Chapter 12 Virtual Servers

12.2.2 Tutorial - How to Allow Public Access to a Server

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.

Figure 17 Public Server Example Network Topology

 

 

 

DMZ

 

 

WAN

 

 

 

 

 

192.168.3.7

 

 

 

 

 

1.1.1.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Follow the following steps for the setting.

1Configure 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.

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)#

2Configure 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”.

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)#

3Configure firewall

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

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)#

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

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ZyWALL (ZLD) CLI Reference Guide