I'd like to go further on this subject and post this excerpt from
nmap_wrapper.c
(into nessus-plugins). It speaks for itself
/*
* That's a *FAKE* progress bar. Its purpose is just
* to show users that nmap is still alive, not to
* show the level of completion of a scan
*
* This is update "MacOS-style", meaning that
* n% of the remaining chart is updated every
* three seconds
*
* Thanks to Michel Arboi for this suggestion
*
* Q: "is not it lame to have a fake progress bar ?"
* A: "Yes it is. However, nmap offers no convienent way to have a
* real progress bar, because of the retries, and users would
* send me panicked emails saying that 'nmap does not work' because
* the progress bar was not updated. If you can come up with
* a better solution, let me know"
*/
[...]
static void
update_progress_bar()
{
...
Cristobal Soto wrote:
>
> I'd add this to the faq too.
> I went through this issue some time ago, and my only conclusion was the
> progress bar fills proportionally to the # of ports being scanned
> relative to the time each port is probed. Of course this is an
> approximation and when the scan goes slow, the bar fills up long before
> the end of the nmap scan.
>
> best rgds
> Cristobal
>
> Michel Arboi wrote:
> >
> > Tony Howlett <[EMAIL PROTECTED]> writes:
> >
> > > I am using nessus in doing some assessments of large networks. I
> > > have noticed that nessus often "hangs" at the end of the nmap portion
> > > of the test for long periods of time.
> >
> > [A question for the FAQ?]
> > There is no way to know how many % of the work have already been done
> > by nmap. So the slider is fake: every X seconds, it moves of Y % of
> > the remaining space. So it slows down little by little.
> > This trick comes from MacOS.
> > The problem is that X is too small or Y too big.
> >
> > --
> > mailto:[EMAIL PROTECTED]
> > GPG Public keys: http://michel.arboi.free.fr/pubkey.txt
> > http://michel.arboi.free.fr/ http://arboi.da.ru/
> > FAQNOPI de fr.comp.securite : http://faqnopi.da.ru/
>
> --
> Cristobal Soto Y.
> ICSA.cl - The e-risk security company - http://www.icsa.cl
--
Cristobal Soto Y.
ICSA.cl - The e-risk security company - http://www.icsa.cl
