University of Khartoum

SSL VPN Performance Evaluation

SSL VPN Performance Evaluation

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Title: SSL VPN Performance Evaluation
Author: Hisham, Jihad
Abstract: Virtual Private Networks (VPN) have become of increasing interest as technique to connect remote networks and users, this interesting is exist by economic perspective since the leased lines is not suitable solution economically to connect two far networks or support remote access to network resources and where the internet access is spread allover the world . However the VPN must secure enough since we use internet, which is open to all users ,make it easy to hack private data so we must using high security protocols , most recently VPN use IPsec tunneling protocol to give need security and privacy to intranet and extranet VPN ,but is it the best solution ? A Secure Socket Layer protocol is introduced to be new solution, but is SSL VPN degrades or increases the network performance? This gives rise to the need for studies about SSL VPN to know the effects of the encryption of data and tunneling headers added to data be suitable for VPN on the performance measures like transfer rate, throughput, jitter, packet loss and etc. The purpose of this project is to design SSL VPN between two computers using open source called Openvpn and evaluate its performance, to give this more secure solution good advance to replace most currently used solution IPsec VPN. We have been successfully developed and implement our design and the performance of this SSL VPN has been successfully tested. It‟s found that in general the performance is not effected or effects is not noted with changing of encryption algorithm (each encryption algorithms has a different key size), except when measure include the header bits added for tunneling (tunneling: making VPN packet suitable with internet) like transfer rate and data access time of file which degraded with large key sizes e.g. AES key size (256 bit). Also there is a big difference in performance between encrypted data and unencrypted data. And also as good edition to the project we make a simple test to measure RTT and throughput on IPsec VPN give high values in RTT as suggested (around 7.24 ms).
Description: This project is to design SSL VPN between two computers using open source called Openvpn and evaluate its performance, to give this more secure solution good advance to replace most currently used solution IPsec VPN. We have been successfully developed and implement our design and the performance of this SSL VPN has been successfully tested.
URI: http://hdl.handle.net/123456789/52
Date: 2014-04-23


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