AMADI, Dwi Nor; BUDIMAN, Arief; UTOMO, Pradityo. Analysis of the effectiveness of VPN and PPTP Protocol in E-Link Health Report Application Using NDLC Method. Journal of Information Systems and Informatics, [S. l.], v. 6, n. 2, p. 949–958, 2024. DOI: 10.51519/journalisi.v6i2.746. Disponível em: https://journal-isi.org/index.php/isi/article/view/746. Acesso em: 7 mar. 2026.