In this tutorial I will show you how to setup a Nginx Reverse Proxy in OpenMediaVault for several popular applications: SABnzbd, Radarr, Sonarr and Tranmission.
If you want to access your OpenMediaVault NAS from the web (WAN), using a Reverse Proxy is the safest method. You only have to open up one port on your modem/router, instead seperate ports for each application. After following this tutorial Nginx will parse the URI (e.g. https://nas.yourdomain.com/sabnzbd) and forward that request to the corresponding port inside your local network (LAN).