An Intrusion Detection System (IDS) monitors network activities to detect security violations. It analyses data across multiple layers of the OSI model.
Key Features:
- Real-time monitoring
- Pattern recognition
- Anomaly detection
- Alert generation
- Log analysis
Types of IDS:
- Network-based IDS
- Host-based IDS
- Signature-based IDS
- Anomaly-based IDS
IDS helps organisations identify and respond to security threats promptly.