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Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
Chapter 37 Configuring Inspection of Basic Internet Protocols
SMTP and Extended SMTP Inspection
Fields
• Name—When adding an ESMTP map, enter the name of the ESMTP map. When editing an ESMTP
map, the name of the previously configured ESMTPS map is shown.
• Description—Enter the description of the ESMTP map, up to 200 characters in length.
• Security Level—Select the security level (high, medium, or low).
–
Low—Default.
Log if command line length is greater than 512
Log if command recipient count is greater than 100
Log if body line length is greater than 1000
Log if sender address length is greater than 320
Log if MIME file name length is greater than 255
–
Medium
Obfuscate Server Banner
Drop Connections if command line length is greater than 512
Drop Connections if command recipient count is greater than 100
Drop Connections if body line length is greater than 1000
Drop Connections if sender address length is greater than 320
Drop Connections if MIME file name length is greater than 255
–
High
Obfuscate Server Banner
Drop Connections if command line length is greater than 512
Drop Connections if command recipient count is greater than 100
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
–
MIME File Type Filtering—Opens the MIME Type Filtering dialog box to configure MIME file
type filters.
–
Default Level—Sets the security level back to the default level of Low.
• Details—Shows the Parameters and Inspections tabs to configure additional settings.
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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