This course introduces the principles and operation of Network Intrusion Detection Systems (NIDS), focusing on how they monitor, analyze, and detect malicious activities within network traffic. Students will explore key detection techniques, including rule-based, anomaly-based, and hybrid methods, and learn to identify common attacks such as DoS, port scanning, and SQL injection. The course also covers sensor deployment, alert interpretation, and the roles of NIDS operators and managers in maintaining network security. Emphasis is placed on understanding system advantages, limitations, and practical applications in securing modern networks against both known and zero-day threats.

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