I have beeen looking at setting up a vpn to be able to hook up my pc to the office network. I don't know a whole lot about it but I ended up trying out Softether for the job just this weekend. It's a free and opensource project from the University of Tsukuba, Japan. It promises that it can achieve speeds far higher than Openvpn. It was really just a click next, next type setup both on client and server which was the reason I went for it over openvpn which seemed more complicated and would require me to handle DNS stuff etc. I was impressed that I was able to get it up and run a desktop application designed for a local network with a minimal increase in lagginess. I'd value the opinions of people more knowledgeable than I who may have tried it.