ZyXEL VMG1312-B10A VMG1312-B10A-EU01V1F データシート

 Chapter 11 Network Address Translation (NAT)

VMG1312-B10A User’s Guide

The following table describes the fields in this screen.

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

Address Mapping: Add/Edit

Network Setting > NAT > Address Mapping

Add new rule

Click this to create a new rule.

Set

This is the index number of the address mapping set.

Local Start IP

This is the starting Inside Local IP Address (ILA).

Local End IP

This is the ending 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 blank for One-to-One 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 the Many-to-One mapping type. 

Global End IP

This is the ending Inside Global IP Address (IGA). This field is blank for One-to-One and 
Many-to-One mapping types.

Type

This is the address mapping type.

One-to-One: This 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.

Many-to-One: This mode maps multiple local IP addresses to one global IP address. This is 
equivalent to SUA (i.e., PAT, port address translation), the Device's Single User Account 
feature that previous routers supported only. 

Many-to-Many: This mode maps multiple local IP addresses to shared global IP addresses.

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.