Abstract
Abstract: Software Defined Networking (SDN) is a rapidly evolving technology in the field of networking. It allows the computer networks to be managed via software instead of hardware devices. It gives the benefit of simplicity in management and easiness to apply new features in the network. Thus scalability, performance and maintainability become more sophisticated compared to the legacy hardware driven networks. But the SDN has more chances of being attacked by hackers, thus compromising the entire network. One common such threat is Denial of Service (DoS). Apart from such attacks in the legacy networks, the DoS attacks can be aimed at the SDN controller, Openflow switch and the controller-switch link by exhausting their resources. This paper proposes a novel and simple method to detect and mitigate such attacks through a Heavy Packet-in Flow Mitigation feature. Also it introduces an add-on feature ARP Flood Rule to reduce the number of ARP packets during the network initial boot up time. With both the features enabled, the network can reduce the packet-in flows to the controller and rescue the controller from overwhelming with huge packet-in message processing.
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