ZyXEL Communications wireless n gigabit netusb router User Manual

Chapter 20 NAT

NBG4615 User’s Guide

The following table describes the labels in this screen.

Port forwarding allows you to define the local servers to which the incoming services will be 
forwarded. To change your NBG4615’s port forwarding settings, click Network > NAT > 
Application. The screen appears as shown.

Note: If you do not assign a Default Server IP address in the NAT > General screen, 

the NBG4615 discards all packets received for ports that are not specified in this 

screen or remote management.

Refer to 

 for port numbers commonly used for particular services.

Network > NAT > Application 

Network > NAT > General

NAT Setup

Enable Network 
Address 
Translation

Network Address Translation (NAT) allows the translation of an Internet protocol 
address used within one network (for example a private IP address used in a 
local network) to a different IP address known within another network (for 
example a public IP address used on the Internet). 

Select the check box to enable NAT.

Default Server Setup

Server IP 

Address

In addition to the servers for specified services, NAT supports a default server. A 
default server receives packets from ports that are not specified in the 
Application screen. 

If you do not assign a Default Server IP address, the NBG4615 discards all 
packets received for ports that are not specified in the Application screen or 
remote management.

Apply

Click Apply to save your changes back to the NBG4615.

Cancel

Click Cancel to begin configuring this screen afresh.