Inside Network Perimeter Security, the Book

I produced and co-authored Inside Network Perimeter Security, which is a practical guide to designing, deploying, and maintaining network defenses. This book is unusual in that it has a consistent phrasing and style, yet it consolidates the experience of more than a dozen information security professionals working together as a team of writers and reviewers.

The first edition of the book was very well received, which motivated us to update and expand its text. As a result of this effort, the second edition of the book became available in stores in March, 2005.

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Inside Network Perimeter Security, 2nd Edition
By Stephen Northcutt, Lenny Zeltser, Scott Winters, Karen Kent, Ronald W. Ritchey
ISBN: 0672327376
Sams Publishing
March, 2005

The second edition is more recent, but the Amazon.com listing for the book's first edition might be useful for a historical perspective:

insidenps-1ed-cover-large

Inside Network Perimeter Security, 1st Edition
By Stephen Northcutt, Lenny Zeltser, Scott Winters, Karen Kent, Ronald W. Ritchey
ISBN: 0735712328
New Riders/Sams Publishing
June, 2002

Updated January 30, 2015
Lenny Zeltser

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About the Author

I transform ideas into outcomes, building on my 25 years of experience in cybersecurity. As the CISO at Axonius, I lead the security program to earn customers' trust. I'm also a Faculty Fellow at SANS Institute, where I author and deliver training for incident responders. The variety of cybersecurity roles I've held, and the expertise I’ve accumulated allow me to create practical solutions that drive business growth.

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