Global catch-all server block for Nginx

nginx.conf

html {
	[...]

	##
	# Virtual Host Configs
	##

	# Default catch-all server block
	server {
		listen *:80 default_server;
		listen *:443 default_server;
		server_name _;

		ssl_certificate     /etc/nginx/ssl/example.com/ssl-bundle.crt;
		ssl_certificate_key /etc/nginx/ssl/example.com/example.com.key;
		
		return 404;
	}

	include /etc/nginx/conf.d/*.conf;
	include /etc/nginx/sites-enabled/*;
}