SizeConstraint
This is AWS WAF Classic documentation. For more information, see AWS WAF Classic in the developer guide.
For the latest version of AWS WAF, use the AWS WAFV2 API and see the AWS WAF Developer Guide. With the latest version, AWS WAF has a single set of endpoints for regional and global use.
Specifies a constraint on the size of a part of the web request. AWS WAF uses the Size, ComparisonOperator, and FieldToMatch to build an expression in the form of "Size``ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
Types
Properties
The type of comparison you want AWS WAF to perform. AWS WAF uses this in combination with the provided Size and FieldToMatch to build an expression in the form of "Size``ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
Specifies where in a web request to look for the size constraint.
The size in bytes that you want AWS WAF to compare against the size of the specified FieldToMatch. AWS WAF uses this in combination with ComparisonOperator and FieldToMatch to build an expression in the form of "Size``ComparisonOperator size in bytes of FieldToMatch". If that expression is true, the SizeConstraint is considered to match.
Text transformations eliminate some of the unusual formatting that attackers use in web requests in an effort to bypass AWS WAF. If you specify a transformation, AWS WAF performs the transformation on FieldToMatch before inspecting it for a match.