Руководство Пользователя для Cisco Cisco Email Security Appliance C170

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Chapter 11      Data Loss Prevention
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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
OL-22158-02
to a step to make a change, you must proceed through the remaining steps until 
you reach this review page again. All settings you previously entered will be 
remembered.
Figure 11-9
DLP Assessment Wizard: Step 3. Review
Once you are satisfied with the information displayed click Finish. AsyncOS 
displays the Outgoing Mail Policies page with your DLP policies enabled in the 
default outgoing mail policy. A summary of your DLP policy configuration is 
displayed at the top of the page. Commit your changes.
For information on editing the DLP policies and creating additional ones, see 
. For information on enabling the DLP policies for 
other outgoing mail policies, see 
Content Matching Classifiers
Content matching classifiers are the detection components of the RSA Email DLP 
scanning engine. They search messages and the content of extracted attachments 
for data patterns, such as credit card numbers or driver license identification 
numbers, and the context in which the patterns appear. For example, a classifier 
for detecting credit card numbers scans for not only patterns of numbers that 
match the credit card number format, but supporting data like expiration dates and 
the name of credit card company. Evaluating the context of the data decreases the 
number of false positives.
Many of the policy templates from RSA include a predefined set of classifiers. 
When creating a policy based on the Custom Policy template, you can choose an 
RSA classifier or add one of your own. For information on creating your own 
classifier to use in custom DLP policies, see