Overview#Point-to-Point Protocol (PPP) is a Data-link Layer OSI-Model communications protocol used to establish a direct connection between two nodes.
Point-to-Point Protocol connects two routers directly without any other networking device in between.
Point-to-Point Protocol is used over many types of physical networks including serial cable, phone line, trunk line, Mobile Network telephone, specialized radio links, and fiber optic links such as SONET.
Two derivatives of Point-to-Point Protocol, Point-to-Point Protocol over Ethernet (PPPoE) and Point-to-Point Protocol over ATM (PPPoA), are used most commonly by Internet Service Providers (ISPs) to establish a Digital Subscriber Line (DSL) Internet service connection with customers.
More Information#There might be more information for this subject on one of the following:
- A Standard for the Transmission of IP Datagrams on Avian Carriers
- Extensible Authentication Protocol
- Message Passing Interface
- Password Authentication Protocol