Heryanto, A., D. Setiawan, B. F. Audrey, A. Hermansyah, N. Afifah, I. S. B. . Azhar, M. Y. B. . Idris, and R. . Budiarto. “Security and Performance Evaluation of PPTP-Based VPN With AES Encryption in Enterprise Network Environments”. Jurnal Teknik Informatika (Jutif), vol. 6, no. 4, Aug. 2025, pp. 2171-86, doi:10.52436/1.jutif.2025.6.4.4818.