Cisco Cisco Web Security Appliance S160 Guía Del Usuario
17-4
Cisco IronPort AsyncOS 7.7 for Web User Guide
Chapter 17 URL Filters
Configuring the URL Filtering Engine
Cisco IronPort Web Usage Controls shares some database components with the Web Reputation Filters
(WBRS) database. Because of this shared information, Cisco recommends fully participating in the
SensorBase Network because it allows Cisco IronPort Web Usage Controls to validate and categorize all
URLs dynamically classified by the Dynamic Content Analysis engine, including all URLs that could
not otherwise be classified, improving overall efficacy.
(WBRS) database. Because of this shared information, Cisco recommends fully participating in the
SensorBase Network because it allows Cisco IronPort Web Usage Controls to validate and categorize all
URLs dynamically classified by the Dynamic Content Analysis engine, including all URLs that could
not otherwise be classified, improving overall efficacy.
For information about update intervals and the Cisco IronPort update server, see
.
The URL categories database includes many different factors and sources of data internal to Cisco and
from the Internet. One of the factors occasionally considered, heavily modified from the original, is
information from the Open Directory Project.
from the Internet. One of the factors occasionally considered, heavily modified from the original, is
information from the Open Directory Project.
Tip
To see what category a particular web site is assigned to, go to the URL in
Configuring the URL Filtering Engine
To apply predefined category settings to policy groups and configure custom settings to manage web
transactions, see the sections below. By default, the Cisco IronPort Web Usage Controls URL filtering
engine is enabled in the System Setup Wizard.
transactions, see the sections below. By default, the Cisco IronPort Web Usage Controls URL filtering
engine is enabled in the System Setup Wizard.
Step 1
Navigate to the Security Services > Acceptable Use Controls page.
Step 2
Click Edit Global Settings.
Step 3
Verify the Enable Acceptable Use Controls property is enabled.
Note
For information about the Application Visibility and Control setting, see
Step 4
Choose whether or not to enable the Dynamic Content Analysis Engine.
For more information on the Dynamic Content Analysis Engine, see
.
Step 5
Choose the default action the Web Proxy should use when the URL filtering engine is unavailable, either
Monitor or Block. Default is Monitor.
Monitor or Block. Default is Monitor.
Step 6
Submit and commit your changes.
Managing Updates to the Set of URL Categories
The set of predefined URL categories for Cisco IronPort Web Usage Control may occasionally be
updated, in order to accommodate new web trends and evolving usage patterns.
updated, in order to accommodate new web trends and evolving usage patterns.