Earl Follis is a long-time IT professional who has worked as a technical trainer, technical evangelist, network administrator, and in other IT positions for a variety of companies, including Thomas-Conrad Corp., IBM Tivoli, Nimsoft and Dell. He has also contributed to numerous books, including For Dummies titles on Windows Server and NetWare, and has written for many print and Web publications. His primary areas of technical interest include networking, operating systems, cloud computing and unified monitoring.