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IPSec VPN Design, by Vijay Bollapragada
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The definitive design and deployment guide for secure virtual private networks Learn about IPSec protocols and Cisco IOS IPSec packet processing Understand the differences between IPSec tunnel mode and transport mode Evaluate the IPSec features that improve VPN scalability and fault tolerance, such as dead peer detection and control plane keepalives Overcome the challenges of working with NAT and PMTUD Explore IPSec remote-access features, including extended authentication, mode-configuration, and digital certificates Examine the pros and cons of various IPSec connection models such as native IPSec, GRE, and remote access Apply fault tolerance methods to IPSec VPN designs Employ mechanisms to alleviate the configuration complexity of a large- scale IPSec VPN, including Tunnel End-Point Discovery (TED) and Dynamic Multipoint VPNs (DMVPN) Add services to IPSec VPNs, including voice and multicast Understand how network-based VPNs operate and how to integrate IPSec VPNs with MPLS VPNs Among the many functions that networking technologies permit is the ability for organizations to easily and securely communicate with branch offices, mobile users, telecommuters, and business partners. Such connectivity is now vital to maintaining a competitive level of business productivity. Although several technologies exist that can enable interconnectivity among business sites, Internet-based virtual private networks (VPNs) have evolved as the most effective means to link corporate network resources to remote employees, offices, and mobile workers. VPNs provide productivity enhancements, efficient and convenient remote access to network resources, site-to-site connectivity, a high level of security, and tremendous cost savings. IPSec VPN Design is the first book to present 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. Part I includes a comprehensive introduction to the general architecture of IPSec, including its protocols and Cisco IOS® IPSec implementation details. Part II examines IPSec VPN design principles covering hub-and-spoke, full-mesh, and fault-tolerant designs. This part of the book also covers dynamic configuration models used to simplify IPSec VPN designs. Part III addresses design issues in adding services to an IPSec VPN such as voice and multicast. This part of the book also shows you how to effectively integrate IPSec VPNs with MPLS VPNs. IPSec VPN Design provides you with the field-tested design and configuration advice to help you deploy an effective and secure VPN solution in any environment. 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.
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Product details
Paperback: 384 pages
Publisher: Cisco Press; 2nd edition (April 8, 2005)
Language: English
ISBN-10: 1587051117
ISBN-13: 978-1587051111
Product Dimensions:
7.3 x 0.9 x 8.9 inches
Shipping Weight: 1.4 pounds (View shipping rates and policies)
Average Customer Review:
3.6 out of 5 stars
7 customer reviews
Amazon Best Sellers Rank:
#1,640,060 in Books (See Top 100 in Books)
I just got my hands on this book and have been going through it for the past few days. I'm about halfway through and this book does a great job of explaining the basic concepts of VPN/IKE/IPsec in the first few chapters itself. The language could be more lucid, but if you've basic networking knowledge (TCP/IP/OSI), your boat will float.Now, because IPsec is a very conceptually extensive topic, don't be surprised to find more theory and explanation instead of actual configurations. There are configuration snippets wherever needed and they do help. I learned a lot more about VPN/IPSec basics in the first 6 chapters than what I was able to sniff from online papers and forums for the past few years! It sure is a one stop shop for VPN/IPsec fundamentals. It does a great job of consolidating all confusing RFCs and extracting the technical essence of it.The only reason why I took one star off is because, as mentioned before, its not a lucid read. There will be portions of text that'll make no sense when you read it the first time. Don't be intimidated, keep reading. Topics in further chapters will normally reflect on these concepts and once you begin joining the dots, things will fall into perspective.* This book is not a command reference for VPN/IPSec, though including that would be cool.
If you have fixed sites that you want to be secure, you can link the sites with leased lines and lots of simple security that will work well. But that's an expensive approach.Further, people in your organization probably travel around and need to access confidential data. How can you lift the firewall for that access and still keep intruders out? It's a harder task.The presence of moving users means that most secure networks will have some component that's going over the Internet. The Internet is not as secure as leased lines, but it's a lot cheaper. So while you're there, how much else can you do with the Internet?With IPSec VPN Design, any good network engineer will be in a position to make good choices about architecture, hardware and software.One of the basic limitations is that encryption ties up a lot of hub space while two sites are connected. The tougher the encryption you use, the more hub space is tied up. You can terminate idle connections faster and free up more space that way. You can also employ simpler means of encryption.One of the book's great strengths is that it assumes that you know about networks, but not about secure networks. So a neophyte in the area can use this helpful guide. I know, because I'm such a neophyte and the book made great sense to me.Like all the wonderful Cisco guides, this one is filled with figures to show hardware structures, examples with router and message configurations, and helpful tables that show formats.Chapter 1 is a brief introduction to VPNs.Chapter 2 is an overview of IPSec explaining algorithms, digital signatures, security protocols ((transport and tunnel modes, encapsulating security headers and authentication headers), key management and security associations (Diffie-Hellman, IKE and IPSec packet processing).Chapter 3 looks at more detailed features of IPSec such as IKE keepalives, dead peer detection, idle timeouts, IPSec and fragmentation, and IPSec and GRE).Chapter 4 is an excellent look at authentication and authorization models.Chapter 5 examines the pros and cons of different IPSec VPN architectures. I liked this chapter best. The choices are more subtle than you think because you can mix and match bits and pieces of architectures to solve specific problems.Since so many secure public networks involve applications that can't be down, chapter 6 looks in depth at fault tolerance methods.Chapter 7 offers some time-saving tips on how to use auto-configuration architectures for site-to-site applications.Chapter 8 examines application interoperability. I found the sections on mixing voice and data to be especially interesting.In chapter 9, the book concludes with looking at network-based VPNs.This book will save anyone examining the feasibility of putting secure data over the Internet a lot of mistakes, time and money.Get this book today!
printed originally in 2005 and reprinted as recently as 2014 but this book behind in technology. sure there are very detailed chapters on a few key areas but so many recent technologies are not mentioned at all. Virtual Tunnel interfaces are barely brushed in a few examples but really an entire chapter should have been dedicated to this design for places where DMVPN cannot be used. There is significant discussion about ezVPN but unless you have the latest and greatest IOS and hardware, ezVPN is not applicable to you.
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