Intrusion Detection Systems

This lesson covers intrusion detection systems (IDS). There are two types:
  • Network based
    • Monitors traffic on a network segment
    • Computer or network appliance with NIC in promiscuous mode
    • Sensors communicate with a central management console
  • Host-based IDS
    • Small agent programs that reside on individual computers
    • Detects suspicious activity on one system, not a network segment
  • IDS components consist of:
    • Sensors
    • Analysis engine
    • Management console
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