Which of the following statements about the Port Scanning feature of SmartDefense is TRUE?

Which of the following statements about the Port Scanning feature of SmartDefense is TRUE?

A.
When a port scan is detected, only a log is issued ?never an alert.

B.
The Port Scanning feature actively blocks the scanning, and sends an alert to SmartView
Monitor.

C.
A typical scan detection is when more than 500 open inactive ports are open for a period of 120
seconds.

D.
Port Scanning does not block scanning, it detects port scans with one of three levels of
detection sensitivity