searchString

A string value that you want AWS WAF to search for. AWS WAF searches only in the part of web requests that you designate for inspection in FieldToMatch . The maximum length of the value is 200 bytes. For alphabetic characters A-Z and a-z, the value is case sensitive. Don't encode this string. Provide the value that you want AWS WAF to search for. AWS CloudFormation automatically base64 encodes the value for you. For example, suppose the value of Type is HEADER and the value of Data is User-Agent . If you want to search the User-Agent header for the value BadBot , you provide the string BadBot in the value of SearchString . You must specify either SearchString or SearchStringBase64 in a ByteMatchStatement .