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Nmap From an Ethical Hacker's Point of View
ddonzal notes a new tutorial that introduces Nmap from the viewpoint of an ethical hacker. (Part 1 of 2 parts is up now.) The author is Kirby Tucker, who writes: "After completing this 2 Part Series and having practiced the techniques described, one should not only be able to sit at a 'roundtable' with advanced security professionals and 'hold their own' in a discussion concerning Nmap, but also utilize this great tool in protecting their own network."
It's sad how true that statement is. It's sadder still that someone moderating thought it was funny rather than true...
There are two kinds of fool One says 'This is old therefore good' Another says 'This is new therefore better'- Dean Ing
The man page for nmap is more detailed than their paraphrasing of it. Some of the article is flat out wrong.
Since there's no overhead of a TCP handshake, the UDP scan is inherently less "noisy."
Yeah right.
If you don't have nmap installed, just go here - http://insecure.org/nmap/man/