Customer Reviews

Designing Network Security

5 star:		(7)
4 star:		(9)
3 star:		(0)
2 star:		(1)
1 star:		(0)

 

 

Excellent overview of network security issues. Covers almost all threats, protocols and safeguards in a concise manner. One of the books that should be read for CISSP preparation.

Bogs down when it gets to Cisco specific configurations. As a CCIE, even I find that books of this type provide only the tip of the iceberg when it comes to the complexity of Cisco configurations.

Exam 640-442 is the Security Specialistization for people who have attained their CCNP certification. Excellent coverage of AAA, TACACS+, RADIUS, PIX, 3DES, DMZ as well as IPSEC and CBAC. This is alot of material to be discussed in one book. Cisco provides a CD ROM with this same material for $250.00, this is a much better deal. If you want to enhance your knowledge of access-lists, reflexive access-lists etc. this is the book for you. Merike did her homework on this material, I completed many of the configurations presented in the book, they were accurate.

Up through Chapter 7, this book presents a fairly good overview of information security in general, network security basics, cryptography, and a good measure of "security philosophy" as well. It reads pretty well and there are relatively few inconsistencies, until...

From Chapter 8 onwards, there are lots of mistakes (my personal favorite is a botched explanation of TCP proxies on page 248) and many cases of examples not matching the explanatory text. And when it comes to enabling TACACS+ on routers, some sections of this book directly contradict Cisco's "IOS 12 Network Security" book.

All in all, a decent reference for Cisco routers & firewalls, but you might want to supplement it with something more substantial. The O'Reilly books and Cheswick/Bellovin come to mind...

This is a big book, 745 pages, a bit about almost every topic in information security. The advantage of a book like this is that if you want to know three paragraphs about a security term that you are not familiar with, you can find it. The disadvantage of these survey type books is that they do not usually give you enough information to do anything.

Though there are some spots especially in the first few chapters where this happens, Merike Kaeo, the author, quickly succeeds in making this a book that goes beyond telling the reader about things and begins to share how to do things on Cisco equipment which is far more valuable. If you are a Cisco network engineer or administrator and are interested in learning more about information security this is probably a good book for you. I think this book would also benefit a manager or someone with purely theoretical information security knowledge that wants to be able ask technical people pragmatic questions.

The Voice over IP chapter was one of the clearest explanations I have seen, however a bit more of a warning about security, changing standards and interoperability would have been appreciated.

When work begins on 3rd edition, I would suggest more focus on using routing and switching technology to segment the internal network so a worm infection does not take down the entire facility. In general user VLANS to not need to talk to other user VLANS, they only need to communicate with servers.

My favorite part of the book is Appendix D, somehow I had never seen Rob Thomas paper on DDOS.

I really enjoyed reading this book. Lot's of information pertaining to PIX, Access-lists, Distribute Lists, IPsec. Every angle was covered, I compared to the Cisco 12.0 Ios Network Security book, this one had more detail. Which is difficult considering how much is covered with Cisco documentation. If you've read the articles pertaining to Cisco's investment in the Security market, you've got to have this book. This book is the security what Halibi's book is to BGP.

I recently read the book titled "Designing Network Security" by Merike Kaeo. ISBN: 1587051176. This book happens to be the second edition of the title. This book is an excellent source of information regarding network security and security in general. The book covers a broad scope of technologies and areas relating to security. Probably the single best source for security topics in one book that I've read. It's an A-Z book on security.

The fading lines of responsibility in the realm of security is pretty much forcing every Information Technology (IT) professional to play a role in today's security strategy. With the boundaries being sketch well with in most every facet of Information Technology, it leave a big gap as to what the everyday IT professional can understand and contribute to a successful security architecture. This book, in my opinion, does an excellent job of bridging that wide gap for most networking professionals. I think every networking professional should have a copy of this book on their desk.

This book is best suited for professionals with a beginner to intermediate level of understanding of security principles, concepts and technologies. This book is essential for professionals looking to keep up with the ever-changing world of IT. Having this book will allow you to understand some of the more challenging and complex concepts that face each and every IT professional regarding security. Persons that are interested in achieving the popular Certified Information Systems Security Professional (CISSP) certification would find this title very helpful, not just as a resource to pass the exam, but also as a valuable reference to continue to learn from even after becoming certified.

There are great supporting figures and diagrams that assist in grasping some of the complex ideas and technologies. Most are very basic and stick to the principle concepts, which is great when getting your feet wet with a technology that's new to you. It provides a good foundation to build upon.

Compared to the first version of this title, the second version offers information regarding leading edge technologies such as Voice over IP (VoIP) and wireless networks. Another topic covered in the second version is Virtual Private Networks (VPN). Making the second version of this title a very well rounded resource. Another new chapter in the second addition is on Routing Protocol Security. The Routing Protocol Security chapter has some good information on several of the widely deployed Interior Gateway Protocols such as RIP, EIGRP and OSPF. The chapter covers information mostly on the authentication pieces and fundamental rules of each routing protocol and not much more. I found the small section on BGP in the chapter to be a little sparse and expected BGP to be covered in a bit more detail. Nonetheless, is does mention briefly, some of the challenges with BGP and a few of the proposed successors of the BGP protocol such as S-BGP and SoBGP.

This is an all-a-round good reference for network security.

Designing Network Security, 2nd Edition, Merike Kaeo, Cisco Press (ISBN 1-58705-117-6)

In the world of network security, it is easy to get lost in a particular technology or application and fail to see "the forest from the trees." While the author does cover many of the "trees" in the world of network security, I find that this book is also helpful in obtaining a view of the "forest" of network security from a practical rather than a strictly conceptual perspective. I am especially impressed with breadth and depth that this book contains in this revised and updated 2nd edition.

Although written primarily for users of Cisco Systems equipment, the first eight chapters do contain information of interest to all network engineers involved in the design of network security. From PKI, Kerberos, and RADIUS to IPSec, 802.11b wireless, 802.1x port authentication and routing protocols, this book covers the full range of security areas that a network engineer needs to understand. Looking to set up a DMZ? Wanting to understand IPSec? Looking to reduce your organization's risk of being attacked? It is all covered here. Even Cisco's LEAP (Lightweight Extensible Authentication Protocol) for wireless networks is discussed. I cannot think of any relevant network security topic that the author has missed.

Chapters 9 through 12 provide the practical implementation steps and configuration scripts required to secure a Cisco-based network. IOS, CatOS, and PIX Firewall configuration templates are included as examples. As a component of network security, network availability in layer 2 and layer 3 networks is also discussed. A network designer can use these chapters to design a fundamentally secure Cisco network.

Note that this book is not intended for someone new to networking - there is an assumption of a solid understanding of basic networking and telecommunications concepts. If you are new to networking you may find this book a little too challenging. I think that someone who has a solid networking background can successfully read this book from cover to cover and grasp all of the concepts. This book will probably be the most useful for network engineers and security specialists working in a Cisco network and tasked with improving network security.

I find the end of chapter questions to be useful in stimulating the network design thinking process. Although this book is not designed to be a certification guide, someone pursuing the CCSP (Cisco Certified Security Professional) or the CCIE Security certifications may find this book to be a helpful overview of the relevant security technologies.

This is not intended as a criticism, but be aware that since this book covers so many network security topics, it may not cover a specific area to the depth that you are looking for. This is understandable since the book is intended to cover the fundamentals of network security. If you are looking for an exhaustive treatment of one particular area such as NIDS (Network Intrusion Detection Systems), you will need to consult other materials.

This book will likely remain on your shelf as a ready reference guide to the design of network security.

This is an excellent book for crytography, security policy and access control. I suggest this book for those taking the CISSP exam because of its information on encryption. There are sections that at a bit heavy on CISCO configuration but that is expected since they wrote it.

Practical, concise and very up-to-date.
The description of the chapters 1 and 2 is quite didactic.
The chapters 9 and 12 are excellent.
I recommend this book for those who want to connect the theory of the cryptography with the practice at hardware level.

Summary: A good overall resource on network security policy, design, and implementation.

I wish I had the benefit of this book when I was first starting out in my career in security. Weighing in at a hefty 745 pages, Designing Network Security 2nd. Ed. By Merike Kaeo (ISBN 1-58705-117-6) is a consise and fairly authoritative guide to the sometimes daunting task of designing secure networks - with a special emphasis placed on Cisco solutions of course. The book is divided into three major sections that break down to basic theory and essentials, policy design and best practices, and implementation with Cisco hardware. In my opinion it is best suited as a reference book for those who already have a firm foundation in security and networking, but could also be of value to beginner level techs with a bit of patience. While the topics that are covered have all pertinent information discussed, some might wish that there were a bit more explanation of the hows and whys.

The first section - "Security Fundamentals" is an especially valuable part of the book in that it provides a great desk reference to the building blocks of secure networks. The first chapter deals with the basics of encryption technologies - symmetrical/asymmetrical cryptography, digital hashes, public key systems, etc. From there the book moves into what is probably its meatiest chapter which covers the application of encryption into security technologies which range from TACACS+ authorization to TLS encryption. Following the precedent of building on previous chapters, the third chapter deals with the application of these security technologies into protecting real world installations. I was especially impressed with the attention paid to wireless and VOIP technologies in this chapter - this is one of the first discussions of VOIP security I have seen in a general reference book. The first section winds up with a fairly exhaustive discussion on routing protocol security which I also thought was excellent.

The second section - "The Corporate Security Policy" is a good reference to infosec management. Many topics covered in this section are applicable to the CISSP exam, so if that is a career goal for you this can act as one of your study guides. The section begins with a discussion of threats in the enterprise environment. Types of threats as well as common protocol vulnerabilites are discussed. I felt that some of the material in this chapter was a bit dated, in particular the sections on TCP sequence number attacks (most recent OS's have improved their sequence generation routines to make it nearly impossible to do this) and the ping of death (which I don't remember working on anything after Windows 95 or Linux 2.0.23). The next chapter is a bit more valuable in its discussion of the basics of risk assessment and management. This leads into a discussion of actual design and implementation of security policy. Sample topics include physical/logical controls, data confidentiality, and policies/procedures for staff. And finally this section concludes with a good chapter on incident handling and response.

The final section - "Practical Implementation" is the Cisco-centric third of the book. Many parts of this section are a good reference to points covered on the CCSP exams, especially the SECUR test. The first chapter deals with configuring access controls and audit on Cisco devices from the PIX to switches and routers. A brief discussion of intrusion detection implementations is also included. The next chapter consists of primarily information dealing with firewall/screening router construction - content filtering, packet screening, and the various types of IOS filters. Several implementation examples are included to walk you through the process of configuring CBAC (content-based access control) and the Cisco PIX. From there the section moves to remote access security, with good sections on all Cisco based AAA (authentication, authorization, and accounting) features including lock-and-key and accounting-based billing. Finally, the book wraps up with a chapter on securing VPN, Wireless, and VOIP networks which focuses more on design than implementation, although there are still some Cisco (PIX) based examples. The book's appedices cover DDOS attacks, well-known port numbers, and guidelines for reporting and preventing intrusions.

Overall I felt this was an excellent book which clearly fufilled its purpose. For the intermediate to advanced network security engineer this could act as an excellent desktop reference, while still being accessible enough to teach to the beginner. The writing style is clear and precise, and I found no technical errors in the material presented. As I mentioned the book could act as an additional study aid for several security certifications including the CISSP or the CCSP. I look forward to the next volume by Ms. Kaeo.