Building Linux Virtual Private Networks
Oleg Kolesnikov
Lead Author

Oleg Kolesnikov received his B.S. from the Georgia Institute of Technology in Atlanta. He has worked in the industry for more than a decade as a system administrator and a security consultant. Currently, he is focusing on research in Computer Networks and Security. He has been working with the Distributed Security department at the Berkeley Lab. When he is not busy reflecting on another research topic he enjoys skiing, rollerblading, playing soccer, and paintball. His web page is available at

Bri Hatch Chief Hacker, Onsight Inc.
Co Author

Bri Hatch is Chief Hacker at Onsight, Inc. where he is a Unix/Linux and network security consultant. His clients have ranged from major banks, pharmaceutical companies and educational institutions to major California web browser developers and dot-coms that haven't failed. He has taught various security, Unix, and programming classes for corporations through Onsight and as an adjunct instructor Northwestern University. He has been securing and breaking into systems since before he traded in his Apple II+ for his first Unix system. He is also co-maintainer of Stunnel, an Open Source secure SSL wrapper used around the world to encrypt cleartext protocols.

Chris Davis
Contributing Author

Chris Davis is currently working as an INFOSEC consultant for Lucent Technologies. He has been active in the fields of information and computer security for four years, with a research concentration in the relationship between artificial intelligence and information security. His current project involves the application of learning algorithms to Intrusion Detection Systems.

Chris Mongold
Contributing Author

Chris Mongold has been working in information technology for nearly 10 years, focusing on the UNIX and networking arena. Previously, he has worked as a software developer, network engineer and consultant. He has developed solutions for companies in the Telecommunications, Financial, and Automotive industries among others. Currently he is a Senior Security Analyst for NiSource, Inc.

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