📖 Original Reference: Originally published with complete step-by-step storage configurations at alexmaina.dev/qnap-docker-reverse-proxy .

When trying to deploy a Reverse Proxy (like Nginx Proxy Manager , Traefik , or Caddy ) inside QNAP's Container Station , Docker will fail with:

Error response from daemon: driver failed programming external connectivity on endpoint: bind: address already in use

Enter fullscreen mode

Exit fullscreen mode

This happens because QNAP's operating system ( QTS or QuTS hero ) occupies port 80 and port 443 by default for its administrative interface and built-in web server.

Here is how to liberate both ports cleanly and set up a centralized reverse proxy without breaking access to your NAS.

Step 1: Move QTS Admin System Ports

Log into your QTS web dashboard.

Go to Control Panel → System → General Settings .

Under the System Administration section:

System port (HTTP): Change from 8080 (or 80 ) to 8088 .

Enable secure connection (HTTPS): Change from 443 (or 4433 ) to…