| 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 |
🔒 Even if your VPN fails, your torrent client just stalls. kill switch torrent
"Kill switch torrent" isn’t just a setting—it’s a promise that your real identity never touches the swarm. | Feature | App-level (VPN client) | System-level
A significant finding involves the handling of DNS requests. Some kill switches successfully block data transfer traffic but fail to block DNS resolution requests. If a torrent client attempts to resolve a tracker domain name during a VPN dropout, the ISP’s DNS server logs the request, creating a partial privacy compromise. Some kill switches successfully block data transfer traffic
This is the most common type. Managed by your VPN software, it shuts down for your entire computer if the VPN tunnel collapses. Pros: Comprehensive; protects all apps.