Cloudflare offers a suite of free content delivery services that will greatly benefit any OpenCart installation.

What is CloudFlare?

CloudFlare is a global CDN with security set up in five minutes through a simple DNS change.

Put another way, CloudFlare makes sites twice as fast, protects them from attacks, ensures they are always online, and makes it simple to add web apps with a single click.

With Cloudflare you get:

- Fast site performance
- Broad security protection
- Powerful stats about your visitors

It's free!

Globally load balanced content delivery network (CDN)
- 23 data centers located across the globe to make your site fast for your visitors no matter where they are.

CloudFlare optimizer
- Web pages with ad servers and third party widgets load snappy on both mobile and computers.

CloudFlare security
- Protect your website from a range of online threats from spammers to SQL injection to DDOS.

CloudFlare analytics
- Get insight into all of your website’s traffic including threats and search engine crawlers.

CloudFlare apps
- CloudFlare apps makes installing web apps on your site fast, safe and one-click simple.

Always Online™
- Keeps the static portions of your site online even if your server goes down.

Rocket Loader™
- Automatically optimizes your pages to minimize the number of network connections and ensure even third party resources won't slow down page rendering.

Global Anycast DNS
- Fast responsive times globally and near-instant updates.

CloudFlare saves you CPU resources and bandwidth by serving your static content directly from our global data centers.

This contribution just provides the snippet of code to properly pass the actual client IP behind the CDN to OpenCart.