Review of Nmap Network Scanning
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I've reviewed dedicated "tool" books before, including titles about Snort, Nessus, and Nagios. NNS dives into the internals of Nmap unlike any other title I've read. Without Nmap author Fyodor as the author, I think any competitor would need to have thoroughly read the source code of the application to have a chance at duplicating the level of detail Fyodor includes in NNS. Instead of just describing how to use Nmap, Fyodor explains how Nmap works. Going even further, he describes the algorithms used to implement various tests, and why he chose those approaches. The "Idle Scan Implementation Algorithsm" section in Ch 5 is a great example of this sort of material. I will probably just refer students of my TCP/IP Weapons School class to this part of NNS when we discuss the technique!
One of the best parts of NNS, mentioned by explained in no other text, is the Nmap Scripting Engine (NSE). Ch 9 is all about NSE, with a brief intro to Lua and excellent documentation of using and building upon NSE. Beyond this groundbreaking material readers will find many examples of Nmap case studies from users. This and other sections help make NNS a practical book, showing how people use Nmap in their environments for a variety of purposes.
NNS is a five star book, and when it's posted at Amazon.com I'll upload this review there. You can learn more about the book at nmap.org/book, and see it in paper at Def Con next month.
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