ZyXEL Communications P-870HW-I User Manual

P-870HW-I1 User’s Guide

Chapter 10 NAT

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The following table describes the fields in this screen. 

Table 63   Network > NAT > Address Mapping > Edit

Type

Choose the port mapping type from one of the following. 
•

One-to-One: One-to-One mode maps one local IP address to one global IP 

address. Note that port numbers do not change for One-to-one NAT mapping 

type.

•

Many-to-One: 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. 

•

Many-to-Many Overload: Many-to-Many Overload mode maps multiple local IP 

addresses to shared global IP addresses. 

•

Many-to-Many 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.

Local Start IP
Local End IP

Enter the range of IP addresses on the LAN port.
Local Start IP is N/A for Server port mapping.
Local End IP is N/A for One-to-one and Server mapping types.
To create a rule for all LAN IP addresses, set Local Start IP to 0.0.0.0 and Local 

End IP to 255.255.255.255.

Global Start IP
Global End IP

This is the corresponding range of IP addresses on the WAN port.
Global Start IP should be 0.0.0.0 if both of the following conditions are satisfied.
•

Your ISP assigns the IP address of your WAN port.

•

The rule is a Many-to-One or Server rule.

Global End IP is N/A for One-to-one, Many-to-One and Server mapping types.

Back

Click this to return to the previous screen without saving any changes.

Apply

Click this to save your changes back to the ZyXEL Device.

Cancel

Click this to begin configuring this screen afresh.