Home > Store

IPSec Virtual Private Network Fundamentals

Add To My Wish List

IPSec Virtual Private Network Fundamentals

By James Henry Carmouche
Published Jul 19, 2006 by Cisco Press.

eBook

Your Price: $49.59
List Price: $61.99
Includes EPUB and PDF
About eBook Formats

This eBook includes the following formats, accessible from your Account page after purchase:

ePub EPUB The open industry format known for its reflowable content and usability on supported mobile devices.

Adobe Reader PDF The popular standard, used most often with the free Acrobat® Reader® software.

This eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours.

Add to cart

Description

Sample Content

Updates

Copyright 2007
Pages: 480
Edition: 1st

eBook
ISBN-10: 0-13-279833-6
ISBN-13: 978-0-13-279833-4

An introduction to designing and configuring Cisco IPsec VPNs

Understand the basics of the IPsec protocol and learn implementation best practices

Study up-to-date IPsec design, incorporating current Cisco innovations in the security and VPN marketplace

Learn how to avoid common pitfalls related to IPsec deployment

Reinforce theory with case studies, configuration examples showing how IPsec maps to real-world solutions

IPsec Virtual Private Network Fundamentals provides a basic working knowledge of IPsec on various Cisco routing and switching platforms. It provides the foundation necessary to understand the different components of Cisco IPsec implementation and how it can be successfully implemented in a variety of network topologies and markets (service provider, enterprise, financial, government). This book views IPsec as an emerging requirement in most major vertical markets, explaining the need for increased information authentication, confidentiality, and non-repudiation for secure transmission of confidential data. The book is written using a layered approach, starting with basic explanations of why IPsec was developed and the types of organizations relying on IPsec to secure data transmissions. It then outlines the basic IPsec/ISAKMP fundamentals that were developed to meet demand for secure data transmission. The book covers the design and implementation of IPsec VPN architectures using an array of Cisco products, starting with basic concepts and proceeding to more advanced topics including high availability solutions and public key infrastructure (PKI). Sample topology diagrams and configuration examples are provided in each chapter to reinforce the fundamentals expressed in text and to assist readers in translating concepts into practical deployment scenarios. Additionally, comprehensive case studies are incorporated throughout to map topics to real-world solutions.

Contents

Introduction

Part I Introductory Concepts and Configuration/Troubleshooting

Chapter 1 Introduction to VPN Technologies

VPN Overview of Common Terms

Characteristics of an Effective VPN

VPN Technologies

Virtual Private Dialup Networks

Multiprotocol Label Switching VPNs

IPsec VPNs

Transport Layer VPNs

Common VPN Deployments

Site-to-Site VPNs

Remote Access VPNs

Business Drivers for VPNs

Remote Access VPN Business Drivers–A Practical Example

Site-to-Site VPN Business Drivers–A Practical Example

IPsec VPNs and the Cisco Security Framework

Summary

Chapter 2 IPsec Fundamentals

Overview of Cryptographic Components

Asymmetric Encryption

Symmetric Encryption

Message Authentication, Message Integrity, and Sender Nonrepudiation Mechanisms

Public Key Encryption Methods

RSA Public-Key Technologies

Diffie-Hellman Key Exchange

The IP Security Protocol (IPsec)

IPsec Modes

IPsec Transforms

IPsec SA

IPsec Configuration Elements

Manual Keying

The Need for Security Association and Key Management

IKE and ISAKMP

IKE and ISAKMP Terminology and Background

IKE SA Negotiation and Maintenance

IPsec Diffie-Hellman Shared Secret Key Generation Using IKE

IKE Authentication Services

IKE Phase I Negotiation

IKE Phase II Negotiation

Configuring ISAKMP

IKE with RAVPN Extensions

Summary

Chapter 3 Basic IPsec VPN Topologies and Configurations

Site-to-Site IPsec VPN Deployments

Site-to-Site VPN Architectural Overview for a Dedicated Circuit

Site-to-Site Architectural Overview over a Routed Domain

Site-to-Site IPsec VPN Deployments and GRE (IPsec+GRE)

Site-to-Site IPsec+GRE Architectural Overview

Site-to-Site IPsec+GRE Sample Configurations

Hub-and-Spoke IPsec VPN Deployments

Hub-and-Spoke Architectural Overview

Standard Hub-and-Spoke Design without High Availability

Clustered Spoke Design to Redundant Hubs

Redundant Clustered Spoke Design to Redundant Hubs

Remote Access VPN Deployments

RAVPN Architectural Overview

RAVPN Clients

Standalone VPN Concentrator Designs

Clustered VPN Concentrator Designs

Summary

Chapter 4 Common IPsec VPN Issues

IPsec Diagnostic Tools within Cisco IOS

Common Configuration Issues with IPsec VPNs

IKE SA Proposal Mismatches

IKE Authentication Failures and Errors

IPsec SA Proposal Mismatches

Crypto-Protected Address Space Issues (Crypto ACL Errors)

Architectural and Design Issues with IPsec VPNs

Troubleshooting IPsec VPNs in Firewalled Environments

NAT Issues in IPsec VPN Designs

The Influence of IPsec on Traffic Flows Requiring QoS

Solving Fragmentation Issues in IPsec VPNs

The Effect of Recursive Routing on IPsec VPNs

Summary

Part II Designing VPN Architectures

Chapter 5 Designing for High Availability

Network and Path Redundancy

IPSec Tunnel Termination Redundancy

Multiple Physical Interface HA with Highly Available Tunnel Termination Interfaces

Tunnel Termination HA Using HSRP/VRRP Virtual Interfaces

HA with Multiple Peer Statements

RP-based IPSec HA

Managing Peer and Path Availability

Peer Availability

Path Availability

Managing Path Symmetry

Load Balancing, Load Sharing, and High Availability

Load-Sharing with Peer Statements

Routing

Domain Name System (DNS)

Cisco VPN3000 Concentrator Clustering

IPSec Session Load-Balancing Using External Load Balancers

Summary

Chapter 6 Solutions for Local Site-to-Site High Availability

Using Multiple Crypto Interfaces for High Availability

Impact of Routing Protocol Reconvergence on IPsec Reconvergence

Impact of Stale SAs on IPsec Reconvergence

Impact of IPsec and ISAKMP SA Renegotiation on IPsec Reconvergence

Stateless IPsec VPN High-Availability Alternatives

Solution Overview for Stateless IPsec High Availability

Stateless High Availability Failover Process

Stateful IPsec VPN High-Availability Alternatives

Solution Overview for Stateful IPsec High Availability

Stateful High Availability Failover Process

Summary

Stateless IPsec VPN High Availability Design Summary

Stateful IPsec VPN High Availability Design Summary

Chapter 7 Solutions for Geographic Site-to-Site High Availability

Geographic IPsec VPN HA with Reverse Route Injection and Multiple IPsec Peers

Solution Overview for RRI with Multiple IPsec Peers

Geographic IPsec VPN High Availability with IPsec+GRE and Encrypted Routing

Protocols

Solution Overview for IPsec+GRE with Encrypted Routing Protocols

Dynamic Multipoint Virtual Private Networks

DMVPN Solution Design Drivers

DMVPN Component-Level Overview and System Operation

Summary

Chapter 8 Handling Vendor Interoperability with High Availability

Vendor Interoperability Impact on Peer Availability

The Inability to Specify Multiple Peers

Lack of Peer Availability Mechanisms

Vendor Interoperability Impact on Path Availability

IPSec HA Design Considerations for Platforms with Limited Routing

Protocol Support

IPSec HA Design Considerations for Lack of RRI Support

IPSec HA Design Considerations for Lack of Generic Routing Encapsulation (GRE)

Support

Vendor Interoperability Design Considerations and Options

Phase 1 and 2 SA Lifetime Expiry

SADB Management with Quick Mode Delete Notify Messages

Invalid Security Parameter Index Recovery

Vendor Interoperability with Stateful IPSec HA

Summary

Chapter 9 Solutions for Remote-Access VPN High Availability

IPsec RAVPN Concentrator High Availability Using Virtual Interfaces for Tunnel

Termination

IPsec RAVPN Concentrator High Availability Using VRRP

IPsec RAVPN Concentrator HA Using HSRP

IPsec RAVPN Concentrator HA Using the VCA Protocol

IPsec RAVPN Geographic HA Design Options

VPN Concentrator Session Load Balancing Using DNS

VPN Concentrator Redundancy Using Multiple Peers

Summary

Chapter 10 Further Architectural Options for IPsec

IPsec VPN Termination On-a-Stick

IPsec with Router-on-a-Stick Design Overview

Case Study: Small Branch IPsec VPN Tunnel Termination with NAT On-a-Stick

In-Path Versus Out-of-Path Encryption with IPsec

Out-of-Path Encryption Design Overview

Case Study: Firewalled Site-to-Site IPsec VPN Tunnel Termination

Separate Termination of IPsec and GRE (GRE-Offload)

GRE-Offload Design Overview

Case Study: Large-Scale IPsec VPN Tunnel Termination with GRE Offload

Summary

Part III Advanced Topics

Chapter 11 Public Key Infrastructure and IPsec VPNs

PKI Background

PKI Components

Public Key Certificates

Registration Authorities

Certificate Revocation Lists and CRL Issuers

Certificate Authorities

PKI Cryptographic Endpoints

Life of a Public Key Certificate

RSA Signatures and X.509v3 Certificates

Generating Asymmetric Keypairs on Cryptographic Endpoints

Registration and Endpoint Authentication

Receipt and Authentication of the CA’s Certificate

Forwarding and Signing of Public Keys

Obtaining and Using Public Key Certificates

PKI and the IPSec Protocol Suite–Where PKI Fits into the IPSec model

OCSP and CRL Scalability

OCSP

Case Studies and Sample Configurations

Case Study 1: PKI Integration of Cryptographic Endpoints

Case Study 2: PKI with CA and RA

Case Study 3: PKI with Redundant CAs (CA Hierarchy)

Summary

Chapter 12 Solutions for Handling Dynamically Addressed Peers

Dynamic Crypto Maps

Dynamic Crypto Map Impact on VPN Behavior

Dynamic Crypto Map Configuration and Verification

Tunnel Endpoint Discovery

TED Configuration and Verification

Case Study–Using Dynamic Addressing with Low-Maintenance Small Home Office

Deployments

Summary

Appendix A Resources

Books

RFCs

Web and Other Resources

Index

Submit Errata

Cisco Press Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Cisco Press and its family of brands. I can unsubscribe at any time.

Privacy Notice

Overview

Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Cisco Press products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@ciscopress.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security

Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children

This site is not directed to children under the age of 13.

Marketing

Pearson may send or direct marketing communications to users, provided that

Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
Such marketing is consistent with applicable law and Pearson's legal obligations.
Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out

Users can always make an informed choice as to whether they should proceed with certain services offered by Cisco Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.ciscopress.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

As required by law.
With the consent of the individual (or their parent, if the individual is a minor)
In response to a subpoena, court order or legal process, to the extent permitted or required by law
To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
To investigate or address actual or suspected fraud or other illegal activities
To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links

This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020

Email Address