PPTP\L2TP vs OpenVPN

PPTP, L2TP and OpenVPN are very popular these days because they are easy to setup and use. OpenVPN is also a free and open source software application.

PPTP and L2TP/IpSec can be setup on most operating systems and devices (like iPad, iPhone and other mobile devices) while OpenVPN may not be available for some devices.

The main difference users can notice is that OpenVPN has an advantage over PPTP\L2TP because is more flexible. The OpenVPN protocol uses special configuration files for each server you want to use, even allowing users to choose between the UDP and TCP ports. As more and more countries are trying to block internet access (through the VPN) within that specified country, by blocking either the protocols or ports. Unlike like the other two (PTPP and L2tP), OpenVPN can be configured in such a way that the user can overcome almost any problem.

OpenVPN uses SSL/TLS security for encryption and provides many security and control features. It provides encryption of both the data and control channels using the OpenSSL library. It can also use the HMAC authentication feature to further enhance security.

PPTP or Point-to-Point Tunneling Protocol is a method used for creating Virtual Private Networks over the internet. It is developed by Microsoft. With its use, users can remotely access corporate networks from any Internet Service Provider (ISP) that supports the protocol. PPTP works at the datalink layer of the OSI model. The positive on this protocol is that in can be configured in your PC/Mac/Device.

L2TP/IpSec Layer 2 Tunneling Protocol/IP Security or L2TP/IpSec is a tunneling protocol that allows remote users to access the common network. L2TP lets a Point-to-Point Protocol (PPP) session travel over several networks and links. The positive is that, like the PPTP can be configured on many devices (ex: phones, smartphones).



Speed


OpenVPN
When used in its default UDP mode, OpenVPN provides the best performance.


PPTP/L2TP
The speeds are almost the same, L2TP may top the PPTP but the difference is negligible.
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