How2CentOS published a tutorial about setting up Nginx as reverse proxy under CentOS 6.4
Nginx (pronounced “engine x”) is a free, open-source, high-performance HTTP server. Nginx is known for its stability, rich feature set, simple configuration, and low resource consumption. This tutorial will guide you through setting up Nginx as a reverse proxy in front of a Apache back-end.Install Nginx CentOS 6.4 (reverse proxy)
The assumption for installing Nginx on CentOS 6.4 is that you are running as root and have a basic understanding of the software required but if you follow this tutorial you should be able to complete the task successfully.