ZyXEL Communications P-2602HWLNI User Manual

Chapter 10 Network Address Translation (NAT) Screens

P-2602HWLNI User’s Guide

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

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-One and 

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 (i.e., PAT, port address translation), ZyXEL's Single User 

Account feature that previous ZyXEL routers supported only. 
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. 

Modify

Click the edit icon to go to the screen where you can edit the address mapping rule.
Click the delete icon to delete an existing address mapping rule. Note that 

subsequent address mapping rules move up by one when you take this action.

Table 56   Address Mapping Rules (continued)