EVALUATING AD-HOC NETWORK PERFORMANCE AGAINST BLACK HOLE, SYBIL, AND DDOS ATTACKS

Abstract

ABSTRACT: End users' safety when using applications in vehicular networks is a growing concern. Therefore, it's crucial to make these applications highly secure to guarantee dependable service for users and sufficient human life safety. Though unwanted, the attacker is also one of the major entities that can critically affect a new potentially lifesaving vehicular network. These bothersome attackers behave in very unpredictable ways and can launch various kinds of attacks. VANET aims to maintain traffic congestion by keeping in touch with nearby vehicles. Ad-hoc networks are decentralized wireless networks where nodes communicate directly with each other without relying on a fixed infrastructure. Ad-hoc networks, characterized by their decentralized and dynamic nature, are vulnerable to various security threats that can severely impact their performance. The results indicate that black hole attacks cause significant packet drops and throughput reductions due to malicious nodes discarding packets. Sybil attacks lead to increased packet collisions and routing inconsistencies, resulting in higher energy consumption. DDoS attacks overwhelm the network with excessive traffic, drastically reducing throughput and increasing both packet collisions and energy usage. This analysis provides critical insights into the distinct impacts of each attack type, highlighting the need for robust security mechanisms to ensure the reliability and efficiency of ad-hoc networks.