Ah, well, that's unfortunately not possible to achieve with Vanguard.

Regards,
Milos

My problem is, I have an application which needs that file on a different server ...

Hey Torsten,

That file should not be accessed via HTTP at all. You need to include it inside the PHP file, not access it from the browser. 

In general, you can include it in any PHP file you have, it doesn't matter where it is located on the server.

Regards,
Milos

Hey there, is it possible load extra/auth.php from external via url? My domain points to /public folder

Best regards