Abstract :
ABSTRACT
In the process of data exchange between headquarters and branch
offices required technology that can secure the data. VPN is a technology that
makes personal network (private) by using the public network in order to
secure data exchange process, as applied in Dinhubkominfo Banyumas. Data
exchanged by Dinhubkominfo have the shape of text data to service FTP,
HTTP, financial data and attendance data. These data is important data that
needs to be safeguarded, especially financial data. PPTP (Point to Point
Tunneling Protocol) and L2TP (Layer 2 Tunneling Protocol) is a VPN protocol
options that can be used to exchange data between different networks. In this
research, testing between both protocols by observing the parameters of
throughput, delay, jitter, and packet loss to know which protocol has the best
performance. The process of data collection is done using FTP and HTTP
services with the addition of the traffic load of 512 kbps, 1024 kbps and 2048
kbps. From observation it was found that the performance of PPTP is better
than L2TP refers to the results obtained in this study. On the FTP service, the
value of the PPTP throughput greater 3,375 KBps than L2TP, PPTP delay
values smaller 3.513 ms than L2TP, PPTP jitter values smaller 1.077 ms than
L2TP. In HTTP service, PPTP throughput value greater 2,959 KBps than
L2TP, PPTP delay value smaller 2.11 ms than L2TP, PPTP jitter values
smaller 2.062 ms than L2TP. However, both PPTP and L2TP packet loss has a
value of 0%, which means that no packets are lost during data transmission.
Keywords : VPN, Tunneling, PPTP, L2TP, dan QoS