@phdthesis{digilib19672,
           month = {January},
           title = {ANALISIS KEAMANAN DAN PERFORMANISASI VOIP
MENGGUNAKAN VPN BERBASIS GNU LINUX TRIXBOX PADA
JARINGAN WIFI},
          school = {UIN SUNAN KALIJAGA YOGYAKARTA},
          author = {NIM. 11651027 MUHAMMAD ISNAN ZAKARIA},
            year = {2016},
            note = {Bambang Sugiantoro, M.T.},
        keywords = {VoIP, VPN, Delay, Jitter, Packet Loss, Throughput, QoS},
             url = {https://digilib.uin-suka.ac.id/id/eprint/19672/},
        abstract = {Performance and security are one of most important thing for VoIP,
communication which keeps growing needs a good performance. Because the
development of communication, safety of communication more vurnerable about
the secrets, for knowing performance and safety VoIP use VPN need to do
analysis with VoIP system.
The kind of research used to know the quality of VoIP, experimental research that
about Laboratory based-research. Method that used to this research is NDLC
(network development life cycle) as for factors the quality of being tested is delay,
jitter, packet loss and throughput.
The results of analysis voip without using VPN but use NDLC Method ( network
development life cycle ) for testing delay with an Average 1.02ms, jitter 1.20ms,
packet loss 46 \%, and throughput 0.13mbit/sec. Testing voip using VPN with the
delay average 1.7ms, jitter 1.81ms, packet loss 56.5\%, and throughput
0.26mbit/sec.}
}