Preventing and Detecting Intrusion Summary

Preventing and Detecting Intrusion Summary

Having recognized the various hazards that hackers offer and being willing to take cybersecurity seriously, the organization must now understand how to identify and stop system intrusions. This summary provides insights into detecting and preventing intrusion in IT systems. By understanding these concepts, the company can strengthen the defense mechanisms for the network to protect confidential information.

Penetration Testing

Penetration testing involves simulating real-world attacks on a system or application to identify vulnerabilities. Penetration tests are used to identify vulnerabilities by analyzing network defenses such as firewalls, honeypots, and intrusion detection systems (IDS). Firewalls prevent unauthorized entry into a network by monitoring traffic in and out of the system (Liang & Kim, 2022). A penetration test checks whether it can block malicious traffic or unauthorized access. On the other hand, a honeypot is a cybersecurity mechanism that sets up a virtual trap to lure attackers. Penetration test reveals the tactics used by hackers and vulnerabilities in systems by observing how attackers interact with the honeypots. Consistently, IDS is a network security technology that monitors network traffic for malicious activities. Penetration tests check whether the IDS can effectively identify the simulated attacks and raise appropriate attacks.

Firewall Circumvention

Firewalls are a critical part of the security layer, but hackers have developed various techniques to circumvent them to gain unauthorized access to the network. Hackers employ social engineering techniques like email phishing to manipulate people into revealing sensitive information. Hackers can also bypass firewalls through the openings created by poorly configured firewalls. Port scanning is also employed to identify open ports in a network and entry points that may not be filtered by the firewall. Techniques such as packet fragmentation can also be used to make malicious traffic look legitimate to bypass firewall protocols.

IDS Evasion and Countermeasures

IDS is critical in detecting and notifying organizations concerning malicious activities in their systems. However, hackers might manage to evade intrusion detection mechanisms through various techniques. Techniques such as denial of service, fragmentation, and protocol layer attacks are used. Various measures can be adopted to counter these IDS evasions. This includes regular updates of detection rules and signatures, protocol analysis, and anomaly detection

Webserver Hacking and Detection

Web servers are a common target for attackers attempting to exploit vulnerabilities. In penetration testing, web server hacking is important in accessing the security posture of a system. Penetration testers target web servers to identify vulnerabilities that hackers could potentially exploit. Real-time feedback from the hackers’ perspective from the webserver hacking provides the IT team valuable training.

Web Server Architectures and Vulnerabilities

Web server architecture is the design and structure of a web server and outlines how it delivers the web content. Single-tier architecture is a traditional architecture where everything runs on a single server. In this architecture, denial of service is a vulnerability that could be exploited by overwhelming the server with traffic. The second is the client-server architecture, which is also referred to as two-tier architecture. Improper authentication mechanisms can be a vulnerability exploited to grant unauthorized access. Also, cross-site scripting could be employed by hackers to inject malicious scripts into web applications (Krishnaraj et al., 2023). Lastly, there is the Three-tier architecture that consists of three interconnected layers. Inadequate security configuration could be a vulnerability.

Intrusion Detection Tools and Techniques

Various tools and techniques can be used to detect intrusion on web servers. Such techniques may include log analysis, which analyzes server logs to spot suspicious activities; web application firewalls, which filter malicious firewalls; intrusion detection systems, which monitor traffic and alert on unusual traffic; vulnerability scanners, which scan for known traffic on web servers; and honeypots.

References

Krishnaraj, N., Madaan, C., Awasthi, S., Subramani, R., Avinash, H., & Mukim, S. (2023). Common vulnerabilities in real-world web applications. CEUR Workshop Proceedings, 3374, 9–22. https://www.linkedin.com/in/harsh-avinash/

Liang, J., & Kim, Y. (2022). Evolution of Firewalls: Toward Securer Network Using Next-Generation Firewall. 2022 IEEE 12th Annual Computing and Communication Workshop and Conference, CCWC 2022, 752–759. https://doi.org/10.1109/

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The work you’ve done for your clients at the flooring company has helped them realize they have not taken cybersecurity seriously enough. Now that they realize the threats from hackers are more serious than they thought, they want to learn more about how to detect intruders in their systems to try to prevent problems from happening because of a hack.

Preventing and Detecting Intrusion Summary

Write a 2- to 3-page summary explaining how to prevent and detect intrusion in IT systems. Include a dedicated section for each of the following items:

Describe how penetration tests provide insight into network vulnerabilities through testing network defenses, such as firewalls, honeypots, and IDS.
Explain how and why hackers circumvent firewalls.
Explain IDS evasion and countermeasures to IDS evasion techniques.
Describe the role of web server hacking and detection in penetration testing.
Identify 3 web server architectures and provide an example of a vulnerability for each.
Identify tools and techniques used to detect intrusion web servers.