Internet Kill Switch
Internet Kill Switch feature is built-in from firmware version 3.100, please upgrade.
Note: With this option enabled, you need to set up the router as a VPN client for any of the router's clients to be able to connect to the internet.
After this setting is on, the router needs to run the VPN client all the time, if the VPN client is not running, the clients are Not Allowed to access the Internet.
Setup
1) Choose "Internet Kill Switch".
Choose "Internet Kill Switch" from "VPN".
2) Enable "Internet Kill Switch".
Switch on the "Enable" button in the middle of the page.
3) Apply "Internet Kill Switch".
Click "Apply" in the upper right corner.
4) Wait for the "Success" notice
The “SUCCESS!” Message will pop-up if the Internet Kill Switch turn on correctly.