Point to Point Tunneling Protocol (PPTP) is one of the oldest protocols by Microsoft, and it’s also pretty darn fast. In fact, it is the fastest of all VPN protocols. That means it’s a great option for applications where speed is important such as streaming and gaming. That being said, PPTP is not as secure because of its weak encryption standard.
When used for remote access over the Internet, PPTP uses the TCP port 1723 for communication which uses the Generic Routing Encapsulation (GRE) protocol to encapsulate PPP packets. When initiated from the client side, PPTP tunneling doesn’t need devices like routers, etc.
PPTP is not only very easy to set up but also compatible with most desktop and mobile operating systems. And that’s why people uses the PPTP protocol when speed is more important than security. But sometimes you gotta try another protocol, because PPTP might rock for speed, but it has many well-known vulnerabilities.
The PPTP protocol uses the GRE and TCP port 1723 for smooth data transmission.
While some only enable you to tunnel Internet Protocol (IP) packets, PPTP has the ability to tunnel all RAS supported protocols.
Due to low level encryption, it offers highest speed as compared to other protocols. (It’s a toss up! What do you want, speed or security?)