On Sat, 11 Sep 2010 18:32:31 +0530, jai said: > NMAP is detected by Snort and othr IDS, is not possible to have fool proof
You *do* realize that out in the real world, an NMAP scan is very likely to not actually be noticed and cared about, right? If you got a security analyst out of bed every time Snort detected an nmap scan at 3AM, very soon you'll have a sleep-deprived analyst who won't be worth shit when a *real* attack happens. Often, you can use that "this attack is detected" feature against the site under attack. A lot of black hats will intentionally launch a whole mess of nmap and nessus scans from zillions of throw-away zombies, just so their *real* attack can fly under the wire.
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