100-140 Question 237
Single answerA user reports that they are unable to access a web application hosted on the internet. Upon investigation, you discover that the application's IP address and port are being blocked by the firewall. What is the most likely purpose of the firewall in this scenario, and how might it be impacting connectivity?
- A
The firewall is preventing unauthorized access to the internal network by blocking unapproved traffic.
- B
The firewall is misconfigured and unintentionally blocking all outbound traffic.
- C
The firewall is designed to monitor and log all traffic but does not impact connectivity.
- D
The firewall is encrypting the user's traffic, which is causing the issue.
Show answer and explanation
Correct answer: A
Explanation
Firewalls are security devices that monitor and control network traffic based on predetermined security rules. In this scenario, the firewall is enforcing its rules by blocking traffic to the specified IP address and port, which is its intended behavior. This demonstrates how firewalls can impact connectivity to ensure network security.
- A. Correct.
Correct. The primary purpose of a firewall is to control incoming and outgoing network traffic based on security rules, often blocking unapproved or potentially harmful traffic.
- B. Incorrect.
Incorrect. While misconfiguration could cause issues, the scenario describes the firewall intentionally blocking the application's IP and port, which aligns with its purpose of enforcing security policies.
- C. Incorrect.
Incorrect. Firewalls enforce security policies and can block or allow traffic; they do not merely monitor traffic without impacting connectivity.
- D. Incorrect.
Incorrect. Firewalls do not encrypt traffic; their function is to filter traffic based on predefined rules.