What is an intrusion prevention system an intrusion

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What is an Intrusion Prevention System?
Intake II ICT60215 Advanced Diploma of Network Security06/2021V3.0Written Examination13of 25
RTO PROVIDER CODE: 91151CRICOS CODE: 02668FResetting the connectionAs an inline security component, the IPS must work efficiently to avoid degrading networkperformance. It must also work fast because exploits can happen in near real-time. The IPS must alsodetect and respond accurately, so as to eliminate threats and false positives (legitimate packetsmisread as threats).DetectionThe IPS has a number of detection methods for finding exploits, but signature-based detection andstatistical anomaly-based detection are the two dominant mechanisms.Signature-based detectionis based on a dictionary of uniquely identifiable patterns (or signatures)in the code of each exploit. As an exploit is discovered, its signature is recorded and stored in acontinuously growing dictionary of signatures. Signature detection for IPS breaks down into twotypes:1. Exploit-facing signatures identify individual exploits by triggering on the unique patternsof a particular exploit attempt. The IPS can identify specific exploits by finding a match withan exploit-facing signature in the traffic stream2. Vulnerability-facing signatures are broader signatures that target the underlyingvulnerability in the system that is being targeted. These signatures allow networks to beprotected from variants of an exploit that may not have been directly observed in the wild, butalso raise the risk of false positives.

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Virtual private network, Wi Fi, Wireless access point

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