capacity. For more information, refer to https://support.huawei.com/hedex/hdx.do?docid=EDOC1100096146&id=EN-US_TASK_0176366368&lang=en

RADIUS is often used to implement authentication, authorization, and accounting (AAA). It uses the client/server model and prevents unauthorized access to networks that require high security and control of remote user access. For more information, refer to https://support.huawei.com/hedex/hdx.do?docid=EDOC1100096146&id=EN-US_TASK_0176366380&lang=en

Local authentication is used only for authentication and authorization. RADIUS authentication is used for authentication, authorization, and accounting.

I hope it helps!