Cisco Systems NetBIOS Inspection Overview, Select NETBIOS Map, NetBIOS Inspect Map

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Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter47 Configuring Inspection of Basic Internet Protocols
NetBIOS Inspection
NetBIOS Inspection Overview
NetBIOS inspection is enabled by default. The NetBios inspection engine translates IP addresses in the
NetBios name service (NBNS) packets according to the ASA NAT configuration.
Select NETBIOS Map
The Select NETBIOS Map dialog box is accessible as follows:
Add/Edit Service PolicyRule Wizard > Rule Actions > Protocol Inspection Tab >
Select NetBIOS Map
The Select NETBIOS Map dialog box lets you select or create a new NetBIOS map. A NetBIOS map
lets you change the configuration values used for NetBIOS application inspection. The Select NetBIOS
Map table provides a list of previously configured maps that you can select for application inspection.
Fields
•Use the default IM inspection map—Specifies to use the default NetBIOS map.
•Select a NetBIOS map for fine control over inspection—Lets you select a defined application
inspection map or add a new one.
•Add—Opens the Add Policy Map dialog box for the inspection.
Modes
The following table shows the modes in which this feature is available:
NetBIOS Inspect Map
The NetBIOS Inspect Map dialog box is accessible as follows:
Configuration> Global Objec ts > Inspect Maps > NetBIOS
The NetBIOS pane lets you view previously configured NetBIOS application inspection maps. A
NetBIOS map lets you change the default configuration values used for NetBIOS application inspection.
NetBIOS application inspection performs NAT for the embedded IP address in the NetBIOS name
service packets and NetBIOS datagram services packets. It also enforces protocol conformance,
checking the various count and length fields for consistency.
Fields
•NetBIOS Inspect Maps—Table that lists the defined NetBIOS inspect maps.
•Add—Configures a new NetBIOS inspect map.
•Edit—Edits the selected NetBIOS entry in the NetBIOS Inspect Maps table.
•Delete—Deletes the inspect map selected in the NetBIOS Inspect Maps table.
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
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