Hello,
Please find below the solution for your issue
MAC address filtering on wired networks
1. Click the 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 the 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.

2. Click Apply.
The MAC address lists of the PCs in the network are saved on the ONT. Configuring the MAC filter rules enables the PCs that abide to the rules to access the Internet service or disables the PCs that do not abide to the rules to access the Internet service.
A PC may have more than one IP address, but a unique MAC address. Therefore, configuring the MAC filter rules effectively controls the Internet service access rights of the PCs in a LAN.
The parameters related to the MAC address filter:
Parameter
| Description
|
Enable MAC filter
| Indicates whether to enable the MAC address filter function.
|
| Filter mode | Indicates the MAC address filter rule of the blacklist or whitelist. The filter mode is global config mode.Thus, the blacklist and whitelist mode cannot be used at the same time.
|
Source MAC address
| Indicates the source MAC address in the MAC address filter rule.
|
MAC address filtering on wireless networks
1. Click the Security tab, and choose WLAN MAC Filter Configuration from the navigation tree on the left. On the right pane, select Enable WAN MAC filter, set the filter mode and click New. In the dialog box that is displayed, configure the SSID-based MAC address filter rule.

2. Click Apply.
The parameters for wireless network MAC filtering:
Parameter
| Description
|
Enable WLAN MAC filter
| Enables or disables the WLAN MAC filter function.
|
Filter mode
| Indicates the MAC filter mode. It can be set to Blacklist or Whitelist. The blacklist or whitelist mode is a global configuration. The two modes cannot be used at the same time.
|
SSID index
| Indicates the SSID index of the WLAN for which MAC address filtering is configured.
|
Source MAC address
| Indicates the source MAC address in the MAC filter rules.
|
More detail
https://support.huawei.com/carriersearch/#currentPage=0&origin=headSearch&pageSize=10&resLang=en&searchModelType=11&searchString=HG630 V2&searchType=ST-ALL&sortType=Relevance
Thanks