IPSec VPN Design by Vijay Bollapragada, Mohamed Khalid and Scott Wainner presents a detailed examination of the design aspects of IPSec protocols that enable secure VPN communication. Divided into three parts, the book provides a solid understanding of design and architectural issues of large-scale, secure VPN solutions.
Chapter four, excerpted here, covers IPSec features and mechanisms that are primarily targeted at the authentication of remote access users. You'll learn about XAUTH, which provides extended authentication for IPSec telecommuters.
(Reproduced from the book IPSec VPN Design, ISBN 1587051117, Copyright 2005, Cisco Systems, Inc. Reproduced by permission of Pearson Education, Inc., 800 East 96th Street, Indianapolis, IN 46240. Written permission from Pearson Education, Inc. is required for all other uses. Visit www.ciscopress.com for a detailed description and to learn how to purchase this title.)