Cisco Cisco Email Security Appliance X1050 Guía Del Usuario
12-18
Cisco AsyncOS 9.5 for Email User Guide
Chapter 12 Anti-Virus
Updating Virus Definitions
Confirm that the actions taken match your configuration for Repaired Message Handling (the
settings in
settings in
For more information obtaining virus files for testing anti-virus scanning, see:
http://www.eicar.org/anti_virus_test_file.htm
This page provides 4 files for downloading. Note that it may be difficult to download and extract these
files if you have a client-side virus scanning software installed.
files if you have a client-side virus scanning software installed.
Updating Virus Definitions
Related Topics
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About Retrieving Anti-Virus Updates via HTTP
Sophos and McAfee frequently update their virus definitions with newly-identified viruses. These
updates must be passed to your appliance.
updates must be passed to your appliance.
By default, the Cisco appliance is configured to check for updates every 5 minutes. For the Sophos and
McAfee anti-virus engines, the server updates from a dynamic website.
McAfee anti-virus engines, the server updates from a dynamic website.
The system does not timeout on updates as long as the update is actively downloading to the appliance.
If the update download pauses for too long, then the download times out.
If the update download pauses for too long, then the download times out.
The maximum amount of time that the system waits for an update to complete before timing out is a
dynamic value that is defined as 1 minute less than the anti-virus update interval (defined on Security
Services > Service Updates). This configuration value aids appliances on slower connections while
downloading large updates that may take longer than 10 minutes to complete.
dynamic value that is defined as 1 minute less than the anti-virus update interval (defined on Security
Services > Service Updates). This configuration value aids appliances on slower connections while
downloading large updates that may take longer than 10 minutes to complete.
Configuring Update Server Settings
You can configure virus update settings via the Security Services > Service Updates page. For example,
you can configure how the system receives anti-virus updates and how often it checks for updates. For
more information about these additional settings, see
you can configure how the system receives anti-virus updates and how often it checks for updates. For
more information about these additional settings, see
Monitoring and Manually Checking for Anti-Virus Updates
You can use the Security Services > Sophos or McAfee page or the
antivirusstatus
CLI command to
verify the appliance has the latest anti-virus engine and identity files installed, and to confirm when the
last update was performed.
last update was performed.
You can also manually perform updates.