What is the difference between IDS and IPS?

Difference between IDS and IPS and Firewall. The differences between an IDSand a firewall are that the latter prevents malicious traffic, whereas the IDS: PassiveIDS: the IDS only reports that there was an intrusion. Active IDS: the IDS also takes actions against the issue to fix it or at least lessen its impact.

• Intrusion Detection System - A device or application that analyzes whole packets, both header and payload, looking for known events. When a known event is detected a log message is generated detailing the event.
• Intrusion Prevention System - A device or application that analyzes whole packets, both header and payload, looking for known events. When a known event is detected the packet is rejected.