From: Alice Bryson (abryson@bytefocus.com)
Date: Mon Mar 13 2006 - 01:22:31 EST
hi there
I agree with Zdmja, NMAP do about 7 tcp port test, 1 udp port test
and 1 tcp seq num test. One could not only change TTL to cheat NMAP.
I am not exactly know what you intend to do. If you want NMAP
false positive report your OS, you could start a firewall. If you
want to do other thing, tell me.
2006/3/13, Bojan Zdrnja <bojan.zdrnja@gmail.com>:
> Mohamed,
>
> On 3/12/06, Mohamed Abdel Kader <mak.pen@gmail.com> wrote:
> > Hello pen-testers,
> >
> > I was wondering what are the required changes to the TCP/IP stack to make
> > nmap report the OS as Linux instead of Windows. A simple example would be to
> > changing the TTL value from the default windows 128 to 64 through the
> > registry.
>
> It's not that simple. Nmap will do multiple tests on the machine.
> Find the file nmap-os-fingerprints on your system - it contains
> description of test results that match every OS nmap can guess. What
> you have to do is make your Linux machine give back results so they
> match with some other system.
>
> I also suggest reading this:
> http://www.insecure.org/nmap/nmap-fingerprinting-article.html
>
> Bojan
>
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