IT Certification

NAT, Three methods:
1, Static NAT (one-on-one)
2, dynamic NAT (many-to-many)
3, port multiplexer PAT (many-to-one)
1, static configuration
(1) configure the external interface IP address
(2) internal interface IP address configuration
(3) in-house local and global address internal address translation between
router (config) # ip nat inside source static local-ip global-ip
(4), including the opening of the external NAT interface
router (config) [...]

Feature History
Release  Modification
12.2(4)T
This feature was introduced.
12.2(4)T2
 Support for the Cisco 7500 series routers was added.
This document describes the NAT—Ability to Use Route Maps with Static Translations feature. It includes the following sections:
Feature Overview
Supported Platforms
Supported Standards, MIBs, and RFCs
Configuration Tasks
Configuration Examples
Command Reference
Feature Overview
Previous to this feature, route mapping was supported only with dynamic Network Address Translation (NAT) [...]