Ramadhani, Surya Tri Atmaja, 		Puri, Fiyas, AND 		Huda, Amirudin.
" Enhanced security of Linux Server-based servers with a combination of iptables and Knocking Ports" <em>Jurnal Sistem Telekomunikasi Elektronika Sistem Kontrol Power Sistem dan Komputer</em> [Online], Volume 4 Number 2 (19 August 2024)