Automatic Gluetun Port Forwarding
qBittorrent can be configured to automatically utilize the VPN forward port when used with Gluetun for ProtonVPN and PIA, all other VPN providers should be configured manually as the port does not change.
To enable automatic port forwarding check the box Gluetun Port Forwarding
in the qBittorrent App Configuration section.
You are required to provide the qBittorrent WebUI username and password. Because of this requirement you CANNOT enable this feature until you have completed the installation of qBittorrent and configured the WebUI username and password in the qBittorrent settings first.