BloomStore: Dynamic Bloom-Filter-based Secure Rule-Space Management Scheme in SDN

Software-defined networking (SDN) provides an efficient way of managing traffic load by shifting complex and rigid computing tasks to the centralized controller. It reduces the burden on the switches, task of which is to perform the routing based upon the rule-action pair. However, the flow table storage capacity of switches is limited. It may have to face performance bottlenecks, which, in turn, can cause serious security breaches and performance degradation. Hence, in this article, BloomStore, which is a dynamic bloom-filter-based secure rule-space management scheme in SDN, is proposed. BloomStore handles the data traffic dynamically by managing network resources. A twofold security check is used for secure data transfer using double hashing, i.e., two independent hash functions are used to generate k hash functions. Moreover, partitioned hashing is proposed to have insertion and query in a bucket of bloom array. The result analysis demonstrates that BloomStore outperforms its competing variants with respect to various performance parameters.

I. Introduction

The amount of data generated by various smart devices and sensors deployed in the Internet of Things (IoT) environment has increased manifolds over the past decade. These generated data need to be analyzed and processed closer to the location of the end users, i.e., at the edge of the network, to provide enhanced quality of experience (QoE) to them. The enormous amount of data generated by smart devices and machines, which are transmitted over the underlying network infrastructure, are not known a priori. Therefore, the rule and policies of the underlying network technology need to be designed according to the dynamic requirements of the end users. The traditional transmission-control-protocol/Internet-protocol-based networks may not meet the dynamic requirements of the IoT environment due to interoperability among various smart devices. To handle this issue, software-defined networking (SDN) is one of the popular choices due to its manifold benefits, such as reconfigurability, dynamic traffic management, scalability, and global network visibility [1].