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Cisco ASA Series Firewall ASDM Configuration Guide
Chapter 5 Configuring Twice NAT (ASA 8.3 and Later)
Configuring Twice NAT
Step 8 (Optional) Configure NAT options in the Options area.
a. Enable rule —Enables this NAT rule. The rule is enabled by default.
b. (For a source-only rule) Translate DNS replies that match this rule—Rewrites the DNS A record in
DNS replies. Be sure DNS inspection is enabled (it is enabled by default). You cannot configure
DNS modification if you configure a destination address. See the “DNS and NAT” section on
page 3-31 for more information.
c. Description—Adds a description about the rule up to 200 characters in length.
Step 9 Click OK.