server{
        listen 80;
        server_name                     ip_ou_url_d_ecoute;

    location / {
        proxy_pass                            http://ip_cible:port_cible;
        proxy_set_header Host $http_host;
        #$http_proxy_host;

        proxy_set_header X-Real-IP            $remote_addr;
        proxy_set_header X-Forwarded-For      $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto    $scheme;
    }

}