Cisco Cisco Web Security Appliance S670 Betriebsanweisung
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AsyncOS 8.8 for Cisco Web Security Appliances User Guide
Chapter 22 Perform System Administration Tasks
Reverting to a Previous Version of AsyncOS for Web
Reverting AsyncOS for an Appliance Managed by the SMA
You can revert AsyncOS for Web from the Web Security appliance. However, if the Web Security
appliance is managed by a Security Management appliance, consider the following rules and guidelines:
appliance is managed by a Security Management appliance, consider the following rules and guidelines:
•
When Centralized Reporting is enabled on the Web Security appliance, AsyncOS for Web finishes
transferring the reporting data to the Security Management appliance before it starts the reversion.
If the files take longer than 40 seconds to transfer to the Security Management appliance, AsyncOS
for Web prompts you to continue waiting to transfer the files, or continue the reversion without
transferring all files.
transferring the reporting data to the Security Management appliance before it starts the reversion.
If the files take longer than 40 seconds to transfer to the Security Management appliance, AsyncOS
for Web prompts you to continue waiting to transfer the files, or continue the reversion without
transferring all files.
•
You must associate the Web Security appliance with the appropriate Configuration Master after
reverting. Otherwise, pushing a configuration from the Security Management appliance to the Web
Security appliance might fail.
reverting. Otherwise, pushing a configuration from the Security Management appliance to the Web
Security appliance might fail.
Reverting AsyncOS for Web to a Previous Version
Warning
Reverting the operating system on a Web Security appliance is a very destructive action and destroys
all configuration logs and databases. Reversion also disrupts web traffic handling until the appliance
is reconfigured. Depending on the initial Web Security appliance configuration, this action may
destroy network configuration. If this happens, you will need physical local access to the appliance
after performing the reversion.
all configuration logs and databases. Reversion also disrupts web traffic handling until the appliance
is reconfigured. Depending on the initial Web Security appliance configuration, this action may
destroy network configuration. If this happens, you will need physical local access to the appliance
after performing the reversion.
Before You Begin
•
Contact Cisco Quality Assurance to confirm that you can perform the intended reversion.
•
Back up the following information from the Web Security appliance to a separate machine:
–
System configuration file (with passwords unmasked).
–
Log files you want to preserve.
–
Reports you want to preserve.
–
Customized end-user notification pages stored on the appliance.
–
PAC files stored on the appliance.
Step 1
Log into the CLI of the appliance you want to revert.
Note
When you run the
revert
command in the next step, several warning prompts are issued. After these
warning prompts are accepted, the revert action takes place immediately. Therefore, do not begin the
reversion process until after you have completed the pre-reversion steps.
reversion process until after you have completed the pre-reversion steps.
Step 2
Enter the
revert
command.
Step 3
Confirm twice that you want to continue with the reversion.
Step 4
Choose one of the available versions to revert to.
The appliance reboots twice.