Sample Nginx reverse proxy to Apache set up for Wordpress.

proxy.apache.conf

<VirtualHost *:{PORT}>

  ServerName www.yourdomain.com
  ServerAdmin mail@domain.com
  DocumentRoot /var/www/yourdir/

  <Directory /var/www/yourdir>
    Options Indexes FollowSymLinks
    AllowOverride all
    Order allow,deny
    allow from all
  </Directory>

  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined

</VirtualHost>

proxy.nginx.conf

# Add this file to your /etc/nginx/sites-available directory, renaming it to
# the domain of your website. 
# Change the: server_name, port
# Credit to http://mattkirman.com/2011/06/01/how-to-speed-up-wordpress-with-nginx/.
server {
  listen 80;
  server_name www.yourdomain.com; # change this

  # global gzip on
  gzip on;
  gzip_min_length 10240;
  gzip_types text/plain text/css text/xml text/javascript application/x-javascript application/xml;
  gzip_disable "MSIE [1-6]\.";

  add_header Cache-Control public;

  location / {
    proxy_pass http://127.0.0.1:{PORT}; # change this
    proxy_buffering on;
    proxy_buffers 12 12k;
    proxy_redirect off;

    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header Host $host;
  }


}

wp-config.php

<?php
// Add this to the top of your wp-config.php file.

// Handle reverse proxy, passing the IP to the server.
// This is used by some plugins to fetch the user's IP.
if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
  $ips = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
  $_SERVER['REMOTE_ADDR'] = $ips[0];
}
?>