The IP sweep threshold interval is in microseconds. The default
threshold value is 5000. The valid threshold range is 1000-1000000.
By using the default settings, if a remote host sends ICMP traffic
to 10 addresses in 0.005 seconds (5000 microseconds), the
security device flags this as an address sweep attack, and
rejects all further ICMP echo requests from that host for
the remainder of the specified threshold time period. The
device detects and drops the tenth packet that meets the address
sweep attack criterion.
This attribute holds the UDP attack alarm threshold.