Demystifying the IPsec Puzzle Description:

Demystifying the IPsec Puzzle review:
5 stars (You must own this book if you want to learn this topic..) - If you want to learn or research on this topic, this is the book you should read. In adddition, the writing style is excellent!
5 stars (Outstanding) - This book is simply outstanding. IPsec is a complicated topic, but this book explains it clearly while not losing any of the essential detail. As one previous reviewer said, you might need to read it more than once to really get a good grasp of the subject, but it is only 250 pages long (and small enough and light enough to carry in your laptop case pocket)!Don't get this book if you are looing for a 'Dummies..' kind of approach, but definately do get it if you really want to understand IPsec.So, five stars from me for the hardback edition (sounds like the electronic edition might be too much trouble [from what I read in a previous review]!).
1 stars (Don't buy this!!!) - Do not buy this book!!! I got royally hosed on this. Since it's in E-Book format, you download it to your computer. You cannot print it, and you cannot transfer it to another machine. I wanted to rebuild my machine, but I can't because I will lose the $... book. They give you instructions on how to transfer the book to a new computer, but the publisher says to talk to Adobe, and Adobe says to talk to the publisher. I've been running around in circles!!! Supposedly the software recognizes the layout and config of your hard drive, so if you change it, the book will not be readable. What a rip-off. I understand completely that the publisher doesn't want people passing around free copies of their book, but hey, now I'm stuck not being able to change my computer, upgrade my hard drive, etc. If you don't care, and the $... is expendible to you, then go for it, but don't ever plan on changing your system. I hope you never need more hard drive space.