search for: deadicated

Hi list, I have to build vpn server for 1500 clients. No encryption necessary. can anyone please recommend me vpn server. I do not have experience on vpn. I have tested openvpn on my test setup, & its working fine. I want to check if there any other vpn server available. I have not checked but can pptp vpn be usefull? My requirement is to connect 1500 clients on vpn server. Need