Daniel Lopez Ridruejo is a senior developer with CovalentTechnologies, Inc., which provides Apache software, support, and services for the enterprise. He is the author of several popular Apache and Linux guides and of Comanche, a GUI configuration tool for Apache. Daniel is a regular speaker at open source conferences such as LinuxWorld, ApacheCon, and O'Reilly OSCON. He holds an Ms. Sc. in communications engineering from the University of Sevilleand Denmark Technical University. Daniel is a member of the Apache Group.