full-disclosure - Idle scan rediscovered!!!

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Date: Fri May  5 17:49:32 2006
From: blancher at cartel-securite.fr (Cedric Blancher)
Subject: Idle scan rediscovered!!!

Le vendredi 05 mai 2006 ? 12:33 -0400, Tim a ?crit :
> Sorry, I'm having difficulty following some of the details of your
> results.  Are you using the Windows machines as the idle hosts only, or
> is the Ubuntu box also being used as an idle host in some
> configurations?

As standard 2.4/2.6 kernels behaviour is to set DF flag to 1, and IPID
to 0, it's a very bad candidate for an idle host. And sadly, it's no
news that Windows boxes are prone to idle scanning because they have an
incremental IPID generator...

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