Chapter 10 Network Address Translation (NAT)

Use this screen to change your ZyXEL Device’s address mapping settings. Click Advanced Setup > NAT > IP Address Mapping to open the following screen.

Figure 38 Advanced Setup > NAT > IP Address Mapping

The following table describes the fields in this screen.

Table 25 Network > NAT > Address Mapping

LABEL

DESCRIPTION

IP Address Mapping

 

 

Address

The rules configured in this screen apply to this PVC.

Mapping Rule

 

 

 

Rule Index

Select the rule’s index number from the drop-down list box.

 

 

Rule Type

Choose the port mapping type from one of the following.

 

One-to-One: This mode maps one local IP address to one public IP address. Note

 

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

 

Many-to-One: This mode maps multiple local IP addresses to one public IP

 

address. This is equivalent to the Single IP feature that previous ZyXEL routers

 

supported only.

 

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

 

public IP addresses.

 

Many-to-Many No Overload: This mode maps each local IP address to unique

 

public IP addresses.

 

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

 

the NAT to be accessible to the outside world.

 

 

Local Start IP

This is the starting local IP address. Local IP addresses are N/A for Server port

 

mapping.

 

 

Local End IP

This is the end local IP address. If your rule is for all local IP addresses, then enter

 

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.

 

 

Public Start IP

This is the starting public IP address. Enter 0.0.0.0 here if you have a dynamic IP

 

address from your ISP.

 

 

Public End IP

This is the ending public IP address. This field is N/A for One-to-One, Many-to-One

 

and Server mapping types.

 

 

 

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P-660R-T1 v3 User’s Guide