Cisco Cisco Email Security Appliance C160 Betriebsanweisung

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Cisco AsyncOS 8.5.6 for Email User Guide
 
Chapter 16      File Reputation Filtering and File Analysis
  Overview of File Reputation Filtering and File Analysis
If the file is sent for analysis: 
Files are sent using SSL/TLS. 
Analysis normally takes minutes, but may take longer. 
Information about every file analyzed is added to the reputation database. File analysis results 
contribute to the reputation of the file. 
For information about verdict updates, see 
.
Which Files Can Be Evaluated and Analyzed? 
The reputation service evaluates most file types. File type identification is determined by file content and 
is not dependent on the filename extension. 
Some files with unknown reputation can be analyzed for threat characteristics. 
Additional criteria apply, including some that are dynamically determined. For current information, see 
the Release Notes for your AsyncOS version, available from 
FIPS Compliance 
File reputation scanning and file analysis are FIPS compliant.