ZyXEL Communications P-793H User Manual

Chapter 28 NAT Setup

P-793H User’s Guide

The first entry is for the Default Server. The following table describes the labels in this 
menu.

The following are some examples of NAT configuration.

In the following Internet access example, you only need one rule where all your ILAs (Inside 
Local addresses) map to one dynamic IGA (Inside Global Address) assigned by your ISP. 

Figure 172   NAT Example 1

Table 113   Menu 15.2: NAT Server Setup

Rule

This field is a sequential value, and it is not associated with a specific rule. The 

sequence is important, however. The ZyXEL Device checks each active rule in 

order, and it only follows the first one that applies.

Start Port

This field displays the beginning of the range of port numbers forwarded by this 

rule.

End Port

This field displays the end of the range of port numbers forwarded by this rule. 

If it is the same as the Start Port, only one port number is forwarded.

IP Address

This field displays the IP address of the server to which packet for the selected 

port(s) are forwarded.