How to configure open server to display real IP addresses?

Question

open server

Good morning w. connoisseurs. Question about setting up open servera or CMS Drupal.
I have a site that runs on an Open server, all requests to it go through the ddos ​​guard service, respectively, in the site admin panel, I see only the IP of the ddos ​​guard service. After talking with those ddos guard support, I was told that in order to display the real IP address of the client who enters the site, it is necessary to configure the decoding of the X-Real-IP / X-Forwarded-For headers. If possible, tell me how to do this and whether I applied on the topic at all. Thank you very much in advance.
PS Open Server installed on Windows server 2008 R2.
CMS Drupal

Answer 1

In PHP headers are added to $_SERVER

Answer 2

Should help Need to set header name in drupal