Domain point to interal IP if accessed from LAN

[teh0wner]

I'm not sure whether this is even possible, but here's my question.

Is there a way I can make the domain I use for my unRAID server, if accessed internally, to point to an IP:PORT instead? I'm using letsencrypt and nginx to achieve a reverse proxy, where sonarr.mydomain.com, for example, works. However, if accessing within my LAN, I want to be able to bypass authentication set-up by nginx, and go directly into sonarr. My idea was to somehow, if that URL is accessed from my LAN, then make it points to SONARR-IP:PORT directly.

I hope this makes sense.

Thanks

[cinereus]

Yes that should be possible with a reverse proxy.

[teh0wner]

On 5/4/2020 at 11:55 AM, cinereus said:

Yes that should be possible with a reverse proxy.

Mind pointing my in the right direction? Not quite sure how the conf should look like. I've got everything up and running with linuxserver letsencrypt.