Couple of things: 1. You will able to use something like OpenVPN for windows/mac. But you will decode the configuration of the tunnel and encryption parameters

Couple of things: 1. You will able to use something like OpenVPN for windows/mac. But you will decode the configuration of the tunnel and encryption parameters from the Cisco VPN profile (try looking in your programs files/Cisco systems/... /profiles/ directory) 2. But using any other client will not really help to increase the throughput /performance. 3. Throughput is limited by WAN link (probably a slow DSL modem) and also university's VPN server. 4. I have used Cisco VPN to log in to university workstations during my grad school days. It was pretty good. I had 12x1 services at my apt. What type/speed of Internet service do you currently have?