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Point-to-Point Tunneling Protocol
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Network Layer — Security & VPN
Protocol Overview
Full Name
Point-to-Point Tunneling Protocol
Abbreviation
PPTP
OSI Layer
Network Layer
Category
Security & VPN
Default Port
1723
RFC
RFC 2637
About PPTP
Early VPN tunneling protocol developed by Microsoft. Deprecated due to serious cryptographic vulnerabilities in MS-CHAPv2. Should not be used in any security-sensitive context.
Network Layer
Security & VPN
Port 1723
Standards Reference
PPTP is defined in RFC 2637, published by the Internet Engineering Task Force (IETF). RFCs are the official standards documents for internet protocols and are freely available for public review.