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Intrusion Detection and Prevention Systems

  • Karen Scarfone
  • Peter Mell

Abstract

Intrusion detection is the process of monitoring the events occurring in a computer system or network and analyzing them for signs of possible incidents, which are violations or imminent threats of violation of computer security policies, acceptable use policies, or standard security practices. An intrusion detection system (IDS) is software that automates the intrusion detection process. An intrusion prevention system (IPS) is software that has all the capabilities of an IDS and can also attempt to stop possible incidents. IDS and IPS technologies offer many of the same capabilities, and administrators can usually disable prevention features in IPS products, causing them to function as IDSs. Accordingly, for brevity the term intrusion detection and prevention systems (IDPSs) is used throughout the rest of this chapter to refer to both IDS and IPS technologies. Any exceptions are specifically noted.

This chapter provides an overview of IDPS technologies. It explains the key functions that IDPS technologies perform and the detection methodologies that they use. Next, it highlights the most important characteristics of each of the major classes of IDPS technologies. The chapter also discusses IDPS interoperability and complementary technologies.

Keywords

Transmission Control Protocol Intrusion Detection Wireless Local Area Network Malicious Activity Suspicious Activity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Karen Scarfone
    • 1
  • Peter Mell
    • 1
  1. 1.Computer Security DivisionNational Institute of Standards and TechnologyGaithersburgUSA

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