Reviewing NAT
Public IP addresses are routable through the public Internet, whereas private IP addresses (as defined in RFC 1918) are not, and are intended for use within an organization. Because devices within an organization using private IP addresses need to communicate outside of their local networks (Internet/public network), NAT is needed to translate the private IP addresses into Internet-routable IP addresses (that is, public IP addresses). Table 9-3 identifies three types of NAT.
Table 9-3 Types of NAT
|
Type of NAT |
Description (Based on Private to Public IPv4 Address Translations) |
|
Static NAT |
A one-to-one mapping of ... |
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