Cisco Cisco Email Security Appliance C160 Guía Del Usuario
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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
OL-22158-02
Chapter 15 System Administration
Note
You can use the
ping
command to ensure that the appliance can contact the local
server. You can also use the
telnet
command to telnet to port 80 of the local
server to ensure the local server is listening on that port.
AsyncOS Reversion
AsyncOS includes the ability to revert the AsyncOS operating system to a
previous qualified build for emergency uses.
previous qualified build for emergency uses.
Note
After upgrading to AsyncOS 7.0, you cannot revert to a version of AsyncOS
earlier than 6.5.
earlier than 6.5.
Available Versions
Because upgrades cause one-way transformation of key subsystems, the reversion
process is complex and requires qualification by IronPort Quality Assurance
teams. IronPort certifies specific versions of CASE, Sophos, Virus 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.
process is complex and requires qualification by IronPort Quality Assurance
teams. IronPort certifies specific versions of CASE, Sophos, Virus 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.
Important Note About Reversion Impact
Using the
revert
command on an IronPort 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 IronPort appliance when you want to
issue the
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 IronPort appliance when you want to
issue the
revert
command.