An Efficient Method for Detecting Supernodes Using Reversible Summary Data Structures in the Distributed Monitoring Systems

Supernode detection has many applications in detecting network attacks, assisting resource allocation, etc. As 5G/IoT networks constantly grow, big network traffic brings a great challenge to collect massive traffic data in compact and real-time way. Previous works focus on detecting supernodes in a measurement point, while only a few works consider it in the distributed monitoring system. Moreover, they are not able to measure two types of node cardinalities simultaneously and reconstruct labels of supernodes efficiently due to large calculation and memory cost. To address these problems, we propose a novel reversible and distributed traffic summarization called RDS to simultaneously measure source and destination cardinalities for detecting supernodes in the distributed monitoring system. The basic idea of our approach is that each monitor generates a summary data structure using the coming packets and sends the summary data structure to the controller; then, the controller aggregates the received summary data structures, estimates node cardinalities, and reconstructs labels of supernodes according to the aggregated summary data structure. The experimental results based on real network traffic demonstrate that the proposed approach can detect up to 96% supernodes with a low memory requirement in comparison with state-of-the-art approaches.