What is the difference between an Intrusion Detection System and an Intrusion Prevention System?

An Intrusion Detection System (IDS) and an Intrusion Prevention System (IPS) are distinct components of network security, each serving unique roles in protecting data and systems from unauthorized access or attacks. The key difference lies in their functionality: an IDS focuses on monitoring and analyzing network traffic for suspicious activity and potential threats. It generates alerts when it detects anomalies, allowing security personnel to investigate and respond appropriately. In contrast, an IPS goes a step further by not only detecting threats but also actively preventing them from causing harm. When an IPS detects a potential intrusion, it can automatically take actions such as blocking traffic from the suspicious source or dropping malicious packets, effectively thwarting attacks in real time.

Understanding this distinction is crucial for effective cybersecurity management. While both systems work to enhance overall security, the IPS provides a proactive layer by taking immediate action against identified threats, thereby offering a more comprehensive defense strategy. The other options either suggest that IDS and IPS are the same, misrepresent their functionalities, or incorrectly imply that they are focused solely on enhancing password security, which is not their primary function.