N10-005 · Question #880
An organization only has a single public IP address and needs to host a website for its customers. Which of the following services is required on the network firewall to ensure connectivity?
The correct answer is B. Port address translation. Port Address Translation (PAT), also called NAT overload or port forwarding, maps a specific port on a single public IP address to an internal private IP address and port. With only one public IP, the firewall uses PAT to forward incoming traffic on port 80/443 to the internal…
Question
An organization only has a single public IP address and needs to host a website for its customers. Which of the following services is required on the network firewall to ensure connectivity?
Options
- AForwarding proxy
- BPort address translation
- CDMZ port security
- DApplication inspection
How the community answered
(15 responses)- B80% (12)
- C13% (2)
- D7% (1)
Explanation
Port Address Translation (PAT), also called NAT overload or port forwarding, maps a specific port on a single public IP address to an internal private IP address and port. With only one public IP, the firewall uses PAT to forward incoming traffic on port 80/443 to the internal web server. A forwarding proxy is used for outbound client traffic. DMZ port security and application inspection are security features, not address/port mapping services.
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