Which of the following are the main types of intrusion detection systems?

Intrusion Detection Systems (IDS) are essential components in the realm of cybersecurity, as they help monitor and analyze activities to identify potential security breaches or malicious behaviors. When considering the main types of IDS, it's crucial to differentiate between their functionalities and the scope of their monitoring.

The correct answer highlights two prominent types: Network-based IDS (NIDS) and Host-based IDS (HIDS). A Network-based IDS focuses on monitoring the traffic across the network, analyzing data packets, and detecting suspicious activities through patterns or anomalies. This type operates at the network level and is effective for identifying unauthorized access, denials of service, and other network-centric threats.

On the other hand, a Host-based IDS is concerned with monitoring the individual devices or hosts within a network. It assesses system logs, file integrity, and other host-specific metrics to detect malicious activities or policy violations directly on the device itself. This approach allows for a deeper analysis of behaviors that may not be visible through network traffic alone, providing a more granular view of potential intrusions.

By combining insights from both network and host-based systems, an organization can achieve comprehensive security coverage and enhance its incident response capabilities. The distinction between these two types is fundamental for those studying or working in cybersecurity, as each plays