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Chapter 9 NAT for IPv4 ((IPv4 NAT provides some benefits:, – NAT conserves…

- - - - Static NAT is particularly useful for web servers or devices that must have a consistent address that is accessible from the Internet, such as a company web server. It is also useful for devices that must be accessible by authorized personnel when offsite, but not by the general public on the Internet.
    - - Dynamic NAT uses a pool of public addresses and assigns them on a first-come, first-served basis.
    - - The destination address (DA) is the outside local address with the service port number added. In this example, the service port is 80, which i
      - AT assigns the first available port number starting from the beginning of the appropriate port group 0–511, 512–1,023, or 1,024–65,535.
- - - - Complicates the use of tunneling protocols, such as IPsec, because NAT modifies values in the headers, causing integrity checks to fail.
- - - - ip nat inside source static 192.168.11.99 209.165.201.5
    - - ip nat inside
    - - ip nat outside
  - - - ip nat inside
    - - ip nat outside
  - - - ip nat inside
    - - ip nat outside