nginx reverse proxy proxy_pass weirdness

[deeztek]

Here's an example config that I use:

server {
        server_name         domain.tld www.domain.tld;
        add_header Strict-Transport-Security "max-age=31536000; preload";
        keepalive_timeout   70;
        #LOGS CONFIG
        access_log /usr/local/nginx/logs/domain.tld/domain.tld_access.log;
        error_log /usr/local/nginx/logs/domain.tld/domain.tld_error.log
warn;
        #SSL CONFIG
        ssl_certificate     /etc/nginx/ssl/domain.tld.pem;
        ssl_certificate_key /etc/nginx/ssl/domain.tld.key;
        ssl_protocols       TLSv1.2 TLSv1.3;
        ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';
        ssl_dhparam /usr/local/nginx/ssl/dhparam.pem;
        ssl_prefer_server_ciphers on;
        ssl_session_cache shared:SSL:10m;
        proxy_max_temp_file_size 5120m;
        client_max_body_size 5120m;
        #set_real_ip_from 192.168.xx.xx/24;
        #real_ip_header X-Forwarded-For;
        #real_ip_recursive on;
        #LISTEN CONFIG
        include /usr/local/nginx/conf/listen/domain.tld/*.conf;
        #MODSECURITY CONFIG
        modsecurity on;
        modsecurity_rules_file
/usr/local/nginx/conf/domain.tld_modsecurity.conf;

location / {

  #Set Real IP Headers
  proxy_set_header X-Real-IP  $remote_addr;
  proxy_set_header X-Forwarded-For $remote_addr;
  proxy_set_header Host $host;

  #proxy_set_header X-Real-IP $remote_addr;
  #proxy_set_header Host $host;
  #proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_pass https://webserver02.domain.tld:443;
}

}

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,286492,286494#msg-286494