this is because most computers on the internet are protected in some
fashion. Many of them have a firewall in front of them. This will cause your
scan to come back with few or no results.
It is generally considered impolite at the very least to scan someone else's
computer. Most places will consider it an attack. Some will even prosecute.
In some rare cases, it can cause actual harm, including loss of power,
destruction of property, and (one would hope not, but you never know) loss
of life. I have personally flooded (with water) a building with a nessus
scan, and that was against computers I was authorized to scan. It is
extremely important to only run nessus scans against computers you are
authorized to do so.
I would check out some of the documentation available at
http://www.nessus.org/documentation/ particularly the Introduction to nessus
listed on that page.
On 1/30/07, Michele Costantino <m.costantino@tin.it> wrote:
I've tryed a lot of "internet connected" computer (even another pc
connected
via modem to internet), but after some seconds, i get the classic "no
vulnerabilities found"; instead if i scan a local pc (via lan) it tooks
some
time, and i get the correct report.
Any info on why i cannot scan other computers?
Sorry for my english!
PS:
For the question about internet explorer,i've found a solution:
regsvr32 scan.dll
And the error has gone away!
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--
Doug Nordwall
Unix, Network, and Security Administrator
Noise proves nothing. Often a hen who has merely laid an egg cackles as if
she laid an asteroid. -- Mark Twain
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