Extended description of HttpLimitZoneModule and HttpLimitReqModule usage with examples and how to exclude a whitelist of IPs can be found here http://gadelkareem.com/2012/03/25/limit-requests-per-ip-on-nginx-using-httplimitzonemodule-and-httplimitreqmodule-except-whitelist/ -- Posted via http://www.ruby-forum.com/.