VPN killswitch and UncomplicatedFireWall (ufw)
You can set-up a VPN killswitch, which is a simple way to ensure that if your VPN connection is dropped, regardless of the reason, the Internet connections are not allowed (and your real IP will not be exposed). And this can be done easily using ufw on any Debian-based distro. Start by installing ufw if it’s not already installed on your system: 1 $ sudo apt install ufw Configure ufw to deny all incoming and outgoing connections:
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