I run qBittorrent on NAS that is connecting over a VPN to a proxy server running on Raspberry Pi in another country. qBittorrent’s bottom bar indicates I am behind a firewall.

I have opened 6881 port (same as in qBittorrent) in router settings but it still registers as closed on web open port checker. Checking ss -tulpn | grep 6881 shows that there is a tailnet IP listening on this port. Also, ufw accepts both tcp and udp from 6881. But it still registers as closed.

In another post I made user stated that qBittorrent ports are not working over proxy but also suggested to ask here. Just want to confirm if it is so.