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Module 6: NAT for IPv4 - Coggle Diagram
Module 6: NAT for IPv4
NAT Characteristics
A NAT router typically operates at the border of a stub network. A stub network is one or more networks with a single connection to its neighboring network, one way in and one way out of the network.
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NAT has a perceived benefit of adding a degree of privacy and security to a network, because it hides internal IPv4 addresses from outside networks.
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Static NAT
Static NAT uses a one-to-one mapping of local and global addresses. These mappings are configured by the network administrator and remain constant.
Dynamic NAT
Dynamic NAT uses a pool of public addresses and assigns them on a first-come, first-served basis. When an inside device requests access to an outside network, dynamic NAT assigns an available public IPv4 address from the pool.
PAT
Port Address Translation (PAT), also known as NAT overload, maps multiple private IPv4 addresses to a single public IPv4 address or a few addresses
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