On the Security of Software-Defined Networks

To achieve a widespread deployment of Software-Defined Networks (SDNs) these networks need to be secure against internal and external misuse. Yet, currently, compromised end hosts, switches, and controllers can be easily exploited to launch a variety of attacks on the network itself. In this work we discuss several attack scenarios, which -- although they have a serious impact on SDN -- have not been thoroughly addressed by the research community so far. We evaluate currently existing solutions against these scenarios and formulate the need for more mature defensive means.