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9.13
A
PPLICATION
This section describes the Expiration feature. With the Expiration feature, virtual applications
can be set to expire after a certain number of days or after a certain date.
To set a virtual application to expire after a specific number of days:
•
Click on the Expiration button.
•
Check the Disallow execution after number of days checkbox.
•
Select the number of days after the application is first executed on a system it will take to
expire.
•
Choose the Time Source the virtual application will use to validate the date.
To set a virtual application to expire after a certain date:
•
Click on the Expiration button.
•
Check the Disallow execution after date checkbox.
•
Select the date the virtual application will expire.
•
Choose the Time Source the virtual application will use to validate the date.
For all expiration modes, the System clock setting will use the host system's clock to validate the
date. The Web server clock setting will validate the date against an HTTPS-based web
server. Check the Disallow execution if web server is unreachable checkbox to prevent the
application from being executed offline.
Tip: The Web server clock setting is more secure than the System clock setting since it prevents
the expiration mechanism from being circumvented by modifying the system clock. However, this
setting will prevent applications from executing on devices which cannot connect to the time
server source.
Optionally, an Expiration Warning can be set to warn the user when the virtual application is
about to expire. The message will be displayed each time the virtual application is executed when
it is within the specified threshold.
91
E
XPIRATION
Novell ZENworks Application Virtualization
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