Intrusion Detection System (IDS) methods of detection primarily involve monitoring network traffic or system activities to identify potential security breaches or malicious activities. One method commonly used by IDS is signature-based detection. This technique involves comparing observed events or patterns in network traffic or system logs against known signatures or patterns of known attacks or anomalies. When a match is found, the IDS raises an alert to notify administrators of a potential security incident.
Another method of detection used by Intrusion Detection and Prevention Systems (IDPS) includes anomaly-based detection. This approach establishes a baseline of normal behavior for network traffic, system processes, or user activities. The system then monitors for deviations from this baseline that may indicate suspicious or malicious behavior. Anomaly-based detection is effective for identifying previously unknown threats or zero-day attacks that do not match known signatures.
Signature-based detection is one of the most common methods used by IDS. It involves creating signatures or patterns that represent known malicious activities, such as specific byte sequences in network traffic or system logs. These signatures are updated regularly to reflect new threats and vulnerabilities. When the IDS detects a match between observed network traffic or system activity and a signature in its database, it generates an alert to notify administrators of a potential security incident.
Detection ID,
IDS, refers to the unique identifier assigned to a detected security event or alert. Each alert generated by the IDS is assigned a detection ID, which helps administrators track and manage security incidents effectively. The detection ID typically includes information such as the type of attack or anomaly detected, the timestamp of the event, and other relevant details to aid in incident response and mitigation.
An IDS sensor works by monitoring network traffic or system activities in real-time or near real-time. The sensor collects data from network packets, system logs, or other sources and analyzes this data using detection methods such as signature-based or anomaly-based detection. When the sensor identifies suspicious or malicious activity that matches predefined criteria, it generates alerts or notifications to alert administrators or security personnel. IDS sensors can be deployed at various points in a network, such as at network gateways, switches, or servers, to provide comprehensive coverage and early detection of potential security threats.