Difficulty: Medium

Average Score: 50%

Which of the following is a security implication of using SDN over traditional methods?

Rationale

Network device configuration can be dynamically adjusted to react to a detected security threat.

Software-Defined Networking (SDN) enables centralized control and programmability of the network, allowing administrators to adapt device configurations in real-time in response to security threats. This dynamic adjustment enhances the network’s resilience and efficiency compared to traditional methods, where manual configuration can delay responses to security incidents.

A (Network device configuration can be dynamically adjusted to react to a detected security threat.) CORRECT

This choice correctly highlights a key advantage of SDN. SDN’s centralized architecture allows rapid adjustments to network configurations, which is crucial for responding to and mitigating security threats as they arise. This capability contrasts sharply with traditional networking methods, where changes may require significant time and effort.

B (Network alerting and reporting is reduced due to lack of integration with analysis tools.) YOUR ANSWER

This option incorrectly suggests a downside of SDN. In fact, SDN can integrate with advanced analysis tools to enhance alerting and reporting capabilities. The centralized control of SDN allows for improved monitoring of network activities, leading to better security insights rather than reduced alerting.

C (Network intrusion detection results in increased false positives or false negatives.) YOUR ANSWER

This choice misrepresents the potential of SDN. While intrusion detection systems can produce false positives or negatives in any environment, SDN can facilitate better detection mechanisms through its programmable nature, potentially reducing these inaccuracies rather than increasing them.

D (Network infrastructure is outsourced to a third-party vendor better suited to maintaining security.) YOUR ANSWER

This statement inaccurately describes SDN's implications. While outsourcing may occur in some scenarios, SDN primarily focuses on enhancing in-house control and programmability of the network rather than shifting responsibility to external vendors.

Conclusion

SDN offers significant advantages over traditional networking in terms of dynamic security responses, allowing for real-time adjustments to network configurations. While there are challenges associated with security monitoring, the programmability and centralized management of SDN promote better integration with security tools and proactive threat management. Thus, the ability to dynamically adjust network configurations stands out as a critical security advantage of SDN.

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