munir, Zainul. “RANCANG BANGUN IP PUBLIC BERBASIS VPN SERVER DAN PORT FORWARDING UNTUK MAIL SERVER PADA CV PACIFIC COMPUTER BATAM”. JURSIMA 5, no. 2 (November 17, 2017): 1-13. Accessed January 9, 2025. https://ojsiibn1.indobarunasional.ac.id/index.php/jursima/article/view/44.