Permana, R., Ramadhani, D., & Lestari, I. (2019). Proteksi Keamanan Jaringan Komputer di Sekolah Menengah Kejuran Al-Madani Pontianak. International Journal of Natural Science and Engineering, 3(1), 37–43. https://doi.org/10.23887/ijnse.v3i1.22175