Local System and Network Access Monitoring

C.

The system that monitors local system operation and local network access for violations of a security policy is host-based intrusion detection (A).

Host-based intrusion detection (HID) is a security technology that monitors activity on a single host or endpoint device, such as a computer or server, to detect unauthorized or malicious behavior. The goal of HID is to identify potential security breaches, such as malware infections, unauthorized access attempts, or policy violations, and alert security personnel so they can respond quickly and appropriately.

HID works by monitoring system events and comparing them to a set of predefined rules or signatures that describe known attack patterns or suspicious behavior. When an event matches a rule or signature, the HID system generates an alert or notification that can trigger an investigation or response.

In contrast to network-based intrusion detection systems (NIDS), which monitor traffic between hosts and devices on a network, HID is focused on activity within a specific device or system. This makes HID an important component of defense-in-depth security strategies, as it can provide granular visibility and control over individual endpoints and help identify security incidents that might be missed by network-based systems.

Some common features of HID systems include:

• Log analysis and event correlation
• File integrity monitoring (FIM)
• Behavioral analysis and anomaly detection
• System and application vulnerability scanning
• Incident response and management capabilities.

In summary, host-based intrusion detection (HID) is a security technology that monitors activity on a single host or endpoint device, such as a computer or server, to detect unauthorized or malicious behavior. HID is an important component of defense-in-depth security strategies and provides granular visibility and control over individual endpoints to help identify security incidents that might be missed by network-based systems.