Is it possible to make nginx not respond to a network request?

Question

Nginx

Within one machine, nginx is running, which is responsible for many domains. In addition to configs for each domain, there is also a "default". It says "deny all". Thus, if someone knocks through the browser simply by IP, then he sees 403.
Is it possible to make it so that instead of 403 there is no response at all, so that the HTTP request goes nowhere?

Answer 1

return 444;

Answer 2

serverfault.com/questions/499495/how-to-block-floo...