With high speed caching based on nginx, varnish or CDNs in general the client ip gets lost. All
IPs get reported as 127.0.0.1 since the proxy is making the socket request. Solution is two phased:
1) enable reporting the client IP to the X-Forwarded-For header at the proxy or CDN.
This depends on the proxy will be covered in separate posts.
2) installing and configuring the mod_remoteip in Apache 2.
Project link L https://github.com/ttkzw/mod_remoteip-httpd22 mkdir /usr/local/src/mod_remoteip cd /usr/local/src/mod_remoteip wget https://raw.githubusercontent.com/ttkzw/mod_remoteip-httpd22/master/mod_remoteip.c wget https://raw.githubusercontent.com/ttkzw/mod_remoteip-httpd22/master/mod_remoteip.conf wget https://raw.githubusercontent.com/ttkzw/mod_remoteip-httpd22/master/Makefile yum install httpd-devel make make install
Configuration in the Apache config file:
# Load and configure mod_remoteip for Google PageSpeed Service
LoadModule remoteip_module /usr/lib64/httpd/modules/mod_remoteip.so
service apache reload