The Parser matcher identifies requests that Dynamic Data Masking is unable to parse.
You can use the Parser matcher with security rule actions to change the request. For example, if you want to block requests that Dynamic Data Masking cannot parse, you can create a rule with the following properties:
Enter a name for the rule. In this example, the rule name is parsed_statement.
Select the Parser matcher.
Select the Block Statement rule action. Enter a message that Dynamic Data Masking sends to the client when the statement is blocked. In this example the message is UNABLE TO PARSE STATEMENT.
Select Continue. The Continue processing action indicates that the Rule Engine should continue to the next rule in the rule tree.
Log When Rule is Applied
Select the Log When Rule is Applied checkbox to create an entry in the rule.log file if the Rule Engine applies the rule action to the request.