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Software-defined networking (SDN) is a technology for programming and efficiently managing networks. SDNs are prone to numerous threats, such as Distributed Denial of Service (DDoS), Man-in-the-middle, ARP Spoofing, Side-channels, and several other attacks. Separation of the data plane from the control plane makes SDN vulnerable to timing side-channel attacks. By comparing the response time of probe queries, an adversary can infer a pattern of request, which can invoke the controller and eventually discover information about the network. An adversary can apply these attacks to extract flow tables, routes, controller type, ports, etc. In this paper, we propose a novel security solution 'Netkasi' (kasi means 'hide' in Esperanto), to counter timing side-channel attacks in SDN. This solution hides the original response time information from the attacker and provides random response timing. As this security solution is designed to integrate with SDN, its architecture ens

Denial-of-service-ddo
Distributed-denial
Information-hiding
Software-defined-network
Iming-side-channel