How to configure MAC address filtering to prevent unauthorized network access on Huawei ONT?

Question: 
How to configure MAC address filtering to prevent unauthorized network access on Huawei ONT(HG8010H, HG8010Z, HG8012H, HG8040, HG8045A, HG8240, HG8245, HG8247H)?

Answer:
By setting MAC address filtering, you can allow only your own device to access the network (whitelist), or do not allow unauthorized devices to access the network (blacklist), effectively preventing unauthorized network access. Huawei ONTs support MAC address filtering for wired and wireless networks. The following describes the two scenarios respectively.

MAC address filtering on wired networks:
(1) Click Advanced Configuration > Security Configuration tab, and choose MAC Address Filtering in the navigation tree on the left. In the pane on the right, after enabling MAC filter and selecting the filter mode, click New. On the dialog box that is displayed, configure the MAC filter rule for the PC to access the Internet.