In this article I will briefly go through instructions on installing mod_cloudflare on an Ubuntu 14.04 server running Apache 2.4.
The reason we need the mod_cloudflare module is because Cloudflare acts as a reverse proxy meaning that visitor IP addresses in your access logs (/var/log/apache2/access.log) will appear to come from any one of Cloudflare’s IP addresses; all of which they make available here.