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Chapter 17 - Cisco’s Network Address Translation

Cisco & IP Addressing
Louis D. Rossi, Louis R. Rossi and Thomas Rossi
  Copyright © 1999 The McGraw-Hill Companies, Inc.

Answers
  17.1: An inside local address is typically an address chosen from the private addresses defined by the InterNIC. This address will not go out into the public and will be translated into an inside global registered address.
  17.2: An outside global address is a public registered address that will be mapped to an inside local address.
  17.3: The access list defines what private local addresses can be translated into public global addresses.
  17.4: When an ISP is changed, new public IP addresses need to be assigned. These new addresses can be configured on a router or routers but hosts need not be reconfigured.
  17.5: Overload is a feature of NAT that allows for a many-to-few mapping. Many local private addresses can be mapped to a few public addresses.

 


 
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