Cisco Cisco Email Security Appliance C160 Betriebsanweisung
15-8
Cisco AsyncOS 8.5.6 for Email User Guide
Chapter 15 URL Filtering
Taking Action Based on the Reputation or Category of URLs in Messages
Note
The Cisco Cloud Web Security proxy service has no configurable options in this release. For
example, there is no threat score threshold to adjust or action to specify based on threat
score.
example, there is no threat score threshold to adjust or action to specify based on threat
score.
•
Replace the URL with any text.
To include the original URL in the text that appears in the message, use the
$URL
variable.
Examples:
–
Replace all URLs in the Illegal Downloads category with a note:
Message from your system administrator: A link to an illegal downloads web site
has been removed from this message.
–
Include the original URL along with a warning:
WARNING! The following URL may contain malware: $URL
This becomes: WARNING: The following URL may contain malware: http://example.com.
–
Redirect to a custom proxy or web security service:
http://custom_proxy/$URL
This becomes: http://custom_proxy/http://example.com
The reputation and category of URLs that are included on the selected URL whitelist or on the global
URL whitelist are not evaluated.
URL whitelist are not evaluated.
If you defang or replace URLs, you can choose to ignore URLs in signed messages.
Pairing a URL Reputation or URL Category action with a URL Reputation or URL Category condition
(or rule) is not recommended. If you pair a condition (rule) and action that include different categories,
then no match occurs.
(or rule) is not recommended. If you pair a condition (rule) and action that include different categories,
then no match occurs.
Tip
To check the category of a particular URL, visit the link in
.
Related Topics
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Redirected URLs: What Does the End User Experience?
Based on the evaluation by the Cisco Cloud Web Security proxy service:
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If the site is benign, the user is directed to the target web site and has no knowledge that the link has
been redirected.
been redirected.
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If the site is malicious, the user sees a notice that the site is malicious and access to it has been
blocked.
blocked.