Understanding PORTSCAN DETECTED vs. portscan status

["Tom Yerex" <tomy () telus net>]

I'm having some problems understanding spp_portscan messages.  The two lines
below illustrate two different messages:

spp_portscan: PORTSCAN DETECTED from MY.NET.201.42 (THRESHOLD 4 connections
exceeded in 1 seconds) [**]
spp_portscan: portscan status from MY.NET.206.114: 14 connections across 14
hosts: TCP(0), UDP(14) [**]


In one case, the message contains "PORTSCAN DETECTED", the other has
"portscan status" - what is being communicated here with these two different
messages?

I'm new to snort, and am currently taking a class that discusses network
security.  If anyone can point me in the direction of some reading material
that explains issues like the one above it would be appreciated.

Tom.

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