4 nat application, 5 nat mapping types, 4 nat application 16.1.5 nat mapping types – ZyXEL Communications ZyXEL ZyWALL 35 User Manual

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ZyWALL 35 User’s Guide

Chapter 16 Network Address Translation (NAT)

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Figure 141 How NAT Works

16.1.4 NAT Application

The following figure illustrates a possible NAT application, where three inside LANs (logical
LANs using IP Alias) behind the ZyWALL can communicate with three distinct WAN
networks. More examples follow at the end of this chapter.

Figure 142 NAT Application With IP Alias

16.1.5 NAT Mapping Types

NAT supports five types of IP/port mapping. They are:

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