Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

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Cisco AsyncOS 8.5.5 for Email Security User Guide
 
Chapter 16      File Reputation Filtering and File Analysis
  Configuring File Reputation and Analysis Features
Procedure 
Step 1
Create a policy quarantine to hold messages with attachments that have been sent for analysis. 
Set the quarantine to release messages after about 2 hours. For this release, there is no automatic action 
based on file analysis results. 
Step 2
Identify messages processed by the Advanced Malware Protection filters with an X-Header: 
a.
Select Mail Policies > Incoming Mail Policies
b.
click the link in the Advanced Malware Protection column of a policy. 
c.
Select the option to Include an X-header with the AMP results in messages
d.
Submit your changes.
Step 3
Create a content filter to quarantine messages based on the X-Header value. 
A. Create the condition: 
a.
Select Mail Policies > Incoming Content Filters
b.
Click Add Filter
c.
Click Add Condition
d.
Click Other Header
e.
For Header Name, enter 
X-Amp-File-Uploaded
f.
For Header Value, select Contains and enter 
true
g.
Click OK
B. Create the action: 
a.
Click Add Action.
b.
Select Quarantine
c.
Select the quarantine you created above. 
d.
Click OK
Step 4
Submit your changes. 
Step 5
Add the content filter to the same incoming mail policy you configured above. 
Step 6
Submit and commit your changes. 
X-Headers for File Reputation and Analysis 
You can use X-Headers to mark messages with actions and results of message processing steps. You tag 
messages with X-Headers in mail policies, then use content filters to choose handling options and final 
actions for these messages. 
For a configuration example, see 
Values are case-sensitive.