With the threats of cyber terrorism and corporate espionage increasing, the need for trained network security professionals continues to grow. This book describes penetration-testing tools and techniques that ethical hackers and security testers use to protect computer networks. This book offers a structured knowledge base for preparing security professionals to discover vulnerabilities and recommend solutions for tightening network security and protecting data from potential attackers. "Guide to Ethical Hacking is a fantastic book. I have told all of my students that if they are seriously interested in the field of security and penetration testing, this is the book to get. Most books discuss penetration testing; this book teaches how to do it, honorably and legally. In a nutshell, I am very proud to be a part of this book." - Randy Weaver, Technical Editor, Everest College Michael T. Simpson is president/senior consultant of MTS Consulting, Inc., specializing in network security and network design. Mike's certifications include CEH, CISSP, Security+, OSSTMM Professional Security Tester (OPST), OSSTMM Professional Security Analyst (OPSA), MCSE, MCDBA, MCSD, MCT, and OCP. He has authored or co-authored eight books and has more than twenty-four years of industry experience, including fifteen years with the Department of Defense (DoD), where he designed and configured computer networks and served as an Oracle database administrator, UNIX administrator, and information systems security officer (ISSO). Used Book in Good Condition