In this paper, A Novel SDN-Based IoT Security Architecture Model for Big Data is implemented. To control and manage the network, Software Defined Networking (SDN) is used. The main intent of SDN controller is to implement a protocol for controlling the devices linearly and in the same way to modify the protocol for improving the performance. The entire novel SDN based IOT architecture is divided into four layers, mainly application layer, transport layer, gateway layer and data plane layer. Application layer consists of security, network update and quality of services. This mainly depends on the SDN (software Defined Network). Transport layer consists of wired communication network, mobile communication network and SDN controller. Gateway layer uses SDN gateway controller. Data plane communication protocol will provide communication for the protocol. Data plane will perform the physical switch, virtual switch and network devices. From results, it can observe that it gives effective results in terms of efficiency and performance.