For an inside host in Cisco NAT, which term refers to its address after translation (the globally routable address representing the inside host)?

Difficulty: Easy

Correct Answer: Inside global

Explanation:


Introduction / Context:
Correctly identifying NAT address roles prevents configuration mistakes and speeds troubleshooting. For inside-to-outside sessions, the inside host is represented on the public side by a translated address.



Given Data / Assumptions:

  • Inside host initiates traffic.
  • We need the term for its post-translation address.
  • Standard Cisco NAT vocabulary is used.


Concept / Approach:
Inside global is the translated, globally routable address that represents the inside host to the outside world. Inside local is the private, pre-translation address. Outside local/global describe the destination host as seen inside or globally.



Step-by-Step Solution:

Identify that we want the inside host's address after translation.Map to Cisco terms: inside + global => post-translation public-facing address.Hence, the correct answer is inside global.


Verification / Alternative check:
Run 'show ip nat translations' and note the 'inside global' column showing the public address bound to the inside host.



Why Other Options Are Wrong:
Inside local: Pre-translation. Outside local/global: Terms for the destination host, not the source inside host.



Common Pitfalls:
Assuming “global” always equals public Internet. It indicates the address visible outside the NAT boundary, which is typically public, but could be another routed domain.



Final Answer:
Inside global

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