How to pass user IP to Nginx proxy?

Question

Nginx

There is a proxy on Nginx, config

server {
    listen 80 default; 
    server_name _; 
    server_tokens off;
location / {
    proxy_pass http://$http_host$request_uri;
    proxy_set_header Host $http_host;
    resolver 8.8.8.8;
  proxy_set_header Accept-Encoding "";
  proxy_hide_header Vary;
  gzip on;
  gzip_vary on;
  gzip_proxied any;
  gzip_http_version 1.0;
}
}

But when I go through it to the same site 2ip.ru, I see the IP of the server where the proxy is, and not my own. Please help. Thank you.

Answer 1

You will not be able to replace the proxy address with your own in any case.
You can send the real IP with an additional header to the server:

proxy_set_header        X-Real-IP       $remote_addr;
proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;

Answer 2

In proxy \ NAT mode, this cannot be done. Routing only, i.e. not nginx.

Answer 3

You need to pass the client address in the X-Real-IP header.
"By default" foreign web servers only accept this header from the localhost.
So you cannot organize such a proxy on other sites.