Husain, Husain, I Putu Hariyadi, Kurniadin Latif, and Galih Aditya. “Implementation of Port Knocking With Telegram Notifications to Protect Against Scanner Vulnerabilities”. MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer 23, no. 1 (November 30, 2023): 215-228. Accessed May 18, 2024. https://journal.universitasbumigora.ac.id/index.php/matrik/article/view/3459.