IDS & IPS Security Mechanisms

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Questions and Answers

What is the main purpose of packet filtering in network security?

Examining the context of network packets to determine legitimate connections
Limiting or blocking network traffic from specific sources or to specific destinations
Analyzing packets in real-time and blocking those that match known attack signatures or patterns (correct)
Monitoring for abnormal behavior and taking action if deviations from the normal baseline are detected

What distinguishes stateful inspection from other techniques in network security?

Analyzing packets in real-time and blocking those that match known attack signatures or patterns
Limiting or blocking network traffic from specific sources or to specific destinations based on predefined security policies
Monitoring for abnormal behavior and taking action if deviations from the normal baseline are detected
Examining the context of network packets to determine whether they are part of an established and legitimate connection or represent a potential threat (correct)

What is the primary function of behavioral analysis in network security?

Limiting or blocking network traffic from specific sources or to specific destinations based on predefined security policies
Analyzing packets in real-time and blocking those that match known attack signatures or patterns
Examining the context of network packets to determine legitimate connections
Monitoring for abnormal behavior and taking action if deviations from the normal baseline are detected (correct)

Which statement best describes deep packet inspection (DPI) in network security?

<p>Is a form of computer network packet filtering that examines the data part (and possibly also the header) of a packet as it passes an inspection point, searching for protocol non-compliance (A)</p> Signup and view all the answers

What are the three main techniques used in deep packet inspection (DPI)?

<p>"Analyzing packets in real-time and blocking those that match known attack signatures or patterns", "Examining the context of network packets to determine legitimate connections", "Monitoring for abnormal behavior and taking action if deviations from the normal baseline are detected" (B)</p> Signup and view all the answers

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