Which NAT feature redirects communication requests from one address and port to another?

• A. Forwarding
• B. Masquerading
• C. Port Forwarding
• D. Tunneling

Answer: (A)

Port forwarding is the NAT feature that redirects incoming traffic from a specific external address and port to a designated internal address and port. This lets external clients reach a service inside your private network by mapping, for example, external port 80 on the router to an internal server like 192.168.1.10:80.

Masquerading, on the other hand, translates internal addresses to the router’s external address for outbound connections, without directing inbound requests to a chosen internal host. Tunneling encapsulates data to traverse another network, which isn’t about redirecting to a different internal address and port. Simply “forwarding” is too vague in NAT terms, whereas port forwarding precisely defines the redirection you’re asking about.