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port snipe functionality
From: Toni Ruottu <toni.ruottu () iki fi>
Date: Sat, 29 Jan 2011 15:49:48 +0200

hey,

I am still trying to snipe ports outside the current target
specification. This is particularly useful for scanning distributed
systems that do not have a standard port, but rather provide a
discovery service that return (host, port) pairs for the involved
nodes. In such cases it is natural to add discovery services as scan
targets, and use port scripts to retrieve lists of (host, port) pairs
from the service and store them into the registry.

Problems arise when one goes on to write follow-up scripts that read
the stored (host, port) pairs from the registry in order to scan them.
Scanning the nodes would require an nmap.snipe(host, port) function
that would allow scanning a port outside the original target
specification. When combined with postrule scripts, sniping could be
used to scan complex systems consisting of multiple nodes.

As far as I've been able to find out such snipe function does not
currently exist. Implementing one on the NSE side would require
reimplementing big parts of the port scanning functionality on the NSE
side. Also it seems to be currently impossible to reports port state
and version information outside the original target specification. My
impression is. Thus implementing a snipe function on the NSE does not
seem feasible. How much effort would it take to implement this on the
C side?

  --Toni
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