Análisis del impacto de un ataque DoS en la calidad de servicio de sistemas streaming multimedia en redes SDN.

Abstract

Software Defined Networks (SDN) stand out for their flexibility to adapt to new services and reduce management costs. Additionally, multimedia streaming applications are one of the most important services in the network, although they demand high requirements on the quality of service (QoS). Despite the benefits that SDN offers over multimedia streaming services, vulnerabilities can use can cause various attacks on the network, such as Denial of Service (DoS) attacks. The effects of a DoS attack on the QoS of multimedia services in SDN networks have not been thoroughly analyzed. For this reason, this work proposes a proposes an arquitecture to test and analyze the effect of different types of DoS attacks to be carried out on the elements of an SDN network that transmit multimedia information in real time. The architecture enables the comparison between two scenarios (normal vs. under attack) and the effect on QoS / QoE in terms of Detail Loss Metric / ADM2 (DLM / ADM2), Structural Similarity Index Measure (SSIM), Peak Signal to Noise Ratio (PSNR) and Video Multimethod Assessment Fusion (VMAF). The test attacks carried out are: spoofing to the SDN network, flooding to the multimedia streaming server and the client server. The results obtained show that the attack on the multimedia client is more effective: in QoS, the ADM2 which is reduced by 20 %, PSNR by 56 %, SSIM by 24 %, and for QoE with VMAF, you get a score of 54 \% video quality perception.