Antoniuk, Jerzy, and Małgorzata Plechawska-Wójcik. “Comparative Analysis of VPN Protocols: Comparative Analysis of VPN Protocols ”. Journal of Computer Sciences Institute 27 (June 30, 2023): 138–144. Accessed July 22, 2024. https://ph.pollub.pl/index.php/jcsi/article/view/3315.