ZyXEL Communications AMG1302 User Manual

Chapter 11 Network Address Translation (NAT)

AMG1302/AMG1202-TSeries User’s Guide

See 

 for port numbers commonly used for particular services.

Note: Make sure NAT is activated on the WAN connection before you configure a port 

forwarding rule for it. For the default WAN connection (PVC0), activate NAT in the 

Network Setting > NAT > General screen. For other WAN connections 

(PVC1~PVC7), activate NAT for an individual WAN connection in the Broadband > 

More Connections > Edit screen.

Network Setting > NAT > Port Forwarding

The following table describes the fields in this screen.

Use this screen to add or edit a port forwarding rule. Click the Add new rule button or a rule’s edit 
icon in the Port Forwarding screen to display the screen as shown next.

Network Setting > NAT > Port Forwarding

WAN Interface

Select a WAN connection for which you want to configure a port forwarding rule.

Add new rule

Click this button to add a rule to the table below.

#

This is the rule index number (read-only).

Active

This field indicates whether the rule is active or not.

Clear the check box to disable the rule. Select the check box to enable it.

Service Name

This is a service’s name.

External Start Port  This is the first port number of a port range that incoming service requests may use to 

access the service in your local network.

External End Port 

This is the last port number of a port range that incoming service requests may use to 
access the service in your local network.

Internal Start Port

This is the starting port number that the device translates for the service in your local 
network.

Internal End Port

This is the ending port number that the device translates for the service in your local 
network.

Server IP Address

This is the server’s IP address in your local network.

Modify

Click the edit icon to go to the screen where you can edit the port forwarding rule.

Click the delete icon to delete an existing port forwarding rule. Note that subsequent 
address mapping rules move up by one when you take this action.