Pptp is faster. PPTP (Point-to-Point Tunneling Protocol) is the abbreviation of English Point-to-Point Tunneling Protocol. The default port number is 1723 (TCP), which is a network technology supporting multi-protocol virtual private networks. It works on the second floor. Through this protocol, remote users can access the company network safely through Microsoft Windows operating system and other systems equipped with point-to-point protocol, and dial into the local ISP through the Internet to connect to the company network safely.