Chapter 12 Network Address Translation (NAT) Screens

The following table describes the labels in this screen.

Table 24 Address Mapping Rules

LABEL

DESCRIPTION

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.

 

 

Type

1-1: One-to-one mode maps one local IP address to one global IP address. Note

 

that port numbers do not change for the One-to-one NAT mapping type.

 

M-1: Many-to-One mode maps multiple local IP addresses to one global IP address.

 

This is equivalent to SUA (in other words, PAT, port address translation), ZyXEL's

 

Single User Account feature.

 

M-M Ov (Overload): Many-to-Many Overload mode maps multiple local IP

 

addresses to shared global IP addresses.

 

MM No (No Overload): Many-to-Many No Overload mode maps each local IP

 

address to unique global IP addresses.

 

Server: This type allows you to specify inside servers of different services behind

 

the NAT to be accessible to the outside world.

 

 

Back

Click Back to return to the NAT Mode screen.

 

 

12.7 Editing an Address Mapping Rule

To edit an address mapping rule, click the rule’s link in the NAT Address Mapping Rules screen to display the screen shown next.

Figure 48 Address Mapping Rule Edit

 

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P-660RU-T v2 User’s Guide