Cisco Cisco Email Security Appliance C170 Guía Del Usuario
16-6
User Guide for AsyncOS 9.7 for Cisco Email Security Appliances
Chapter 16 Protecting Against Malicious or Undesirable URLs
Setting Up URL Filtering
Step 2
Select Add URL List or click a list to edit.
Be sure all URLs that you want to globally whitelist are in a single list. You can select only one global
whitelist for URL filtering.
whitelist for URL filtering.
Step 3
Create and submit the URL list.
To view a list of supported URL formats, enter a semicolon (;) into the URLs box and click Submit.
Then click the more... link that appears.
Then click the more... link that appears.
Each URL, domain, or IP address can be on a separate line, or separate each with a comma.
Step 4
Commit your changes.
What To Do Next
•
•
To designate a URL list as the whitelist for a specific condition (rule) or action in a content or
message filter, see
message filter, see
and
. For message filters, see also
and
.
Related Topics
•
Importing a URL List
You can import a URL list to use as a whitelist for URL filtering.
Procedure
Step 1
Create the text file to import:
•
The first line must be the name of the URL list.
•
Each URL must be on a separate line.
Step 2
Upload the file to the
/configuration
directory on the appliance.
Step 3
Use the
urllistconfig
>
new
command in the command-line interface.
Customizing the Notification That End Users See If a Site Is Malicious
If an end user clicks a malicious URL identified by Outbreak Filtering or a Policy (using Content or
Message Filters), the Cisco Web Security proxy displays a notification in the end user’s web browser.
This notification states that the site is malicious and access to it has been blocked.
Message Filters), the Cisco Web Security proxy displays a notification in the end user’s web browser.
This notification states that the site is malicious and access to it has been blocked.
When an end user clicks on a URL rewritten using Outbreak Filtering, the notification page is displayed
for 10 seconds and then is redirected to the Cisco Web Security proxy for click-time evaluation.
for 10 seconds and then is redirected to the Cisco Web Security proxy for click-time evaluation.
You can customize the appearance of this notification page and display your organization’s branding
such as company logo, contact information, and so on.
such as company logo, contact information, and so on.