Cisco Cisco Email Security Appliance C160 Mode D'Emploi

URL filtering uses the reputation and category of URL links in messages to: 

Increase the effectiveness of protection from malicious URLs in messages 

URL filtering is incorporated into Outbreak Filtering. This strengthened protection is useful even if 
your organization already has a Cisco Web Security Appliance or similar protection from web-based 
threats, because it blocks threats at the point of entry. 

You can also use content or message filters to take action based on the Web Based Reputation Score 
(WBRS) of URLs in messages. For example, you can rewrite URLs with suspect or unknown 
reputation to redirect them to the Cisco Web Security Proxy for click-time evaluation of their safety. 

Better identify spam 

The appliance uses the reputation and category of links in messages, in conjunction with other 
spam-identification algorithms, to help identify spam. For example, if a link in a message belongs 
to a marketing web site, the message is more likely to be a marketing message. 

Support enforcement of corporate acceptable use policies 

The category of URLs (for example, Adult Content or Illegal Activities) can be used in conjunction 
with content and message filters to enforce corporate acceptable use policies. 

URL filtering is incorporated into the anti-spam, outbreak, content, and message filtering processes in 
the work queue. 

URLs in incoming and outgoing messages (excluding attachments) are evaluated. Any valid string for a 
URL is evaluated, including strings with the following: