Andriani, Ria, Ahmad Sa’di, and Andriyan Putra. “Implementasi VPN Menggunakan Metode Point to Point Tunneling Protocol”. Building of Informatics, Technology and Science (BITS) 4, no. 1 (June 30, 2022): 184−190. Accessed May 12, 2026. https://ejurnal.seminar-id.com/index.php/bits/article/view/1611.