NAT Overview
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Alcatel-Lucent
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CLI Configuration Guide
S
TATIC
NAT
Static NAT allows systems in a private network with unregistered IP address
appear to have a registered IP address with a one-to-one mapping. It is
particularly useful when a device needs to be accessible from outside the
network. In specific circumstances, Static NAT, also called inbound mapping,
allows external devices to initiate connections to computers on the private
domain.
Note:
In case of a firewall being used in conjunction with Static NAT, a filter or policy on the
firewall must exist for each address map to allow inbound traffic.
D
YNAMIC
NAT
Allow hosts on the private network to start 'conversation' to the external network
with the inbound replies being automatically forwarded to the initiating host. The
NAT device achieves this by building a mapping table between the internal and
external hosts on the fly based on the traffic flow.
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