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intrusion prevention system (IPS)

Definitions:

  Intrusion Prevention System: Software that has all the capabilities of an intrusion detection system and can also attempt to stop possible incidents.
Sources:
CNSSI 4009-2015 from NIST SP 800-94

  A system that can detect an intrusive activity and can also attempt to stop the activity, ideally before it reaches its targets.
Sources:
NIST SP 800-82 Rev. 2 under Intrusion Prevention System (IPS)

  System which can detect an intrusive activity and can also attempt to stop the activity, ideally before it reaches its targets.
Sources:
NISTIR 7711 under Intrusion Prevention System