Destination Address After Web Server Response
Question
The address of an inside client is translated from a private address to a public address by a NAT router for access to an outside web server.
What term describes the destination address (client) after the outside web server responds, and before it hits the NAT router?
Answers
Explanations
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A. B. C. D.B.
When an inside client initiates a connection to an outside web server through a NAT router, the NAT router modifies the source address of the packet to its own public address. This process is known as source NAT, or SNAT. Similarly, when the web server responds back to the inside client, the destination address of the packet is modified by the NAT router to the private address of the inside client. This process is known as destination NAT, or DNAT.
The NAT router maintains a mapping table that associates the private IP addresses of the inside clients with the public IP addresses assigned by the NAT router. This mapping table is used to translate the source and destination addresses of packets as they traverse the NAT router.
The term that describes the destination address of a packet after it is translated by the NAT router, but before it reaches the inside client, is "outside global". This is because the destination address is now a globally routable IP address that can be used by devices on the internet to reach the inside client.
To summarize, the answer to the question is D. "outside global" describes the destination address of a packet after it is translated by the NAT router, but before it reaches the inside client. The other terms - inside local, inside global, and outside local - refer to different aspects of NAT translation but do not describe the destination address after the translation.
