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Static NAT

Static NAT

(also static network address translation)

Static NAT definition

A technique for routing traffic from an external static public address to an internal private (unregistered) IP address.

A static NAT (network address translation) creates a one-to-one relationship between the two IP addresses, making the device, server, or computer linked to the unregistered IP address accessible over the World Wide Web. At the same time, static NAT hides the details of the internal private network from external users, protecting devices from discovery and attack.

Static NAT vs other NAT techniques

  • Dynamic NAT maps a private IP to a public IP chosen from a pool of IP addresses. This pool is held in a NAT table at the end NAT router. Dynamic NAT is that a large number of internal IPs can connect to the internet when just a small number of public IP addresses are available to the service provider. Public IP addresses are assigned to internal IPs on a first come, first served basis.
  • PAT (Port Address Translation) is a type of dynamic NAT that can map multiple private IP addresses to a single public IP address.

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