Cisco Cisco Email Security Appliance C170 用户指南
9-72
Cisco AsyncOS 8.5 for Email User Guide
Chapter 9 Using Message Filters to Enforce Email Policies
Attachment Scanning
Figure 9-4
Edit IronPort Image Analysis Settings
Step 3
Configure the settings for image analysis sensitivity. The default sensitivity setting of 65 is
recommended.
recommended.
Step 4
Configure the settings for Clean, Suspect, and Inappropriate verdicts.
When you configure the value ranges, ensure that you do not overlap values and that you use whole
integers.
integers.
Step 5
Optionally, configure AsyncOS to bypass scanning images that do not meet a minimum size requirement
(recommended). By default, this setting is configured for 100 pixels. Scanning images that are smaller
than 100 pixels can sometimes result in false positives.
(recommended). By default, this setting is configured for 100 pixels. Scanning images that are smaller
than 100 pixels can sometimes result in false positives.
You can also enable image analysis settings from the CLI via the
imageanalysisconfig
command:
test.com> imageanalysisconfig
IronPort Image Analysis: Enabled
Image Analysis Sensitivity: 65
Verdict Ranges: Clean (0-49), Suspect(50-74), Inappropriate (75+)
Skip small images with size less than 100 pixels (width or height)
Choose the operation you want to perform:
- SETUP - Configure IronPort Image Analysis.
[]> setup
IronPort Image Analysis: Enabled
Would you like to use IronPort Image Analysis? [Y]>