The Impact of a Virtual private network (VPN) on a network (USING OPNET)

I will be doing my thesis on the impact a VPN has on a company’s network the thesis will require you to simulate/ model the performance of three or four different VPN configurations to determine their impact on a company's data communication network. Simulation software such as Opnet (or a simulation software of your choice) will be required to model the VPN configurations the effects of the VPN configurations must be tested and, analysis of the data collected from the simulations must show the different network performance that results from the use of alternative VPN setups. Finally, managerial recommendations must be made based on the analyses. References MUST be Harvard style.