For an inside host in Cisco NAT, which term refers to its address before translation (the pre-translation address seen on the inside network)?

Introduction / Context:
Cisco NAT terminology distinguishes between inside vs. outside and local vs. global. Correctly naming each address helps you configure rules, interpret translation tables, and resolve connectivity problems.

Given Data / Assumptions:

• The focus is the inside host initiating traffic.
• We want the address before translation, as seen on the inside network.
• Standard Cisco NAT definitions apply.

Concept / Approach:
Inside local = inside host's private address (pre-translation). Inside global = the translated address representing the inside host on the outside. Outside local/global refer to the destination host as seen inside or globally, respectively.

Step-by-Step Solution:

Verification / Alternative check:
Run 'show ip nat translations' during active sessions and locate the 'inside local' column; it lists the inside host's original private address.

Why Other Options Are Wrong:
Outside local/global: These refer to the external destination host. Inside global: This is the post-translation address used on the outside.

Common Pitfalls:
Confusing “local/global” with “private/public.” Local/global is about pre-/post-translation perspective, not necessarily RFC1918 status.

Final Answer:
Inside local