PPTP is one of the protocols based on which virtual private networks are created . PPTP was developed in 1999 by a consortium composed of From companies such as Microsoft and 3Com. Starting with Windows 98 and NT, it is a standard feature of Microsoft systems.
With PPTP you can say that is a kind of standard and it would be hard to find a VPN provider that does not offer this protocol. Very often free VPN plans are based on PPTP, and access to other (better) protocols is only available after the subscription has been made. This is mainly because PPTP access is simple and does not require the installation of additional software. You can use it successfully based on the standard software available on most users' computers.
PPTP security is mainly based on 128-bit encryption, client authentication can be PAP, CHA, MS-CHAP, MS-CHAP v2 or EAP-TLS. PPTP is currently considered a non-secure protocol. This is due to weaknesses in authentication protocols that are not secure, have been compromised, and allow attackers to take over and decrypt PPTP data. Microsoft recommends using other protocols such as L2TP, IPSEC IKEv2 or SSTP.
Using PPTP is not recommended. Although it is widely offered and used (primarily on Microsoft systems), it does not require any additional software, let's think twice before we apply this protocol to your network security. Definitely better bet on more secure protocols like OpenVPN, L2TP / IPsec or SSTP.