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Denise Helfrich - Cisco Network Admission Control, Volume I: NAC Framework Architecture and Design

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Cisco Network Admission Control

Volume I: NAC Framework Architecture and Design

A guide to endpoint compliance enforcement

Today, a variety of security challenges affect all businesses regardless of size and location. Companies face ongoing challenges with the fight against malware such as worms, viruses, and spyware. Todays mobile workforce attach numerous devices to the corporate network that are harder to control from a security policy perspective. These host devices are often lacking antivirus updates and operating system patches, thus exposing the entire network to infection. As a result, worms and viruses continue to disrupt business, causing downtime and continual patching. Noncompliant servers and desktops are far too common and are difficult to detect and contain. Locating and isolating infected computers is time consuming and resource intensive.

Network Admission Control (NAC) uses the network infrastructure to enforce security policy compliance on all devices seeking to access network computing resources, thereby limiting damage from emerging security threats. NAC allows network access only to compliant and trusted endpoint devices (PCs, servers, and PDAs, for example) and can restrict the access of and even remediate noncompliant devices.

Cisco Network Admission Control, Volume I, describes the NAC architecture and provides an in-depth technical description for each of the solution components. This book also provides design guidelines for enforcing network admission policies and describes how to handle NAC agentless hosts. As a technical primer, this book introduces you to the NAC Framework solution components and addresses the architecture behind NAC and the protocols that it follows so you can gain a complete understanding of its operation. Sample worksheets help you gather and organize requirements for designing a NAC solution.

Denise Helfrich is a technical program sales engineer that develops and supports global online labs for the World Wide Sales Force Development at Cisco.

Lou Ronnau, CCIE No. 1536, is a technical leader in the Applied Intelligence group of the Customer Assurance Security Practice at Cisco.

Jason Frazier is a technical leader in the Technology Systems Engineering group for Cisco.

Paul Forbes is a technical marketing engineer in the Office of the CTO, within the Security Technology Group at Cisco.

  • Understand how the various NAC components work together to defend your network
  • Learn how NAC operates and identifies the types of information the NAC solution uses to make its admission decisions
  • Examine how Cisco Trust Agent and NAC-enabled applications interoperate
  • Evaluate the process by which a policy server determines and enforces a policy
  • Understand how NAC works when implemented using NAC-L2-802.1X, NAC-L3-IP, and NAC-L2-IP
  • Prepare, plan, design, implement, operate, and optimize a network admission control solution

This security book is part of the Cisco Press Networking Technology Series. Security titles from Cisco Press help networking professionals secure critical data and resources, prevent and mitigate network attacks, and build end-to-end self-defending networks.

Category: Cisco PressSecurity

Covers: Network Admission Control

1587052415120506

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Cisco Network Admission Control, Volume I
NAC Framework Architecture and Design

Denise Helfrich, Lou Ronnau, Jason Frazier, Paul Forbes

Cisco Press
Cisco Press
800 East 96th Street
Indianapolis, IN 46240 USA

Cisco Network Admission Control, Volume I

NAC Framework Architecture and Design

Denise Helfrich, Lou Ronnau, Jason Frazier, Paul Forbes

Copyright 2007 Cisco Systems, Inc.

Published by:
Cisco Press
800 East 96th Street
Indianapolis, IN 46240 USA

All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without written permission from the publisher, except for the inclusion of brief quotations in a review.

Printed in the United States of America 1 2 3 4 5 6 7 8 9 0

First Printing December 2006

Library of Congress Cataloging-in-Publication Number: 2005923482

ISBN: 1-58705-241-5

Warning and Disclaimer

This book is designed to provide information about Network Admission Control Framework Release 2 components and identifies steps to prepare, plan, and design NAC Framework. Every effort has been made to make this book as complete and as accurate as possible, but no warranty or fitness is implied.

The information is provided on an "as is" basis. The authors, Cisco Press, and Cisco Systems, Inc. shall have neither liability nor responsibility to any person or entity with respect to any loss or damages arising from the information contained in this book or from the use of the discs or programs that may accompany it.

The opinions expressed in this book belong to the author and are not necessarily those of Cisco Systems, Inc.

Feedback Information

At Cisco Press, our goal is to create in-depth technical books of the highest quality and value. Each book is crafted with care and precision, undergoing rigorous development that involves the unique expertise of members from the professional technical community.

Readers' feedback is a natural continuation of this process. If you have any comments regarding how we could improve the quality of this book, or otherwise alter it to better suit your needs, you can contact us through email at . Please make sure to include the book title and ISBN in your message.

We greatly appreciate your assistance.

Trademark Acknowledgments

All terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized. Cisco Press or Cisco Systems, Inc. cannot attest to the accuracy of this information. Use of a term in this book should not be regarded as affecting the validity of any trademark or service mark.

Corporate and Government Sales

Cisco Press offers excellent discounts on this book when ordered in quantity for bulk purchases or special sales.

For more information, please contact: U.S. Corporate and Government Sales 1-800-382-3419

For sales outside the U.S., please contact: International Sales

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Contents at a Glance
About the Authors

Denise Helfrich is currently a technical program sales engineer developing and supporting global online labs for the Worldwide Sales Force Delivery. For the previous six years, she was a technical marketing engineer in the Access Router group, focusing on security for Cisco Systems. She is the author of many Cisco training courses, including Network Admission Control. She has been active in the voice/networking industry for over 20 years.

Lou Ronnau, CCIE No. 1536, is currently a technical leader in the Applied Intelligence group of the Customer Assurance Security Practice at Cisco Systems. He is the author of many Cisco solution guides along with Implementing Network Admission Control: Phase One Configuration and Deployment. He has been active in the networking industry for over 20 years, the last 12 years with Cisco Systems.

Jason Frazier is a technical leader in the Technology Systems Engineering group for Cisco Systems. He is a systems architect and one of the founders of Cisco's Identity-Based Networking Services (IBNS) strategy. Jason has authored many Cisco solution guides and often participates in industry forums such as Cisco Networkers. He has been involved with network design and security for seven years.

Paul Forbes is a technical marketing engineer in the Office of the CTO, within the Security Technology Group. His primary focus is on the NAC Partner Program, optimizing the integration between vendor applications and Cisco networking infrastructure. He is also active in other security architecture initiatives within the Office of the CTO. He has been active in the networking industry for ten years, as both a customer and working for Cisco.

About the Technical Reviewers

David Anderson, CCIE No. 7660, is an engineer in Cisco's Security Technology CTO Group. In his current role, he is working on next-generation security solutions for identity management, admission control, and security policy enforcement. He has worked on a variety of products and solutions during his seven years at Cisco. This work has included dial-access, disaster recovery, business continuance, application optimization, data center design, security architectures, and network admission control. David has authored and contributed to multiple design guides and white papers on these subjects. He has also presented these topics at conferences and forums in multiple countries. David currently holds both CCIE and CISSP certifications.

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