Point-to-Point Protocol (PPP)

Point-to-Point Protocol (PPP) is a data communication protocol used to establish a direct connection between two network devices, such as computers or routers over serial links like phone lines or dedicated circuits. It manages the connection, authenticates the devices, and negotiates technical settings to ensure proper data transfer. PPP is widely used in dial-up internet access and VPNs because it supports multiple network layer protocols, making it flexible for various networking needs. Essentially, PPP ensures a reliable, secure, and compatible communication link between two points.