Hi!
The HG8346 can block the http site. In the case of a HTTPS site (such as *******), it cannot block it.
Click the Security tab and then choose URL Filter Configuration from the navigation tree. In the pane on the right, after enabling the URL filter and selecting the filter mode, click New. On the dialog box that is displayed, configure the URL filter rule for the PC to access the Internet.
If you know the IP address of the site, you can set the IP Filter to block the site
In the navigation tree on the left, choose Security > IP Filter Configuration. In the pane on the right, enable the IP address filter function. After selecting the filter mode, click New. Then, in the dialog box that is displayed, configure the rule for filtering the IP addresses from the WAN interface to the LAN port