Have you read John's article on scanning via TOR?

http://pauldotcom.com/2009/08/scanning-through-a-tor-network.html


On Wed, Oct 7, 2009 at 12:16 PM, Butturini, Russell <
[email protected]> 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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