CompTIA Security+ (SY0-401) — Question 1

Sara, the security administrator, must configure the corporate firewall to allow all public IP addresses on the internal interface of the firewall to be translated to one public IP address on the external interface of the same firewall. Which of the following should Sara configure?

Answer options

• A. PAT
• B. NAP
• C. DNAT
• D. NAC

Correct answer: A

Explanation

The correct answer is A, PAT (Port Address Translation), which allows multiple internal IP addresses to be mapped to a single external IP address by using different port numbers. The other options, like NAP (Network Access Protection), DNAT (Destination NAT), and NAC (Network Access Control), do not provide the same functionality for translating multiple internal addresses to one external address.