Cisco Cisco Web Security Appliance S690 User Guide

Cisco recommends changing the update and upgrade settings to use the Cisco IronPort update servers 
(using dynamic or static addresses) after the upgrade is complete to ensure the security service 
components continue to update automatically.

For downloading AsyncOS upgrade files, you must have a system in your internal network that has a 
web browser (see 

) and Internet access to the Cisco IronPort update 

servers. 

If you need to configure a firewall setting to allow HTTP access to this address, you must configure it 
using the DNS name and not a specific IP address.

For hosting AsyncOS upgrade files, a server on the internal network must have a web server, such as 
Microsoft IIS (Internet Information Services) or the Apache open source server, which has the following 
features:

Supports the display of directory or filenames in excess of 24 characters.

Has directory browsing enabled.

Is configured for anonymous (no authentication) or Basic (“simple”) authentication.

Contains at least 350MB of free disk space for each AsyncOS upgrade image.

Navigate to the System Administration > Upgrade and Update Settings page, and click Edit Update 
Settings.

Configure the settings, referencing the information in 

Automatic Updates

Choose whether or not to enable automatic updates of the security 
components. If you choose automatic updates, enter the time interval. The 
default is enabled and the update interval is 5 minutes.

Upgrade Notifications

Choose whether to display a notification at the top of the Web Interface 
when a new upgrade to AsyncOS is available. The appliance only displays 
this notification for administrators.

For more information, see