Prioritizing Network-On-Chip Routers for Countermeasure Techniques against Flooding Denial-of-Service Attacks: A Fuzzy Multi-Criteria Decision-Making Approach

The implementation of Countermeasure Techniques (CTs) in the context of Network-On-Chip (NoC) based Multiprocessor System-On-Chip (MPSoC) routers against the Flooding Denial-of-Service Attack (F-DoSA) falls under Multi-Criteria Decision-Making (MCDM) due to the three main concerns, called: traffic variations, multiple evaluation criteria-based traffic features, and prioritization NoC routers as an alternative. In this study, we propose a comprehensive evaluation of various NoC traffic features to identify the most efficient routers under the F-DoSA scenarios. Consequently, an MCDM approach is essential to address these emerging challenges. While the recent MCDM approach has some issues, such as uncertainty, this study utilizes Fuzzy-Weighted Zero-Inconsistency (FWZIC) to estimate the criteria weight values and Fuzzy Decision by Opinion Score Method (FDOSM) for ranking the routers with fuzzy Single-valued Neutrosophic under names (SvN-FWZIC and SvN-FDOSM) to overcome the ambiguity. The results obtained by using the SvN-FWZIC method indicate that the Max packet count has the highest importance among the evaluated criteria, with a weighted score of 0.1946. In contrast, the Hop count is identified as the least significant criterion, with a weighted score of 0.1090. The remaining criteria fall within a range of intermediate importance, with enqueue time scoring 0.1845, packet count decremented and traversal index scoring 0.1262, packet count incremented scoring 0.1124, and packet count index scoring 0.1472. In terms of ranking, SvN-FDOSM has two approaches: individual and group. Both the individual and group ranking processes show that (Router 4) is the most effective router, while (Router 3) is the lowest router under F-DoSA. The sensitivity analysis provides a high stability in ranking among all 10 scenarios. This approach offers essential feedback in making proper decisions in the design of countermeasure techniques in the domain of NoC-based MPSoC.