Re: Scanning external-lan computer, no results?

["Doug Nordwall" <raleel@gmail.com>]

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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