RISM -- Reputation Based Intrusion Detection System for Mobile Ad hoc Networks

TL;DR

This paper introduces RISM, a reputation-based intrusion detection system integrated with routing for mobile ad hoc networks, inspired by human social behavior, enhancing security and efficiency.

Contribution

It presents a semi-distributed reputation-based IDS that improves network security without high overhead, using innovative trust management and social-inspired paradigms.

Findings

Outperforms normal DSR in packet delivery ratio

Reduces routing overhead even with malicious nodes

Effective in detecting and mitigating intrusions

Abstract

This paper proposes a combination of an Intrusion Detection System with a routing protocol to strengthen the defense of a Mobile Ad hoc Network. Our system is Socially Inspired, since we use the new paradigm of Reputation inherited from human behavior. The proposed IDS also has a unique characteristic of being Semi-distributed, since it neither distributes its Observation results globally nor keeps them entirely locally; however, managing to communicate this vital information without accretion of the network traffic. This innovative approach also avoids void assumptions and complex calculations for calculating and maintaining trust values used to estimate the reliability of other nodes observations. A robust Path Manager and Monitor system and Redemption and Fading concepts are other salient features of this design. The design has shown to outperform normal DSR in terms of Packet Delivery Ratio and Routing Overhead even when up to half of nodes in the network behave as malicious.