Hello. I'm attempting to do a header verification within NGINX and I can't seem to find a good place to start. I'm running NGINX 1.14.0 on Ubuntu 18.04 with default settings. My flow begins from inside our private network: MyApp -> Proxy(Check Header) -> Outside Service. In the case that the header doesn't match the definition, it should kick back a 403 to 'MyApp'. I feel likby jcmanous - How to...