Damanik, Hillman Akhyar. “Securing Data Network for Growing Business VPN Architectures Cellular Network Connectivity”. RSF Conference Series: Engineering and Technology 1, no. 2 (December 20, 2021): 14–20. Accessed July 1, 2024. https://proceeding.researchsynergypress.com/index.php/cset/article/view/470.