Biblio

Software Defined Networking (SDN) technology increases the evolution of Internet and network development. SDN, with its logical centralization of controllers and global network overview changes the network's characteristics, on term of flexibility, availability and programmability. However, this development increased the network communication security challenges. To enhance the SDN security, we propose the BCFR solution to avoid false flow rules injection in SDN data layer devices. In this solution, we use the blockchain technology to provide the controller authentication and the integrity of the traffic flow circulated between the controller and the other network elements. This work is implemented using OpenStack platform and Onos controller. The evaluation results show the effectiveness of our proposal.

The OpenFlow architecture is a proposal from the Clean Slate initiative to define a new Internet architecture where the network devices are simple, and the control and management plane is performed by a centralized controller. The simplicity and centralization architecture makes it reliable and inexpensive. However, this architecture does not provide mechanisms to detect conflicting in flows, allowing that unreachable flows can be configured in the network elements, and the network may not behave as expected. This paper proposes an approach to conflict detection using first-order logic to define possible antagonisms and employ an inference engine to detect conflicting flows before the OpenFlow controller implement in the network elements.