Keep immich access to local only

I’m a newbie to CasaOs and installed Immich through the CasaOs Store and haven’t made any custom settings. As a photographer I plan to keep its gallery access only through my local lan/wifi, no remote access through internet, etc. I don’t know if immich access is local by default, or what changes I have to make to be sur it wont be remotely accessible. How I can I make sure the files will be accessible only locally?