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Glossary

CHAP: challenge-handshake authentication protocol

DSL: digital subscriber line

IETF: Internet Engineering Task Force

IP: Internet protocol

IPsec: IP authentication and security protocols

MSCHAP: Microsoft CHAP

MPPE: Microsoft point-to-point encryption

PAC: PPTP access concentrator

PAP: password authentication protocol

PPP: point-to-point protocol

PPTP: point-to-point tunneling protocol

RAS: remote-access server

RFC: request for comment

VPN: virtual private network