<ul><li>Navigate to Add Rules > Add Rules and Rule Groups page > Add my own rules and rule groups > Rule builder > Rule visual editor.</li><li>Define the Rule Settings: Name, Type (Regular rule), Condition (If a request matches the statement).</li><li>Configure Statement Settings: Inspect a request component (e.g., Single header), Specify the header, Match Type (Exactly matches string), String to Match (e.g., Pingdombot).</li><li>Set Action: Initially select CountCheck CloudWatch logs, then change to Block or Allow.</li></ul>

AWS WAF: Creating Custom String Match Rule

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