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Cisco ASA 5500 Series Getting Started Guide
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Chapter 8 Scenario: DMZ Configuration
Configuring the Adaptive Security Appliance for a DMZ Deployment
Step 9 Click Apply to complete the adaptive security appliance configuration changes.
Configuring Static PAT for Public Access to the DMZ Web Server
(Port Forwarding)
The DMZ web server needs to be accessible by all hosts on the Internet. This
configuration requires translating the private IP address of the DMZ web server
to a public IP address, which allows outside HTTP clients to access the web server
without being aware of the adaptive security appliance. In this scenario the DMZ
web server shares a public IP address with the outside interface of the adaptive
security appliance (209.165.200.225).
To map the real web server IP address (10.30.30.30) statically to a public IP
address (209.165.200.225), perform the following steps:
Step 1 In the Configuration > Firewall > NAT Rules pane, click the green + (plus) icon
and choose and choose Add “Network Object” NAT Rule.
The Add Network Object dialog box appears.
Step 2 Fill in the following values:
• In the Name field, enter the object name. Use characters a to z, A to Z, 0 to
9, a period, a dash, a comma, or an underscore. The name must be 64
characters or less.
• From the Type drop-down list, choose Host.
• In the IP Address field, enter the real IP address of the DMZ web server. In
this scenario, the IP address is 10.30.30.30.
• (Optional) In the Description field, enter a description of the network object
(up to 200 characters in length).
Note If the NAT section is hidden, click NAT to expand the section.
Step 3 Check the Add Automatic Translation Rules check box.
Step 4 From the Type drop-down list, choose Static.
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