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When using CloudFlare CDN or another proxy in front of your web server, you may see a proxy IP instead of real IP addresses of visitors.

To restore real visitor IPs simply enable the Use Client IP in Header option in the General Settings section of the Configuration page in your LiteSpeed Web Admin Console.

Once enabled, your access logs will show the correct IP addresses and even PHP's $_SERVER['REMOTE_ADDR'] variable will contain your visitors' real IP addresses instead of a CloudFlare IP address. This will resolve most problems that might occur when enabling CloudFlare on PHP-enabled web sites (like WordPress or vBulletin installs).

The same is true for other proxy setups.

For example, a Citrix Netscaler device serves the original IP record. By setting it to use “X-Forwarded-For”, which is a standard header for that purpose, you should then see the visitors' original IPs.

You may also see gateway ip/proxy ip with some null requests. This is normal. After one request is served, the IP will be reset to the LB IP before a new request arrives. When a new request arrives with the “x-Forwarded-For” header, it will be updated. For keep-alive connections, in between two requests, the LB IP will shown on the real time request list.

To avoid proxy IP addresses being blocked by server security settings, you should add LB IP to trusted IP list.

  • Admin
  • Last modified: 2016/06/08 14:52
  • by Rob Holda