Written by Dr. Thomas W. Shinder, consultant to Microsoft, HP, the US Federal Government and many Fortune 500 companies on network security deployments. Tom is an author of over 30 books on Microsoft network management and security and is currently an MVP for Microsoft ISA Server, Microsoft’s premiere enterprise grade firewall. Tom continues to consult with companies of all sizes on network security configurations and writes about his experiences in a number of venues, including www.windowsecurity.com, www.windowsnetworking.com and www.isaserver.org.