What book is the official CCIE Security Exam Certification Guide ?
I checked the Cisco press, it has
ISBN-10: 1-58720-135-6; ISBN-13: 978-1-58720-135-6; Published: May 11, 2005; Edition: 2nd, By Henry Benjamin.
but Cisco press says -
This publication currently is not for sale.
Cisco Press has recently updated the testing engine databases for this book.