What is the BEST approach to limit exploitation of a zero-day vulnerability on a server OS?

What is the BEST approach to limit exploitation of a zero-day vulnerability on a server OS?

• A. Enabling a NIDS
• B. Installing a firewall
• C. Conducting a system reboot
• D. Updating the operating system

Answer: (A)

The best approach to limit the exploitation of a zero-day vulnerability on a server OS is to focus on implementing a Network Intrusion Detection System (NIDS). A NIDS is designed to monitor network traffic for suspicious activities and can help identify potential attacks before they successfully exploit a vulnerability. By detecting unusual patterns associated with the exploitation of known vulnerabilities, including zero-day vulnerabilities, the NIDS can alert administrators to take preventive measures. While other options may offer some level of security, they do not directly address the immediate threat posed by a zero-day vulnerability. For example, installing a firewall can be beneficial for controlling incoming and outgoing traffic but may not be effective against sophisticated attacks that exploit zero-day vulnerabilities. Conducting a system reboot does not inherently provide any security benefits related to the ongoing risk of exploitation, and although updating the operating system is critical for overall security hygiene, it may not be possible to apply an update before an attack occurs if the zero-day vulnerability is not publicly documented or patched. Thus, a NIDS provides an immediate and proactive approach to detect and respond to potential exploits as they occur.

The best approach to limit the exploitation of a zero-day vulnerability on a server OS is to focus on implementing a Network Intrusion Detection System (NIDS). A NIDS is designed to monitor network traffic for suspicious activities and can help identify potential attacks before they successfully exploit a vulnerability. By detecting unusual patterns associated with the exploitation of known vulnerabilities, including zero-day vulnerabilities, the NIDS can alert administrators to take preventive measures.

While other options may offer some level of security, they do not directly address the immediate threat posed by a zero-day vulnerability. For example, installing a firewall can be beneficial for controlling incoming and outgoing traffic but may not be effective against sophisticated attacks that exploit zero-day vulnerabilities. Conducting a system reboot does not inherently provide any security benefits related to the ongoing risk of exploitation, and although updating the operating system is critical for overall security hygiene, it may not be possible to apply an update before an attack occurs if the zero-day vulnerability is not publicly documented or patched. Thus, a NIDS provides an immediate and proactive approach to detect and respond to potential exploits as they occur.