On Thu, Oct 05, 2006 at 11:08:02AM -0400, John P. Wilson wrote:
> If scan-delay is zero (which I assume it is by default) then
> I suppose multiple probes can be sent to multiple ports at once,
> right (parallel probing)?
Yes.
> If scan-delay is greater than zero then, as you point out, this
> enforces serialization - only dealing with one probe at a time.
Not exactly true because scan_delay could be smaller than timeout and
next probe can be sent out before giving up waiting for reply to
previous probe.
> Is there ever a case where multiple probes are sent all at once to
> one port?
I don't know of any.
> If no reply is received and timeout expires, and if there are still
> retries to perform, is the probe sent out immediately, regardless of
> what scan-delay is set to?
No, if scan_delay is greater than timeout then the next probe will not
be sent sooner than scan_delay after previous probe was sent.
> Also: must scan-delay be greater than timeout?
No.
Martin Mačok
ICT Security Consultant
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Received on Oct 05 2006
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