What is the primary function of an Intrusion Detection System (IDS)?

The primary function of an Intrusion Detection System (IDS) is to monitor network traffic for suspicious activity. IDS serves as a critical tool in network security, designed to analyze incoming and outgoing traffic and detect patterns that may indicate potential security threats, such as unusual connections, port scans, or known attack signatures. By continuously monitoring the network, an IDS can provide alerts to administrators about potential intrusions, enabling a timely response to mitigate threats.

An IDS compares traffic against established baselines and predefined rules to identify anomalies. This functionality is essential in maintaining the integrity of the network, as it allows organizations to proactively react to potential breaches or attacks before they can cause significant damage.