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Barracuda Web Application Firewall

Comment Spam Protection

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The Comment Spam protection feature on the WAF protects you against comment spam attacks. The WAF creates a block-list of spammers that contains the fake URL entries with details such as the pattern name, pattern, and the version of the pattern against which the WAF provides protection.

When Comment Spam is enabled, any spam URL listed in the “View Spam URL List” is prevented from entering into the application if it appears in the Parameter field specified in the “Comment Spam” section.

The BOT MITIGATION > Bot Spam Mitigation page allows you to edit a Comment Spam.

  • Service Name - Displays the name of the service for which you want to edit the comment span.
  • Comment Spam Parameter Class - Displays the parameter class of the comment spam.
  • Parameter - Specify the form field name to be protected against comment spam.
  • Exception Patterns - Specify the patterns to be allowed as exceptions to mitigate false positives even if this is a part of a referer spam.

 

The configuration should be the exact "Pattern Name" as seen on the BOT MITIGATION > View Spam URL List page, or as defined during the creation of a "New Group" under Comment Spam Types through the ADVANCED > Libraries page. You can also find the pattern name in a web firewall log when a false positive occurs due to a potential exception pattern.

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