this post was submitted on 30 Jun 2025
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Always make sure that QBT uses your VPN's network interface. I got some DMCA emails despite split-tunneling a VPN recently, and I realized it was bound to all interfaces by default - that's no good.
Better to just configure a firewall properly so that no packets can go outside of the vpn tunnel.
How is that better? If you configure your firewall rules incorrectly, this protects you against that. This ensures you have no connection if your VPN isn't on/isn't working.
Thats what the firewall rules do too, don't allow internet connection if there's no vpn connection.
Firewall is a system-wide solution that always works, while qbt config relies heavily on the application implementing interface binding properly. Which it doesn't fully btw.