ANALISIS KOMPARASI PROTOKOL VIRTUAL PRIVATE NETWORK (VPN) PADA METODE PPTP, L2TP, SSTP, DAN OPEN VPN

Abstract

Virtual Private Network (VPN) is a network technology that allows encrypted data exchange between two or more users securely. From test results, the OpenVPN method shows the strongest encryption performance compared to PPTP, L2TP, and SSTP, because its code scrambling process takes longer, making it harder to breach. The main advantage of VPN is that every data sent will pass through a tunnel, providing a better level of security. Tunneling itself is a technique for moving data from one network to another by leveraging the internet as a hidden medium. Based on DoS attack tests, the PPTP and L2TP protocols produce a delivery time of 100 ms with a relatively large number of packets, while SSTP and OpenVPN record a shorter time of 2 ms with 28 data packets. Measurement results using QoS parameters show that OpenVPN has a Packet Loss value of 0% (satisfactory category), Average delay 0 ms (satisfactory), Jitter 17 ms (good), and stable Throughput. Among the four methods, PPTP achieved the highest throughput score of 3.428 Mbps, however, OpenVPN is rated more balanced because it supports both security and data transfer performance