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.
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.