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Network based IDS

Network based IDS definition

Network based intrusion detection system, or NIIDS refers to a security system that monitors network traffic for suspicious activity and alerts network administrators when potential intrusions are detected. NIDS can be implemented as a hardware or software solution and can monitor both incoming and outgoing network traffic.

See also: computer network defense

How does network based IDS work:

  • Traffic analysis. The IDS analyzes the traffic to detect suspicious activity or signs of an attack. This involves comparing traffic against known attack patterns or rules.
  • Alert generation. When the IDS detects something suspicious, it generates an alert or notification to the security team.
  • Response. The security team reviews the alert and takes appropriate action, such as blocking the offending traffic or investigating the incident.
  • Updates. The IDS is regularly updated with new attack patterns and rules to ensure that it can detect the latest threats.
  • Reporting. The IDS provides reporting and analysis capabilities to help security teams understand network activity and identify potential security risks.

Network based IDS examples

  • Snort, a popular open-source NIDS that provides real-time traffic analysis and packet logging.
  • Suricata is an open-source NIDS that can detect and prevent a wide range of security threats.
  • Cisco Firepower is a network security app that includes intrusion detection and prevention capabilities, as well as advanced threat detection and mitigation features.
  • IBM Security Network Intrusion Prevention System can detect and prevent a wide range of threats, including malware, botnets, and network-based attacks.