What is PPP

Point-to-Point Protocol (PPP) is a TCP/IP protocol that is used to connect one computer system to another. Computers use PPP to communicate over the telephone network or the Internet.

A PPP connection exists when two systems physically connect through a telephone line. You can use PPP to connect one system to another. For example, an established PPP connection between a branch office and a central office allows either office to transfer data to the other through the network.

PPP allows interoperability among the remote access software of different manufacturers. It also allows multiple network communication protocols to use the same physical communication line.

The following Request for Comment (RFC) standards describe the PPP protocol. You can find more information about the RFCs on the RFC Editor Web page Link outside Information Center.

  • RFC-1661 Point-to-Point Protocol
  • RFC-1662 PPP on HDLC-like framing
  • RFC-1994 PPP CHAP
  • RFC-5072 IP Version 6 over PPP