Intrusion Detection Systems (IDS) are designed to monitor network and system activities for malicious activities or policy violations. The characteristics of IDS include:
Real-time Monitoring: IDS continuously observes network traffic and system logs in real-time to detect any suspicious activity promptly.
Alert Generation: When potential threats are identified, IDS generates alerts to notify system administrators or security teams.
Logging and Reporting: It maintains detailed logs of all monitored activities, which can be used for forensic analysis and compliance reporting.
Detection Methods: IDS employs various detection methods such as signature-based detection, anomaly-based detection, and heuristic-based detection to identify threats.
Signature-based Detection: This method looks for known attack patterns or signatures in network traffic or system logs.
Anomaly-based Detection: This method identifies deviations from normal or expected behavior.
Heuristic-based Detection: This method uses rules and algorithms to identify potentially malicious activities based on known attack techniques.
Network-based and Host-based: IDS can be deployed as network-based (NIDS) or host-based (HIDS).
Passive and Active: Some IDS systems are passive, only monitoring and logging, while others are active, taking corrective actions like blocking traffic.
For cloud environments, services like Tencent Cloud's Security Center offer intrusion detection capabilities integrated into a broader security solution, providing real-time threat detection and response tailored to cloud infrastructure needs.