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Tony Howlett is the president of Network Security Services, a computer-security application service provider built entirely on open-source software. A Certified Information Systems Security Professional (CISSP) and GIAC Systems and Network Auditor (GNSA), he has fourteen years of experience, including running a major regional ISP/CLEC and building a nationwide ATM/DSL network. Mr. Howlett is a frequent speaker on computer security and has written for Computer Currents, Windows Web Solutions, Security Administrator, and other magazines.