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Cisco ASDM User Guide
OL-16647-01
Chapter 24 Configuring Application Layer Protocol Inspection
Inspect Map Field Descriptions
Add—Configures a new DNS inspect map. To edit a DNS inspect map, select the DNS entry in the
DNS Inspect Maps table and click Customize.
Delete—Deletes the inspect map selected in the DNS Inspect Maps table.
Security Level—Select the security level (high, medium, or low).
Low—Default.
DNS Guard: enabled
NAT rewrite: enabled
Protocol enforcement: enabled
ID randomization: disabled
Message length check: enabled
Message length maximum: 512
Mismatch rate logging: disabled
TSIG resource record: not enforced
Medium
DNS Guard: enabled
NAT rewrite: enabled
Protocol enforcement: enabled
ID randomization: enabled
Message length check: enabled
Message length maximum: 512
Mismatch rate logging: enabled
TSIG resource record: not enforced
High
DNS Guard: enabled
NAT rewrite: enabled
Protocol enforcement: enabled
ID randomization: enabled
Message length check: enabled
Message length maximum: 512
Mismatch rate logging: enabled
TSIG resource record: enforced
Customize—Opens the Add/Edit DNS Policy Map dialog box for additional settings.
Default Level—Sets the security level back to the default level of Low.
Modes
The following table shows the modes in which this feature is available: