Point-to-Point Protocol

The Point-to-Point Protocol (PPP) is used to establish a connection between two computers using a phone line. Many ISPs use PPP when providing customers with dial-up access. PPP is a low-level communications protocol used between two connected hosts, and handles such things as setting the network configuration (setting IP address, default gateway, etc.) of the connecting computer. The TCP-IP protocol suite works on top of PPP.