Chapter 10 Network Address Translation (NAT) Screens

10.6 Address Mapping

Note: The Address Mapping screen is available only when you select Full Feature in the NAT > General screen.

Ordering your rules is important because the ZyXEL Device applies the rules in the order that you specify. When a rule matches the current packet, the ZyXEL Device 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 ZyXEL Device’s address mapping settings, click Network > NAT > Address Mapping to open the following screen.

Figure 83 Address Mapping Rules

The following table describes the fields in this screen.

Table 48 Address Mapping Rules

LABEL

DESCRIPTION

 

 

#

This is the rule index number.

 

 

Local Start IP

This is the starting Inside Local IP Address (ILA). Local IP addresses are N/A for

 

Server port mapping.

Local End IP

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

 

then this field displays 0.0.0.0 as the Local Start IP address and 255.255.255.255

 

as the Local End IP address. This field is N/A for One-to-oneand Server mapping

 

types.

Global Start IP

This is the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if you have a

 

dynamic IP address from your ISP. You can only do this for Many-to-Oneand

 

Server mapping types.

Global End IP

This is the ending Inside Global IP Address (IGA). This field is N/A for One-to-one,

 

Many-to-One and Server mapping types.

 

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P-2602H(W)(L)-DxA User’s Guide