Cisco Cisco Web Security Appliance S170 사용자 가이드

Local server. For more information, see 

Receives an XML file that lists the available updates or AsyncOS upgrade versions. This XML file 
is known as the “manifest.”

Downloads the update or upgrade image files.

By default, each security service component periodically receives updates to its database tables from the 
Cisco update servers. However, you can manually update the database tables. 

Some updates are available on demand from the GUI pages related to the feature.

View a record of update activity in the updater log file. Subscribe to the updater log file on the System 
Administration > Log Subscriptions page.

Updates that are in-progress cannot be interrupted. All in-progress updates must complete before new 
changes can be applied. 

Choose System Administration > Upgrade and Update Settings.

Click Edit Update Settings.

Specify the location of the update files.

Initiate the update using the Update Now function key on the component page located on the Security 
Services tab. For example, Security Services > Web Reputation Filters page.

The CLI and the Web application interface may be sluggish or unavailable during the update process.

By default, AsyncOS contacts the Cisco update servers for both update and upgrade images and the 
manifest XML file. However, you can choose from where to download the upgrade and update images 
and the manifest file. Using a local update server for the images or manifest file for any of the following 
reasons:

You have multiple appliances to upgrade simultaneously. You can download the upgrade image 
to a web server inside your network and serve it to all appliances in your network.

Your firewall settings require static IP addresses for the Cisco update servers. The Cisco update 
servers use dynamic IP addresses. If you have strict firewall policies, you may need to configure a 
static location for updates and AsyncOS upgrades. For more information, see 

.