Zyxel VMG1312-B10B [195/394] Chapter 11 network address translation nat

Chapter 11 Network Address Translation (NAT)

VMG1312-B10B / VMG1312-B30B Series User’s Guide

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The following table describes the fields in this screen.

11.7.1 Add/Edit Address Mapping Rule

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.

Figure 86 Address Mapping: Add/Edit

Table 62 Network Setting > NAT > Address Mapping

LABEL DESCRIPTION

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.