Acronyms and Abbreviations

AH Authentication Header (IPsec)

CBC Cipher block chaining mode

CHAP Challenge-Handshake Authentication

Protocol

DDP Datagram Delivery Protocol (Apple)

DES Data Encryption Standard

ESP Encapsulating Security Payload (IPsec)

FTP File Transfer Protocol (IETF)

GRE Generic Routing Encapsulation (IETF)

HDLC High-level Data Link Control

HMAC Hashed message authentication code

HTTP Hypertext Transfer Protocol (IETF)

IETF Internet Engineering Task Force

IKE Internet Key Exchange (IETF)

IP Internet Protocol (IETF)

IPcomp IP Payload Compression Protocol

IPsec Secure Internet Protocol

IPv4/v6 Internet Protocol version 4/version 6

IPX Internetwork Packet Exchange (NetWare)

ISAKMP Internet Security Association and Key

Management Protocol (IETF)

ISP Internet service provider

LAN Local area network

L2F Layer 2 Forwarding (Cisco)

L2TP Layer 2 Tunneling Protocol (IETF)

MD5 Message Digest 5

MS Microsoft

NDIS Network Driver Interface Specification

(Microsoft/3Com)

NDS NetWare Directory Service (Novell)

NetBEUI NetBIOS Extended User Interface

(Microsoft)

NetBIOS Network Basic Input/Output System

(Microsoft)

ODI Open Data Link Interface (Novell)

OSI Open Systems Interconnection

PAP Password Authentication Protocol

PID Protocol Identifier (IP)

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