100-150 Question 271
Select 3A network administrator notices unusual login attempts to a corporate server from an external IP address. Which foundational security concepts should the administrator prioritize to mitigate this issue?
- A
Implement multi-factor authentication (MFA) for server access.
- B
Enable data encryption for all files on the server.
- C
Review and tighten access control policies.
- D
Deploy a firewall to block the external IP address.
Show answer and explanation
Correct answers: A, C, D
Explanation
Foundational security concepts such as multi-factor authentication (MFA), access control, and perimeter defense (e.g., firewalls) are essential to mitigate unauthorized login attempts. By implementing MFA, reviewing access policies, and blocking malicious IPs with a firewall, the administrator can significantly reduce the threat. Data encryption, while important, does not directly address login-related threats in this scenario.
- A. Correct.
Implementing multi-factor authentication (MFA) adds an additional layer of security, making it harder for attackers to gain access even if they have valid credentials.
- B. Incorrect.
While encrypting data is a critical security measure, it does not directly address the issue of unauthorized access attempts or mitigate login threats.
- C. Correct.
Reviewing and tightening access control policies ensures that only authorized users can access the server, reducing the risk of unauthorized login attempts.
- D. Correct.
Deploying a firewall to block the malicious external IP address can help prevent further login attempts from that source.