An intrusion prevention system (IPS) is a network security tool that continuously monitors network traffic for malicious activity and takes action to prevent it, such as reporting, blocking, or dropping it. An IPS is different from an intrusion detection system (IDS), which only detects and alerts about threats, but does not stop them.
A firewall is a device or software that filters network traffic based on predefined rules, but it does not analyze the traffic for anomalies or signatures of known attacks. A VPN is a virtual private network that creates a secure tunnel between two endpoints, but it does not prevent intrusions from within the network or from compromised endpoints.
References: What is an Intrusion Prevention System (IPS)? | FortinetWhat is an Intrusion Prevention System? - Palo Alto Networks An administrator needs to ensure an access switch is sending the appropriate logs to the network monitoring server.