Draytek Vigor2926L User Manual page 680

However, if an IP address is comfirmed to be blocked due to its abnormal behavior, click the
Blocking IP List tab to block it forever. For example, IP address "192.168.1.123" (displayed
on the following web page) will be blocked forever.
Available settings are explained as follows:
Item
Blocking IP
Refresh
664
Description
Type the IP address in this field and click add. It will be added
to the IP List and appear in the right frame.
IP list in the right frame will be blocked by Vigor system
permanatly.
Remove – It is used to remove selected IP address from the
Blocking IP List.
Click this link to refresh current page.
Vigor2926 Series User's Guide