nmap howto an Ethical Hacker's View

Update!

This content appears to have been plagarized in large part from the online resources of James Messer: Secrets of Network Cartography: A Comprehensive Guide to nmap

As its name implies, nmap is a network mapping utility. Provide nmap with a TCP/IP address, and it will identify any open "doors" or ports that might be available on that remote TCP/IP device. The real power behind nmap is the amazing number of scanning techniques and options available! Each nmap scan can be customized to be as blatantly obvious or as invisible as possible. Some nmap scans can forge your identity to make it appear that a separate computer is scanning the network, or simulate multiple scanning decoys on the network! This document will provide an overview of all nmap scanning methods, complete with packet captures and real-world perspectives of how these scans can be best used in enterprise networks.

The Ethical Hacker Network - Nmap from an Ethical Hacker's View Part 1

describe[s] Nmap from the viewpoint of a hacker and at the same time give a clear, step-by-step method of attaining a good level of proficiency. After completing this 2 Part Series and having practiced the techniques described, one should not only be able to sit at a "roundtable" discussion with advanced security professionals and "hold their own" in a discussion concerning Nmap, but also utilize this great tool in their own network