Most Helpful Customer Reviews
|
|
13 of 14 people found the following review helpful:
5.0 out of 5 stars
Building Wireless Community Networks Review, March 4, 2002
Building Wireless Community ... First Edition, January 2002, 138 pages
By Rob Flickenger
© Copyright 2002 by O'Reilly & Associates, Inc.
ISBN 0-596-00204-1
Review written March 3, 2002
By Donald W. Larson, O'Reilly Book Evangelist
Email: dwlarson@sd.znet.com
...Anyone who wants to learn about the usage of WiFi, more commonly known as 802.11b wireless should order this book now and read it immediately upon delivery! Each and every chapter explains is sufficient detail what the new standard is, how to use it and extend the range legally for broadcasts. Anytime someone points out through the purchase of a can of Pringles and then turns that chip container into a radio antenna...to increase the effective range of WiFi, is a signal (pun intended) that value pricing is just a few steps away. Rob demonstrates his mastery of the following topics, the understanding of topological maps, db signal loss over distance, firewalls, NAT, and routing as they pertain to WiFi. For those readers who just want to hook up a wireless 802.11b router and configure their network, this book covers that very well. The book's scope covers the Apple AirPort Base Station and also Linux networks. Also the need for channel separation and bridging of networks for roaming purposes is described. Then there is the section on the types of external antennas and how to build one from the earlier mentioned Pringles can. Obviously, wireless brings a whole new set of questions to the security aspect of wireless networks. Rob explains some techniques that should help and provides urls to other community efforts to help find additional resources and support. See NoCat...as an example of the latter. Appendix This part of the book includes a section on calculating the loss of signal strength over distances from 0.5 to 20.0 miles! Also provides links to community wireless sites and FCC Part 15 Rules governing the spectrum that 802.11b occupies. Index Complete and adequate. General Book Comments It is my opinion that many neighborhoods could employ the suggested solutions and bypass the big telco's and ISP's to bring unrestricted Internet access to small neighborhood WAN's at a cost lower or equal to what cable and DSL providers offer. Rob has done an excellent job in presenting this new technology. He takes the time to explain technical details in ways easy for the reader to understand. Rating 10 out of 10. This rating is my own personal value system and as such is very subjective. I think a rating of 5 means I would read finish reading a book. A rating of 10 would indicate I had trouble putting a book down and have no complaints at all about it.
|
|
|
10 of 11 people found the following review helpful:
5.0 out of 5 stars
Relevant, accessible, and thin, December 30, 2002
Building Wireless Community Networks has three attributes I look for in a technology book:- It's relevant
- It's accessible
- It's thin For those who are unfamiliar with wireless networking, or those who are relatively new to it, this is a good introduction to the technology. For me, the book did a fine job of relating my knowledge of wired networking to that of wireless, showing how one is an extension of the other. It's a practicle introduction to how microwave technology enables wireless networking, and I found it to be a good primer on microwave communications in general. The book's truer purpose, though, is as an introduction to the community of wi-fi enthusiasts, and to how this medium can (and is) being used to provide data bandwidth to places unheard of just a few years ago. I found the sections on basic, networking configuration (ch. 3, I believe) a bit slow, but still a decent refresher. For someone who has never set up a network before, this section would be more informative. More useful were the sections on wireless tools, microwave antenna and cabling technology (with a wonderful discussion of signal loss that can occur at various points in the connection, and why), and site surveys and topology factors. Also, the discussion on the Pringles can antenna was amusing. This book is for you if:
- You want a basic tutorial on wireless networking technology
- You have worked with wired networks, but are unfamiliar with RF and microwave communications
- You have an interest in setting up your own wireless community network (free or otherwise) This book may not be for you if:
- You are looking for an in-depth discussion of the network protocols that are the basis of wi-fi
- You enjoy lugging around 500-page technical books that (also) only have about 80 pages or real, useful content.
|
|
|
15 of 18 people found the following review helpful:
2.0 out of 5 stars
Not Intended for Practical Implementation, January 23, 2005
I have a T1 line to my home in the country and wanted to provide my neighbors within a mile or so with a share of my bandwidth. What I lacked was a knowledge of what components to buy, what the practical differences are between components, ways to throttle bandwidth to individual neighbors, how to prevent bandwidth theft by neighbors who are not sharing in the cost of the T1 line, which components are "safe buys," what is involved in installation, what other skills are required, and where I can buy the needed components.
The title of this book started with "Building," so I hoped that it would be a practical book that focused on actually building a wireless network. Unfortunately, I was disappointed because the "building" is at an academic level, not a practical, commercial one. The requirements I have above are treated poorly, if at all. So, while this book may be great for people looking for a starter in becoming engineers or for professors looking for an academic textbook, it is less satisfactory for consumers looking to build a community network. Some specifics by book chapter:
1. Wireless Community Networks: history, some problems for ISPs, and what happens if the shift goes from the ISP to the individual network member. Nothing practical here.
2. Defining Project Scope: It doesn't. Instead, it talks about protocols such as 802.11, 802.11a, .... The "Hardware Requirements" section doesn't take you from your needs to what you'll require. It simply says that you will require hardware based on your needs and says you'll need to survey your site.
3. Network Layout: Is a bottom-up chapter with buzz words: Layer n, BSS, IBSS, DHCP, DNS, NAT, WEP, more on protocols, and security. This chapter fails to take one from problems to solutions. But, now you know the terms when you talk about actually building a WiFi network.
4. Using Access Points: Defines a lot of them, not how they solve your problems.
5. Host-Based Networking: The preface says this chapter provides a step-by-step guide to building your own access points using Linux and some hardware. But, the chapter itself just defines some terms and has a few scripts. It's not a step-by-step guide from my perspective, and it doesn't define the problem that is being solved nor who would want this.
The chapters that follow follow the pattern of bottom-up thinking: defining terms and disconnected ideas. This book would have been much better if it lived up to its title and had chapters that dealt with different end-user needs (different kinds of networks), and how each of these problems would be solved, providing answers to the requirements I listed above in my first paragraph.
I give this book not one star, but two because it does provide some terminology that serves as a starting point with wireless vendors for the discussion of actually building a wireless community network.
|
|
|
Most Recent Customer Reviews
|
by Bruce Potter
See all Editorial Reviews
