Hello, friend!
For the ONT, you can log in to the HG8245H web interface, click the Security tab, and then choose MAC Filter Configuration from the navigation tree. In the MAC Filter Configuration window, add a Whitelist and bind the MAC address of the PC to the trustlist.
This mode is different from the port security mode of the switch. The switch disables the physical port, and the ONT can only block packets but cannot closed the port.
Filtering mode:
Whitelist: indicates that the data that meets the filtering rule list is allowed to pass.
The blocklist and trustlist modes are configured globally and cannot be used at the same time.
Thanks!