What is the primary function of an intrusion detection system (IDS)?

An intrusion detection system (IDS) is primarily designed to monitor network traffic for suspicious activity. Its main role is to identify potential threats, such as unauthorized access attempts or malicious activities, by analyzing patterns in network traffic and system behavior. When an IDS detects an irregularity, it generates alerts that can inform network administrators of possible security breaches or attempts to exploit vulnerabilities.

This function is crucial in maintaining the integrity and security of a network, as it enables early detection of threats, allowing for a quicker response to prevent or mitigate damage. Unlike other options that suggest active prevention or management tasks, the primary focus of an IDS remains on the detection and notification of suspicious activities, making it a vital component in a comprehensive security strategy.