Which NAT technique translates internal private addresses to public addresses for Internet access?

Which NAT technique translates internal private addresses to public addresses for Internet access?

• A. NAT
• B. Masquerade
• C. Gateway
• D. Firewall

Answer: (A)

Translated private addresses to public ones to access the Internet is the job of NAT. Network Address Translation takes packets from devices inside a private network and rewrites their source IPs to the router’s public IP, creating a mapping so responses can return correctly. This sharing of a single public address by multiple internal hosts is exactly what enables Internet access from a private network. Masquerade is a type of NAT that uses the router’s current public IP, often when that IP is dynamic. It’s a specific method within NAT, not the general concept itself. Gateway and Firewall aren’t NAT techniques—the former is a device/role for routing, and the latter is for security filtering.

Translated private addresses to public ones to access the Internet is the job of NAT. Network Address Translation takes packets from devices inside a private network and rewrites their source IPs to the router’s public IP, creating a mapping so responses can return correctly. This sharing of a single public address by multiple internal hosts is exactly what enables Internet access from a private network.

Masquerade is a type of NAT that uses the router’s current public IP, often when that IP is dynamic. It’s a specific method within NAT, not the general concept itself. Gateway and Firewall aren’t NAT techniques—the former is a device/role for routing, and the latter is for security filtering.