METHOD AND SYSTEM FOR REDUCING THE FALSE ALARM RATE OF NETWORK INTRUSION DETECTION SYSTEMS

摘要

According to one embodiment of the invention, a method for reducing the falsealarm rate of network intrusion detection systems includes receiving an alarmindicating a network intrusion may have occurred, identifying characteristicsof the alarm, including at least an attack type and a target address, queryinga target host associated with the target address for an operating systemfingerprint, receiving the operating system fingerprint that includes theoperating system type from the target host, comparing the attack type to theoperating system type, and indicating whether the target host is vulnerable tothe attack based on the comparison.