Yuri Diogenes is a Microsoft senior support escalation engineer specializing in Forefront Edge Security. He is coauthor of the Forefront Community Site "Tales from the Edge", writes Forefront security articles for Microsoft TechNet Magazine, and is a primary contributor to the Microsoft ISA Server Team Blog. Before joining Microsoft, Yuri was a network advisor for a Microsoft Gold Partner and taught Network and Operating System disciplines at the University in Brazil. Dr. THOMAS W. SHINDER, MCSE, is a Microsoft MVP for Forefront Edge Security, the author of six highly regarded books on Microsoft ISA Server, and the administrator of the largest community of ISA and TMG firewall administrators on the Internet, with over 500 articles on the ISA and TMG firewalls and over 50,000 registered users. He has worked as a technology trainer, writer, and consultant since 1996, and has provided consultative security guidance to Fortune 500 companies.