odd nmap results

[gbugbear at gmail.com (Tim Mugherini)]

I know John's article only utilizes one TOR node which might increase the
speed of things.

You could also limit the ports to the ones you are seeing filtered.

Do you have another site (i.e. DR site) that you can proxy your connection
through that has a business class line?

On Wed, Oct 7, 2009 at 3:59 PM, Brian Gray <brianwgray at gmail.com> wrote:

>     It could be the difference between using a business class line vs. a
> consumer line. If it's business class, you may consider contacting the ISP
> about the filtering and their policies on using the line for assessments
> especially if scanning will occur on a regular basis.
>
> On Wed, Oct 7, 2009 at 12:16 PM, Butturini, Russell <
> Russell.Butturini at healthways.com> wrote:
>
> >  Has anyone experienced filtering by an ISP affecting their nmap results?
> > During a recent external port scan of some IP space, using a full connect
> > scan, I discovered that tcp ports 25, 135, 139, 445, and 1025 were all being
> > listed as filtered.  The SMTP port I can understand as this particular
> > provider doesn?t allow SMTP connections to anyone other than their own mail
> > servers, but the windows SMB ports sort of blew my mind, particularly since
> > this provider?s equipment serves as a firewall/router in one device and
> > everything is NATed.  Very frustrating because now I have to clean up the
> > results. Any suggestions how to work around this?
> >
> >
> >
> >
> >
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