Anand Deveriya, CCIE (R) No. 10401, is a senior network engineer with NEC Unified Solutions, where he designs and deploys secure, scalable, and redundant networks using Cisco technology and products. In his various networking roles, he has devised solutions for many of the network administration challenges noted throughout this book. Anand was a technical editor for CCIE Security Exam Certification Guide, published by Cisco Press.