As you know what VPN is? But you need to know the purpose of VPN and its protocols. Here we are discussing on 6 best VPN protocols which are given below. PPTP An elementary VPN protocol founded on PPP. PPTP was the initial VPN protocol buoyed on the Windows. The PPTP does not essentially refer to encryption or verification structures. Because of the key security weaknesses, that is why no one can recommend to pick PPTP except device compatibility. If you have a device that is not offering L2TP or OpenVPN, then it perhaps a equitable choice. It is easy to setup on any operating systems and easy to configure with. It is compatible with almost every operating systems like Windows, MacOS, Linux, Android and iOS. For more detail PPTP VPN L2TP L2TP or Layer 2 Tunneling Protocol is an advancement of PPTP but more secure as compare to PPTP. For security, it frequently integrated with IPSec which promises extremely stout encryption on data packet at the outlay of speed.