| Feature | App-level (VPN client) | System-level (firewall) | | --- | --- | --- | | How it works | VPN app blocks its own tunnel | Firewall rules block all non-VPN traffic | | Reliability | Good, but can fail if app crashes | Excellent, OS-level enforcement | | Torrent safety | Usually sufficient | Best-in-class | | Example | NordVPN, ExpressVPN | WireGuard + iptables, pfSense |
You’ve just found the perfect torrent. The download speed is blazing… but your VPN just disconnected without you noticing. kill switch torrent
Suddenly, your real IP address is exposed to everyone in the swarm—including your ISP and copyright trolls. | Feature | App-level (VPN client) | System-level