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Question

Difficulty: EasyNAT and PAT Implementation

When configuring Network Address Translation (NAT) on a gateway router, which term specifically describes the private IP address assigned to an internal host before any address translation occurs?

  1. Inside localAnswer
  2. B
    Inside global
  3. C
    Outside local
  4. D
    Outside global

Answer

Inside local is the term used to describe the private IP address assigned to an internal network host before translation.
The term 'inside local' refers to the IP address assigned to a host on the internal network before NAT performs any address translation. This is typically a private IPv4 address from RFC 1918 ranges.

Step-by-Step Solution

1
Identify the location of the host (internal vs. external).
The host is located on the internal network, requiring an 'Inside' designation.
Standard NAT terminology uses 'Inside' for devices located within the private organizational network boundary.
2
Determine whether the address is pre-translation or post-translation.
The address is prior to translation, making it a 'Local' address.
'Local' addresses represent un-translated addresses as seen from inside the network.

Key Concept

NAT Address Terminology (Inside Local, Inside Global, Outside Local, Outside Global)
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Topics

NAT and PAT Implementation

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