Prescribe a Secure Network Infrastructure Plan
Using the NIST Cybersecurity Framework and the organizational knowledge gained in the prior assignments, apply the Identify function to prescribe a secure Network Infrastructure Plan, including a detailed diagram of the recommended security architecture of the network.
Length: 5-6 page paper, including an annotated network diagram and a table listing security weaknesses and recommended mitigations
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In an era dominated by digitization and interconnected networks, securing an organization's network infrastructure is paramount. Cybersecurity breaches have far-reaching consequences, from financial losses to reputational damage and regulatory penalties. Leveraging established frameworks like the NIST Cybersecurity Framework (CSF) provides a structured and strategic approach to designing robust and secure network infrastructures. This paper applies the Identify function of the NIST CSF to prescribe a comprehensive and secure network infrastructure plan. A detailed network diagram will be included, alongside a table listing security weaknesses and recommended mitigations.
The NIST CSF provides a structured method for managing and reducing cybersecurity risks. It comprises five primary functions—Identify, Protect, Detect, Respond, and Recover—designed to help organizations develop robust security postures. The Identify function focuses on understanding the organization’s environment, including its assets, business processes, and potential cybersecurity risks. For a secure network infrastructure, this function aids in evaluating current vulnerabilities, understanding critical components, and aligning security measures with business objectives.
The hypothetical organization in question operates across multiple locations and facilitates remote access using the Internet. Critical components include:
While these components form the backbone of a functional network, several aspects may increase security risks:
The diagram outlines the proposed architecture incorporating the above recommendations. It includes segmented VLANs, NGFWs, secure VPN access points, EDR-integrated endpoints, and centralized monitoring via a Security Information and Event Management (SIEM) system.
(A visual representation would be provided here, showing detailed annotations.)
Security Weakness | Recommended Mitigation | Justification/Standard |
---|---|---|
Lack of network segmentation | Implement VLANs and NGFWs | NIST SP 800-125 |
Outdated VPN protocols | Upgrade to IKEv2/OpenVPN and enable MFA | Verizon DBIR 2023, NIST SP 800-41 |
Weak endpoint security | Deploy EDR solutions | MITRE ATT&CK Framework |
Firewall misconfigurations | Use NGFWs with regular policy audits | NIST SP 800-41 |
Unpatched network devices | Automate firmware and patch management | NIST SP 800-40 |
Applying the Identify function of the NIST CSF reveals that a secure network infrastructure requires a multi-faceted approach. By addressing weaknesses such as segmentation, remote access, and endpoint vulnerabilities, organizations can significantly enhance their security posture. Recommendations grounded in NIST guidelines, supported by industry standards and empirical evidence, ensure a resilient and adaptable network architecture.
This plan not only mitigates current risks but also provides a scalable foundation to accommodate future technological advancements. The proposed network diagram and security improvements align with industry best practices, ensuring robust protection for organizational assets in an ever-evolving threat landscape.
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