Networking
Configuring DMZ
Cisco ISA500 Series Integrated Security Appliances Administration Guide 142
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Figure1 Example DMZ with One Public IP Address for WAN and DMZ
In this scenario, the business has one public IP address, 209.165.200.225, which is
used for both the security appliance’s public IP address and the web server’s
public IP address. The administrator configures the configurable port to be used
as a DMZ port. A firewall rule allows inbound HTTP traffic to the web server at
172.16.2.30. Internet users enter the domain name that is associated with the IP
address 209.165.200.225 and can then connect to the web server. The same IP
address is used for the WAN interface.