International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 04 | Apr 2025
p-ISSN: 2395-0072
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SmartAddr: Dynamic IPv6 Addressing for Secure IoT Communication Rozeeta Fernandes1, Riya Kasture2, Anushree Dere3, Srushti Gaidhane4, Varshapriya Jyotinagar5 1B. Tech Student, Dept of Computer Engineering and IT, VJTI College, Mumbai, Maharashtra, India 2B. Tech Student, Dept of Computer Engineering and IT, VJTI College, Mumbai, Maharashtra, India 3B. Tech Student, Dept of Computer Engineering and IT, VJTI College, Mumbai, Maharashtra, India
4B. Tech Student, Dept of Computer Engineering and IT, VJTI College, Mumbai, Maharashtra, India 5Assistant Professor, Dept of Computer Engineering, and IT, VJTI College, Mumbai, Maharashtra, India
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Abstract - With the increasing deployment of IoT devices,
decision-making. These servers are frequent targets of cyberattacks such as scanning, spoofing, and denial-ofservice (DoS) due to their predictable IP addressing and constant network presence. Traditional security mechanisms, while effective to some extent, often struggle to scale with the vast number of connected devices and dynamic communication patterns in IoT networks [3]. As servers play a crucial role in processing sensitive information and maintaining system integrity, ensuring their security is foundational to the reliability and trustworthiness of the entire IoT infrastructure [4].
the security of IoT servers continues to face significant challenges. Building upon the concept of an addressless IoT server, this paper presents an improved algorithm that enhances the original design using dynamic IPv6 suffix generation. Instead of assigning a fixed IPv6 address to the server, only a constant IPv6 prefix is allocated. When a client initiates communication, it uses an encryption mechanism to generate a specific destination address under this prefix. The server verifies the address upon receiving a packet and discards it if verification fails. The improved algorithm introduces a more efficient validation mechanism and optimized address generation logic to reduce the chances of packet drops caused by timing mismatches. The proposed improvements aim to enhance security, reduce exposure to scanning attacks, and improve communication reliability in dynamic IoT environments.
1.3 Motivation for “Addressless” IoT servers Traditional IoT servers typically use static or predictable IP addresses, which are often stored in routing tables or DNS records, making them easy targets for network scanning, spoofing, and denial-of-service attacks [5]. These fixed addresses expose the server’s presence on the network, allowing attackers to detect and exploit them. To address this vulnerability, the concept of addressless IoT servers has emerged, where the server is assigned only a dynamic IPv6 prefix, and the actual destination address is generated on-the-fly by the client using cryptographic methods. This approach effectively hides the server from unauthorized users, enhances resistance to scanning, and adds an extra layer of security through address verification [6]. Such dynamic address generation leverages the vast IPv6 space, making targeted attacks significantly more difficult.
Key Words: IPv6, IoT, server security, dynamic addressing, client authentication
1.INTRODUCTION 1.1 Rise of ipv6 in IoT era The rapid expansion of the Internet of Things (IoT) has led to an unprecedented demand for IP addresses, as billions of smart devices require unique identification to communicate over networks. The limited address space of IPv4 (approximately 4.3 billion addresses) is insufficient to support this scale, prompting the global transition to IPv6, which offers a vastly larger address space of 2¹²⁸ addresses [1]. IPv6 also introduces features like simplified header formats, stateless address autoconfiguration, and improved routing efficiency — all of which are essential for scalable and reliable IoT deployments [2]. As a result, IPv6 adoption is becoming increasingly critical for the future of secure and efficient IoT ecosystems.
The upcoming sections of this research paper are structured as follows: Section 2: Literature Survey presents an overview of existing algorithms relevant to IoT server security and highlights their limitations. Section 3: Addressless Server Model from Literature explains the algorithm proposed by Liu et al., which outlines a theoretical approach for enhancing IoT server security using dynamic IPv6 addressing. Section 4: Improvement and Proposed Algorithm introduces our modified approach aimed at addressing the identified shortcomings, along with a conceptual block diagram for clarity. Section 5: Conclusion and Future Scope summarizes the key findings of this research and outlines potential directions
1.2 IoT Server Security Secure IoT ecosystems rely not only on device-level protections but also on the robustness of IoT servers, which act as central hubs for data exchange, control, and
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