Cisco ASA 5505 Getting Started Manual page 77

Chapter 6 Scenario: DMZ Configuration
Configure Port Address Translation.
Step 4
Because there is only one public IP address, it is necessary to use Port Address
Translation to translate the IP address of the DMZ web server to the public IP
address (IP address of the Outside interface) of the adaptive security appliance.
To configure Port Address Translation, perform the following steps:
a.
b.
c.
d.
78-18003-02
Check the Enable Port Address Translation check box.
Click the TCP Protocol radio button.
In the Original Port field, enter 80.
In the Translated Port field, enter 80.
Configuring the Security Appliance for a DMZ Deployment
ASA 5505 Getting Started Guide
6-23