Assume You Are A Network Administrator For Your Internal Net

Assume You Are A Network Administrator Your Internal Network Has Appl

Assume you are a network administrator. Your internal network has application servers that are accessed by inbound traffic from the Internet. You are considering several strategies. The strategy you select should provide significant control over user access. You must also ensure that all data passing into the internal network is properly evaluated before access is granted.

Integrity of data is the top priority. You are considering security through obscurity, defense in depth, and diversity of defense. Answer the following question(s): Which firewall security strategy would be the best solution for the scenario? Why?

Paper For Above instruction

In today's interconnected digital landscape, securing internal networks against unauthorized access and data breaches is paramount. For organizations with application servers accessible from the Internet, implementing an effective firewall security strategy is critical. Given the priorities of controlling user access, evaluating all data entering the network, and maintaining data integrity, a layered and comprehensive approach such as defense in depth is most appropriate.

Defense in depth involves deploying multiple security measures at various points within the network to create a robust security posture. This strategy recognizes that no single measure is foolproof; instead, overlapping defenses increase the likelihood of detecting, preventing, or mitigating threats. In the context of securing application servers, this approach includes the use of perimeter firewalls, intrusion detection and prevention systems (IDS/IPS), application firewalls, and regular security audits. Each layer contributes to controlling access, evaluating incoming data, and preserving data integrity.

The principle of controlling user access aligns well with the deployment of network firewalls that enforce strict rules about who can access the internal network. By configuring firewalls to allow only authorized traffic based on IP addresses, ports, and protocols, administrators can exercise significant control over inbound connections. Moreover, implementing application-layer firewalls adds an extra layer of scrutiny, analyzing the actual content of the traffic to prevent malicious payloads from reaching application servers.

Ensuring proper evaluation of data passing into the network is a core aspect of defense in depth. Intrusion detection and prevention systems can monitor for suspicious activities, while antivirus and anti-malware solutions inspect data payloads for known threats. Additionally, data encryption ensures the integrity and confidentiality of sensitive information during transit. Combining these measures helps maintain data integrity and minimizes risks associated with unauthorized access or data corruption.

While security through obscurity—hiding system details—can offer some level of deterrence, it is considered a secondary or supplementary measure. Relying solely on obscurity leaves the network vulnerable if the hidden details are uncovered. Similarly, diversity of defense—using various types of security measures—supports a defense in depth approach but is not sufficient alone without strategic orchestration of multiple layers.

In conclusion, the best firewall security strategy for this scenario is defense in depth. It provides multiple layers of security, rigorous control over access, and comprehensive data evaluation, thereby aligning with organizational priorities of maintaining data integrity and controlling inbound traffic effectively.

References

• Andress, J. (2014). The Basics of Information Security: Understanding the Fundamentals of InfoSec in Theory and Practice. Syngress.
• Moore, J., & Conway, P. (2010). Implementing a Defense in Depth Security Strategy. Journal of Cyber Security & Mobility, 1(2), 45-61.
• Scarfone, K., & Mell, P. (2007). Guide to Intrusion Detection and Prevention Systems (IDPS). NIST Special Publication 800-94.
• Stoneburner, G., Goguen, A., & Feringa, A. (2002). Risk Management Framework. NIST SP 800-37.
• Stallings, W. (2017). Network Security Essentials: Applications and Standards. Pearson.
• Kim, D., & Solomon, M. G. (2016). Fundamentals of Information Systems Security. Jones & Bartlett Learning.
• Northcutt, S., & Novak, J. (2008). Network Intrusion Detection. New Riders Publishing.
• Howard, J., & Cates, W. (2014). Implementing Security in Networked Systems. IEEE Communications Surveys & Tutorials, 16(3), 1340-1360.
• Pfister, R. (2020). Building a Defense-in-Depth Strategy. Cybersecurity Journal, 12(4), 23-29.
• Herbert, M. (2019). Effective Firewall Use in Modern Networks. Security Weekly.