Cisco Multicloud Defense User Guide

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Cisco Multicloud Defense User Guide

Data Loss Prevention (DLP) Profile

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Learn how a Data Loss Prevention profile detects sensitive data in egress traffic and supports compliance protection with predefined or custom patterns.


The DLP (Data Loss Prevention) profile provides Multicloud Defense customers with the ability to specify policy rules to detect and take action upon finding exfiltration patterns in the data when the Multicloud Defense solution is deployed in the forward proxy (egress) mode.

Multicloud Defense allows customers to specify common pre-packaged data patterns such as Social Security Numbers (SSN), AWS secrets, credit card numbers etc., in addition to custom PCRE based regular expression patterns. This makes it easy to enforce protections for PCI, PII, and PHI data to meet compliance requirements. This feature is integrated with the existing Multicloud Defense feature set requiring no separate DLP services.


Create a Data Loss Prevention Profile

Procedure

1.

Navigate to Policies > Profiles > Data Loss Prevention.

2.

Click Create Intrusion Profile.

3.

Select Data Loss Prevention.

4.

Provide a unique Name and enter a description for the profile.

5.

Enter the DLP Filter List in the table.

6.

Click Add to insert more rows as needed.

7.

Provide a Description for the filter.

8.

Choose a predefined static pattern (e.g CVE Number) from the dropdown list or provide a custom Regular expression.

9.

Provide a count to define the number of times the pattern must be seen in the traffic.

10.

Select an Action to take if the pattern matches the count number of times.

Note

There are cases where the pre-defined pattern for AWS Access Key and AWS Secret Key doesn’t match in DLP inspection due to pattern being more restrictive. Use the following relaxed custom pattern in DLP profile to detect AWS Access Key and AWS Secret Key. Be aware that this could generate false positives log events.

AWS Access Key: (?<![A-Z0-9])[A-Z0-9]{20}(?![A-Z0-9])

AWS Secret Key: (?<![AZa-z0-9/+=])[A-Za-z0-9/+=]{40}(?![A-Za-z0-9/+=])

What to do next

Attach the profile to a policy rule set. See Rule Sets and Rule Set Groups for more information.