Nmap Development mailing list archives

Re: Feature request: scanning an AS


From: John Bond <john.r.bond () gmail com>
Date: Wed, 8 Feb 2012 11:47:23 +0100

Thanks David, Fydoor,

Ill take a look at the script this weekend.  It has been a while since
i looked at it so not sure what the issues could be of the top of my
head

Does the Shadowserver system give you the org name associated with the
AS number
Unfortunately the org dos not seem to be associated with the as
number.  you could take one of the prefixes and do something like the
following.

echo 'origin 128.12.0.0/16' | nc  asn.shadowserver.org 43

however this just dose the same things as
http://nmap.org/nsedoc/scripts/asn-query.html. Ill have a look at some
of the other services which offer this info see if there is a way to
get all info in one request.  Or look at merging this with asn-query
and asn-to-prefix


On 7 February 2012 23:17, Fyodor <fyodor () insecure org> wrote:
On Wed, Sep 07, 2011 at 07:48:58PM +0200, John Bond wrote:

Sorry i just checked and think i updated this all ages ago but forgot
to send it in.  let me know if there is anything else that needs doing
and ill try to respond in less then 5 months

Thanks!  Now that David has checked it into trunk, I tried it out a
bit.  I'm not sure why, but sometimes I get this error:

$ ./nmap --script=asn-to-prefix --script-args asn-to-prefix.asn=32

Starting Nmap 5.61TEST4 ( http://nmap.org ) at 2012-02-07 14:14 PST
Pre-scan script results:
| asn-to-prefix:
|   32
|_    Name or service not known


Other times it works great, though I often see the whitespace issue
that David brought up:


$ ./nmap --script=asn-to-prefix --script-args asn-to-prefix.asn=32

Starting Nmap 5.61TEST4 ( http://nmap.org ) at 2012-02-07 14:14 PST
Pre-scan script results:
| asn-to-prefix:
|   32
|     128.12.0.0/16
|
|     171.64.0.0/14
|_

I made some improvements to the NSEDoc to give more standard example
usage and a non-localhost output example.

Does the Shadowserver system give you the org name associated with the
AS number?  If so, it would be great if you can include that in the
output.

Thanks again for submitting the script--I'm sure many folks will find
it useful!

Cheers,
Fyodor
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