Cisco Cisco Web Security Appliance S170 Guía Del Usuario
18-23
Cisco IronPort AsyncOS 7.5.7 for Web User Guide
Chapter 18 URL Filters
Creating Time Based URL Filters
Configure these settings on the Security Services > End-User Notification page. For more information,
see
see
.
Note
The warn and continue feature only works for HTTP and decrypted HTTPS transactions. It does not
work with native FTP transactions.
work with native FTP transactions.
User Experience When Warning Users
When the URL filtering engine warns users for a particular request, it provides a warning page that the
Web Proxy sends to the end user. However, not all websites display the warning page to the end user. For
example, some Web 2.0 websites display dynamic content using javascript instead of a static webpage
and are not likely to display the warning page from the Web Proxy. When this happens, users are blocked
from the URL that is assigned the Warn option without being given the chance to continue accessing the
site anyway.
Web Proxy sends to the end user. However, not all websites display the warning page to the end user. For
example, some Web 2.0 websites display dynamic content using javascript instead of a static webpage
and are not likely to display the warning page from the Web Proxy. When this happens, users are blocked
from the URL that is assigned the Warn option without being given the chance to continue accessing the
site anyway.
Creating Time Based URL Filters
You can configure how the Web Security appliance to handles requests for URLs in particular categories
differently based on time and day. For example, you can block access to social networking sites, such as
blogs and forums, during business hours.
differently based on time and day. For example, you can block access to social networking sites, such as
blogs and forums, during business hours.
To define URL filtering actions by time you must first define at least one time range. For information
about time ranges, see
about time ranges, see
To create time based URL filtering actions for an Access Policy:
Step 1
Navigate to the Web Security Manager > Access Policies page.
Step 2
Click the link in the policies table under the URL Categories column for the policy group you want to
edit.
edit.
The Access Policies: URL Filtering: policyname page appears.
Step 3
Select Time-Based for the custom or predefined URL category you want to configure based on time
range.
range.
Figure 18-6
Defining Time Based URL Filtering Actions
When you select Time-Based for the URL category, additional fields appear under the category name
where you can choose the actions.
where you can choose the actions.