Point-to-Point Protocol (PPP)

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The Point-to-Point Protocol (PPP) is an encapsulation protocol that works at the Data Link layer (layer 2).

• used to encapsulate IP packets for transmission over serial digital lines
• has no security mechanisms
  • must be used with other protocols to provision a secure tunnel
• e.g.,
  • Microsoft’s Point-to-Point Tunneling Protocol (PPTP)