408113 VPN client/server

Hello, I'm searching a developer who masterize linux (debian) and C++ to realize my project of VPN. This one isn't started yet, but I search anyone able to do it. The VPN have to support : PPTP OpenVPN Both system have to work with a database on another server thanks to Freeradius. Moreover, the VPN have to support : -Only one connexion by user -Limit traffic (for instance, 100GB/month/user) -To have a port open on the tunnel to the user. Of course, I'm searching someone able to realize client and server side, this is why you will need to know C++. I have source of one client upon witch you can help you. The client also have to : -Show the open port on the tunnel to the user -Support the load-ballancing I offer for this project ~1500$ If you are interested by this project, contact me.