A Survey of 802.1X: Securing Network Access in the Modern Age

The advent of wireless and wired net- works has revolutionized the way we communicate and access information, yet it has also introduced new secu- rity challenges. Among the various pro- tocols designed to mitigate these chal- lenges, 802.1X stands out as a corner- stone for securing network access. This paper presents a comprehensive sur- vey of the 802.1X protocol, focusing on its role in modern networking, the types of Extensible Authentication Proto- col (EAP) methods it supports, and the security vulnerabilities and mitigation strategies associated with its implemen- tation. Through an examination of com- mon security vulnerabilities, such as de- nial of service (DoS) attacks, man-in-the- middle (MitM) attacks, and session hi- jacking, the paper highlights the impor- tance of robust authentication mecha- nisms in safeguarding network integrity. Furthermore, the paper delves into real- world applications and case studies, il- lustrating the practical implications of 802.1X in securing critical infrastructure like silent clients. As technology contin- ues to evolve, the paper also explores fu- ture directions and research opportuni- ties, emphasizing the need for ongoing innovation to address emerging threats and leverage new technologies effec- tively. This survey serves as a valuable re- source for network administrators, secu- rity professionals, and researchers inter- ested in understanding the current state of 802.1X and its significance in securing network access in the modern age.