Fauzan MF, Purwanti Y, Suprihadi D. DEVELOPMENT OF A CISCO PACKET TRACER-BASED FIREWALL CONFIGURATION LEARNING VIDEO FOR VOCATIONAL HIGH SCHOOL STUDENTS. J.IL.Pend.CB [Internet]. 2026 Feb. 18 [cited 2026 Apr. 16];13(1):193-206. Available from: https://jurnal.citrabakti.ac.id/index.php/jil/article/view/6330