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Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter 47 Configuring Inspection of Basic Internet Protocols
SMTP and Extended SMTP Inspection
Drop Connections if body line length is greater than 1000
Drop Connections and log if sender address length is greater than 320
Drop Connections and log if MIME file name length is greater than 255
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MIME File Type Filtering—Opens the MIME Type Filtering dialog box to configure MIME file
type filters.
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Customize—Opens the Add/Edit ESMTP Policy Map dialog box for additional settings.
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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:
MIME File Type Filtering
The MIME File Type Filtering dialog box is accessible as follows:
Configuration > Global Objects > Inspect Maps > ESMTP > MIME File Type Filtering
The MIME File Type Filtering dialog box lets you configure the settings for a MIME file type filter.
Fields
• Match Type—Shows the match type, which can be a positive or negative match.
• Criterion—Shows the criterion of the inspection.
• Value—Shows the value to match in the inspection.
• Action—Shows the action if the match condition is met.
• Log—Shows the log state.
• Add—Opens the Add MIME File Type Filter dialog box to add a MIME file type filter.
• Edit—Opens the Edit MIME File Type Filter dialog box to edit a MIME file type filter.
• Delete—Deletes a MIME file type filter.
• Move Up—Moves an entry up in the list.
• Move Down—Moves an entry down in the list.
Modes
The following table shows the modes in which this feature is available:
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
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