Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
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Cisco AsyncOS 9.5 for Email User Guide
Chapter 16 Protecting Against Malicious or Undesirable URLs
Setting Up URL Filtering
Which URLs Are Evaluated
URLs in incoming and outgoing messages (excluding attachments) are evaluated. Any valid string for a
URL is evaluated, including strings with the following:
URL is evaluated, including strings with the following:
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http, https, or www
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domain or IP address
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port number preceded by a colon (:)
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uppercase or lowercase letters
When evaluating URLs to determine whether a message is spam, if necessary for load management, the
system prioritizes screening of incoming messages over outgoing messages.
system prioritizes screening of incoming messages over outgoing messages.
Setting Up URL Filtering
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Requirements for URL Filtering
In addition to enabling URL filtering, you must enable other features depending on desired functionality.
For enhanced protection against spam:
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Anti-spam scanning must be enabled globally and per applicable mail policy. This can be either the
IronPort Anti-Spam or the Intelligent Multi-Scan feature. See the anti-spam chapter.
IronPort Anti-Spam or the Intelligent Multi-Scan feature. See the anti-spam chapter.
For enhanced protection against malware:
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The Outbreak Filters feature must be enabled globally and per applicable mail policy. See the
Outbreak Filters chapter.
Outbreak Filters chapter.
To take action based on URL reputation, or to enforce acceptable use policies using message and content
filters:
filters:
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The Outbreak Filters feature must be enabled globally. See the Outbreak Filters chapter.
Enable URL Filtering
You can enable URL filtering using the Security Services > URL Filtering page in the web interface or
the
the
websecurityconfig
command in CLI.