Cisco Cisco Email Security Appliance C650 Guía Del Usuario

Submit and commit your changes. 

Navigate to the Security Services > Service Updates page, and click Edit Update Settings.

Select the check box to enable automatic updates.

Enter an update interval (time to wait between checks for updates). Add a trailing 

 for minutes and 

 

for hours. The maximum update interval is 1 hour.

AsyncOS includes the ability to revert the AsyncOS operating system to a previous qualified build for 
emergency uses. 

After upgrading to AsyncOS 7.0, you cannot revert to a version of AsyncOS earlier than 6.5.

Because upgrades cause one-way transformation of key subsystems, the reversion process is complex 
and requires qualification by Cisco Quality Assurance teams. Cisco certifies specific versions of CASE, 
Sophos, Outbreak Filters, and McAfee to AsyncOS versions. Not all prior versions of the AsyncOS 
operating system are available for reversion. The earliest AsyncOS version supported for this 
functionality is AsyncOS 5.5.0; prior versions of AsyncOS are not supported.

Using the 

revert

 command on a Cisco appliance is a very destructive action. This command destroys 

all configuration logs and databases. Only the network information for the management interface is 
preserved--all other network configuration is deleted. In addition, reversion disrupts mail handling until 
the appliance is reconfigured. Because this command destroys network configuration, you may need 
physical local access to the Cisco appliance when you want to issue the 

revert

 command. 

You must have a configuration file for the version you wish to revert to. Configuration files are not 
backwards-compatible.

An optional proxy server using HTTPS. If you define the HTTPS proxy 
server, it will be used to update the services listed in the GUI.