Normally when someone know your WiFi password, they will use your internet. If you want to terminate them, what will you do?
It is not difficult for blocking someone cannot access your WiFi, you follow to below way, they won’t use your WiFi forever.
The first you need login Admin of WiFi with your password default (users name: admin, password: admin) or Password and username which put on the router.
After that find Filtering or WLAN Filtering for Model HG531 V1 only and click on Bacis-WLAN-WLAN filtering and for other router model you can find in Filtering or Blacklist which name in similar menu.
And then inter mac address which you want to terminate into source mac address: (for another Router Model has IP address or name) and then clink on bottom submit and restart your router.
After you followed above way, they will not access your WiFi forever. If you want know who is use your internet please click this link here How to scan multi devices on router and block someone can access internet and follow it so you will know information of WiFi user.
We hope that above way will help you to terminate who want to use your WiFi and it can help to manage your internet.