Joseph Davies is an award-winning author and instructor with 18 years' experience in TCP/IP, networking, and security technologies. His books include Understanding IPV6, Second Edition and Windows Server 2008 TCP/IP Protocols and Services, and he writes the monthly column "The Cable Guy" for Microsoft TechNet.
Tony Northrup, MCSE, MCPD, MCITP, CISSP, is a Windows and networking technologies expert who has written more than 30 books and video training courses. He is coauthor of Windows 7 Resource Kit and numerous Microsoft Press Training Kits for certification exam-prep.