Traefik forward to another external server

I have traefik up using docker and I am able to connect to some subdomains. All is running on a raspberry. Now I want to add and that is a nas connected to my network. What do I have to define to forward the to For config I use trafik.toml and traefik-dynamic.toml.

web-->fritzbox-->raspberry-->traefik entrypoint:websecure -->????-->

Many thanks Frank

Hi @Frank

The easiest way to do this is to add a file provider and define the router and service in that file.