As denial-of-service attacks increase in size and the utilized attack methods evolve research in mitigation methods is needed. Software-defined networking enables implementation different of denial-of-service mitigation methods. This study researches what methods are available in software-defined networking and how these methods perform. Methods found in literature were redirection, IP address change, port-hopping and shuffling methods. They were suited in mitigation of certain denial-of-service attacks. A comparative study about the performance of the methods is needed.