One strategy to defeat TCP SYN flooding attacks is to make the server stateless so that the attacks won't be able to exhaust the server's limited resources. A technique that implements this strategy is SYN cookies which is a defense mechanism designed specifically for SYN flooding. Give an alternative defense mechanism to mitigate SYN flooding attacks by briefly describing how it would work and how it would complement SYN cookies. $($Hint: Think about which general defense mechanism covered in class can do this.