In this paper, we proposed to build a temporary testing system withvirtual machine (VM)technology for studying the performance issues (e.g., number ofsessions,load-sharingmechanism) and the availability of a newly built hybridSSL-VPNsystem before rolling out the service. Moreover, we had designedtesting casesto help locate the configuration bugs and/or improper settings, and use them as guidelines for re-adjusting the system configuration to meet the design considerations. As shown in the paper, using the VM technology helps make both thedeploymentand thetestof the SSL-VPN service to become more effective (e.g., easier to reconfigure the system, more scalable).
