ZyXEL Communications ISG50 User Manual

Chapter 7 General Tutorials

ISG50 User’s Guide

Creating the Address Object for the HTTP Server’s Private IP Address 

Create a host address object named Public_HTTP_Server_IP for the public WAN IP address 1.1.1.1. 

Creating the Address Object for the Public IP Address   

You need a NAT rule to send HTTP traffic coming to IP address 1.1.1.1 on wan1 to the HTTP 
server’s private IP address of 192.168.3.7. In the Configuration > Network > NAT screen, click 
the Add icon and create a new NAT entry as follows. 

• Set  the  Incoming Interface to  wan1.
• Set  the  Original IP to the Public_HTTP_Server_IP object and the Mapped IP to the 

DMZ_HTTP object.

• HTTP traffic and the HTTP server in this example both use TCP port 80. So you set the Port 

Mapping Type to Port, the Protocol Type to TCP, and the original and mapped ports to 80. 

• Keep Enable NAT Loopback selected to allow users connected to other interfaces to access the 

HTTP server (see 

 for details).