Muhammad Nur, Teguh, Wasis Waskito, Azhar Fathoni, Bagas, Yuda, Ramadan Galih, Alif Ainnun Qoyum, and Samsoni. “The Effectiveness of the Port Knocking Method in Computer Security”. International Journal of Integrative Sciences, vol. 2, no. 6, June 2023, pp. 861-8, doi:10.55927/ijis.v2i6.4526.