Which of the following is NOT typically considered a functionality of an intrusion detection system?

An intrusion detection system (IDS) is primarily designed to monitor network or system activities for malicious actions or policy violations. Its main functions include detecting intrusions, logging information for analysis, and sending alerts about suspicious activities.

Blocking malicious traffic, while it might seem beneficial, is not a core function of an IDS. Instead, that role is typically filled by an intrusion prevention system (IPS), which actively takes measures to block or prevent intrusions based on the information it gathers. An IDS is focused on detection and monitoring, rather than on direct response to threats in real-time by blocking them.

Therefore, identifying that blocking traffic is not typically considered a function of an IDS is key to understanding its operational boundaries and ensuring clarity between its role compared to that of other security solutions like an IPS.