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About the contributor:
Dave Shackleford is the owner and principal consultant of Voodoo Security, Lead Faculty at IANS, and a SANS analyst, senior instructor, and course author. He has consulted with hundreds of organizations in the areas of security, regulatory compliance, and network architecture and engineering, and is a VMware vExpert with extensive experience designing and configuring secure virtualized infrastructures.
This was first published in October 2013