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Barracuda Web Application Firewall

How to Mask Sensitive Data in Logs

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Data masking security of the Barracuda Web Application Firewall obscures sensitive data elements before logging them. Configured parameters like social security numbers, credit card information, or other proprietary data in the URL parameters of a request can be protected from unauthorized exposure in the logs. Data masking is configured for an application using parameter names to specify sensitive data. Logged data appears in BASIC > Access Logs, with the sensitive data overwritten by 'X'es.

  • Masking cannot be applied to sensitive data in custom parameters or custom headers.
  • Once masked, the original data cannot be retrieved, recovered, or restored.

Configure Data Masking

  1. Go to the WEBSITES > Advanced Security page, Mask Sensitive Data In Logs section.
  2. Click Edit next to the service for which masking is necessary.
  3. In the Mask Sensitive Data window, enter the names of sensitive parameters. You can provide multiple parameter names separated by commas with no spaces between. Example: cardId,securityNumber,password

    You can use the asterisk (*) wildcard character to mask all parameters in the URL.

  4. Click Save.
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