ZyXEL p-334 Manual Do Utilizador

Prestige 334 User’s Guide

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Chapter 7 Network Address Translation (NAT) Screens

Ordering your rules is important because the Prestige applies the rules in the order that you 
specify. When a rule matches the current packet, the Prestige takes the corresponding action 
and the remaining rules are ignored. If there are any empty rules before your new configured 
rule, your configured rule will be pushed up by that number of empty rules. For example, if 
you have already configured rules 1 to 6 in your current set and now you configure rule 
number 9. In the set summary screen, the new rule will be rule 7, not 9. Now if you delete rule 
4, rules 5 to 7 will be pushed up by 1 rule, so old rules 5, 6 and 7 become new rules 4, 5 and 6. 

To change your Prestige’s Address Mapping settings, click SUA/NAT, then the Address 
Mapping tab.  The screen appears as shown.

Figure 31   Address Mapping

The following table describes the labels in this screen.

Table 25   Address Mapping

Local Start IP

This refers to the Inside Local Address (ILA), which is the starting local IP address. If 

the rule is for all local IP addresses, then this field displays 0.0.0.0 as the Local Start 

IP address. Local IP addresses are N/A for Server port mapping.

Local End IP

This is the end Inside Local Address (ILA). If the rule is for all local IP addresses, then 

this field displays 255.255.255.255 as the Local End IP address. This field is N/A for 

One-to-One and Server mapping types.

Global Start IP

This refers to the Inside Global IP Address (IGA). 0.0.0.0 is for a dynamic IP address 

from your ISP with Many-to-One and Server mapping types. 

Global End IP

This is the end Inside Global Address (IGA). 
This field is N/A for One-to-One, Many-to-One and Server mapping types.