CompTIA Network+ (N10-009) — Question 335

A network administrator is setting up a firewall to protect the organization's network from external threats. Which of the following should the administrator consider first when configuring the firewall?

Answer options

• A. Required ports, protocols, and services
• B. Inclusion of a deny all rule
• C. VPN access
• D. Outbound access originating from customer-facing servers

Correct answer: A

Explanation

The correct answer is A because understanding the required ports, protocols, and services is crucial for establishing effective firewall rules that allow legitimate traffic while blocking malicious attempts. Options B, C, and D are important considerations but should come after ensuring that the basic traffic needs of the network are met.