AnIntrusion Prevention System (IPS)is a network security tool designed to continuously monitor network traffic and actively block or prevent malicious activity in real time. Unlike an Intrusion Detection System (IDS), which only alerts on suspicious activity, an IPS is inline and can take automated preventive actions such as dropping malicious packets or blocking traffic from offending IPs.
Intrusion Detection System (IDS)only detects and alerts but does not block traffic.
Packet Sniffercaptures and analyzes network packets for monitoring but lacks automated response capabilities.
SIEM (Security Information and Event Management)aggregates logs and alerts but does not directly block traffic.
TheSplunk Cybersecurity Defense Analyst Study Guideexplains that IPS devices are critical in defense-in-depth strategies to prevent intrusions before they cause damage.
[Reference:, Splunk Cybersecurity Defense Analyst Study Guide, Chapter 2: Network Security Technologies, Splunk Docs: Intrusion Prevention Systems, NIST Special Publication 800-94: Guide to Intrusion Detection and Prevention Systems, , ]
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