I've been stuck for days trying to solve this problem, I hope someone can help me with this.
I have Nginx stands as a reverse proxy in front of Apache. I'm able to log clients' real IPs by using mod_rpaf
module when using Nginx + Apache only without CloudFlare. I then decided to add CloudFlare to my server. Now CloudFlare IPs are showing instead of clients' IPs. I have the Nginx RealIP Module
installed, I tried various configurations but didn't solve the problem. I then installed mod_cloudflare
which is supposed to log real clients' IPs to Apache as described on CloudFlare, but that also didn't solve the problem.
First, The working configurations for Nginx + Apache only are as follows:
Nginx Configuration:
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
real_ip_header X-Client-IP;
mod_rpaf Configuration:
LoadModule rpaf_module /usr/local/apache/modules/mod_rpaf-2.0.so
<IfModule mod_rpaf-2.0.c>
RPAFenable On
RPAFproxy_ips 127.0.0.1 #Proxy IPs
RPAFsethostname On
RPAFheader X-Client-IP
</IfModule>
Until now clients' real IPs are shown correctly.
If anyone looking for logging real clients' IPs, you can use the above configurations.
Second, using CloudFlare with Nginx + Apache:
Nginx Configuration:
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
set_real_ip_from 204.93.240.0/24;
set_real_ip_from 204.93.177.0/24;
set_real_ip_from 199.27.128.0/21;
set_real_ip_from 173.245.48.0/20;
set_real_ip_from 103.21.244.0/22;
set_real_ip_from 103.22.200.0/22;
set_real_ip_from 103.31.4.0/22;
set_real_ip_from 141.101.64.0/18;
set_real_ip_from 108.162.192.0/18;
set_real_ip_from 190.93.240.0/20;
set_real_ip_from 188.114.96.0/20;
set_real_ip_from 197.234.240.0/22;
set_real_ip_from 198.41.128.0/17;
set_real_ip_from 162.158.0.0/15;
set_real_ip_from 104.16.0.0/12;
set_real_ip_from 172.64.0.0/13;
set_real_ip_from 2400:cb00::/32;
set_real_ip_from 2606:4700::/32;
set_real_ip_from 2803:f800::/32;
set_real_ip_from 2405:b500::/32;
set_real_ip_from 2405:8100::/32;
real_ip_header CF-Connecting-IP;
mod_rpaf Configuration:
LoadModule rpaf_module /usr/local/apache/modules/mod_rpaf-2.0.so
<IfModule mod_rpaf-2.0.c>
RPAFenable On
RPAFproxy_ips 127.0.0.1 #Proxy IPs
RPAFsethostname On
RPAFheader CF-Connecting-IP
</IfModule>
So when using CloudFlare with the above configurations, the IPs being logged belong to CloudFlare despite the configurations made.
I tried the following combinations in Nginx and mod_rpaf
configurations but there were no luck,
#Nginx
real_ip_header X-Client-IP;
real_ip_header X-Forwarded-For;
real_ip_header X-Real-IP;
#mod_rpaf
RPAFheader X-Client-IP
RPAFheader X-Forwarded-For
RPAFheader X-Real-IP
I've inserted real_ip_recursive on;
in Nginx configuration. Also, inserted all CloudFlare IP ranges to the mod_rpaf
configuration in a standalone try. However, all of that didn't solve the problem.
Any answer or comment is greatly appreciated. Thank you.