Nmap Development: Re: [PATCH] Bugfix to random target generation

[Fyodor <fyodor () insecure org>]

On Sun, Nov 23, 2008 at 12:41:35PM +0000, Jack Grahl wrote:
> The patch below fixes what appears to be an error in the function
> ip_is_reserved(). The test which has been removed returns true for all
> IP addresses of the form *.255.255.255. Either this is a logical error
> and the intention was to remove 255.255.255.255 as the comment seems
> to indicate, or it was intended to remove all these addresses.
Hi Jack.  Good point.  I've removed the *.255.255.255 addresses from
ip_is_reserved() as you suggest.  I also removed this:

  /* believe it or not, 204.152.64.0/23 is some bizarre Sun proprietary
   * clustering thing */
  if (i1 == 204 && i2 == 152 && (i3 == 64 || i3 == 65))
    return 1;

That has been there more than 6 years and there is no guarantee that
the supposed issue still exists or (even if it does) that it will in
the future.  If someone knows a good reason to filter out these
addresses, speak up.  Otherwise I'll leave them out of the function
(and thus allow their selection during -iR).

Cheers,
-F

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