Nmap Development mailing list archives

Re: [Bug]? -iR <num_hosts> on windows XP generates duplicate targets


From: Fyodor <fyodor () insecure org>
Date: Wed, 23 Apr 2008 20:16:43 -0700

On Thu, Apr 24, 2008 at 01:54:45AM +0000, Brandon Enright wrote:

The solution to this is to drop the re-seeding code starting at line
184 of nbase/nbase_rng.cc (it is redundant and done in main.cc).

Good find.  While the srand() call in nbase_rnd.c shouldn't be
repeating, maybe the main.cc one is clobering it so soon afterward
that tv.tv_usec hasn't changed on Windows.  In other words, Windows
must not be good at updating tv.tv_usec .  Maybe we should just change
one of the srand calls to use a different seeding mechanism.

-F

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