Private Address Space

• RFC1918

  • 10/8 10.0.0.0 - 10.255.255.255
  • 172.16/12 172.16.0.0 - 172.31.255.255
  • 192.168/16 192.168.0.0 - 192.168.255.255

• Motivation

  • saves public address space
  • allows for more flexibility

• Suitable when

  • hosts do not require access to other networks
  • hosts need limited access to outside services
    • can use application layer G / W (fire walls, NAT)

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