Based on the search results, VPN Watcher refers to a small utility tool (commonly found on GitHub) designed to enhance user privacy by ensuring specific applications only run when a VPN connection is active.
It acts as a security measure, sometimes referred to as a “kill switch” for specific applications, to prevent data leaks if a VPN disconnects unexpectedly. Key Features and Functionality
Monitors VPN Interfaces: The tool watches your active network connections to detect when the VPN interface goes down.
Closes Applications: When a disconnection is detected, it automatically closes pre-configured applications (e.g., browsers, torrent clients).
Simple Setup: Users select their VPN interface, choose which apps to monitor, and let it run in the background.
Torrent Protection: It includes specific actions for handling torrent clients upon disconnection.
There are variations of this tool, such as the one maintained by tizmagik/vpn-watcher or halfmonty/VPNWatcher. Why Use a VPN Watcher?
Prevents Accidental Leaks: If your VPN drops, your internet traffic could revert to your ISP-provided IP address. VPN Watcher kills apps to stop this.
Privacy Assurance: Ideal for users who want to guarantee that sensitive activity (like downloading or P2P sharing) never occurs without encryption.
If you are concerned about your VPN suddenly disconnecting, using a tool like this ensures your traffic doesn’t leak. If you want to know how to install it, I can help you find that information. tizmagik/vpn-watcher – GitHub