ZyXEL Communications 3.1 User Manual

Chapter 12 Virtual Servers

ZyWALL (ZLD) CLI Reference Guide

This is an example of making an HTTP (web) server in the DMZ zone accessible from the Internet 
(the WAN zone). You will use a public IP address of 1.1.1.2 on the ge2 (or wan1 on USG 200 and 
lower models) interface and map it to the HTTP server’s private IP address of 192.168.3.7. 

Public Server Example Network Topology

Follow the following steps for the setting.

Configure Address object

Create two address objects. One is named DMZ_HTTP for the HTTP server’s private IP address of 
192.168.3.7. The other one is named ge2_HTTP for the ge2 (wan1) public IP address of 1.1.1.2.

Configure NAT

You need a NAT rule to send HTTP traffic coming to IP address 1.1.1.2 on ge2 (wan1) to the HTTP 
server’s private IP address of 192.168.3.7. Use the following settings:

• This NAT rule is for any HTTP traffic coming in on ge2 (wan1) to IP address 1.1.1.2.
• The NAT rule sends this traffic to the HTTP server’s private IP address of 192.168.3.7 (defined 

in 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”.

Configure firewall

Create a firewall rule to allow HTTP traffic from the WAN zone to the DMZ web server.

Now the public can go to IP address 1.1.1.2 to access the HTTP server.

DMZ

192.168.3.7

1.1.1.2

WAN

Router# configure terminal

Router(config)# address-object DMZ_HTTP 192.168.3.7

Router(config)# address-object ge2_HTTP 1.1.1.2

Router(config)# 

Router(config)# ip virtual-server To-VirtualServer-WWW interface ge2 original-ip 

ge2_HTTP map-to DMZ_HTTP map-type port protocol tcp original-port 80 mapped-port 80

Router(config)# 

Router(config)# firewall insert 1 

Router(firewall)# description To-VirtualServer-WWW 

Router(firewall)# from WAN 

Router(firewall)# to DMZ 

Router(firewall)# destinationip DMZ_HTTP 

Router(firewall)# service HTTP 

Router(firewall)# exit

Router(config)# write

Router(config)#