Tài liệu Windows 2000 Authentication Protocols ppt

Authenticating and Permitting Remote Access
Copyright  2002 Microsoft Corporation. All Rights Reserved. Windows 2000 Authentication Protocols
Windows

 2000 Authentication Protocols
The following table describes the authentication protocols and their encryption
levels.

Protocol Supports
Encryption
level
Microsoft Challenge Handshake
Authentication Protocol (MS-
CHAP).Uses challenge response
authentication.
All Windows-based operating
systems for VPN and dial-up
connections.
Medium
Microsoft Challenge Handshake
Authentication Protocol version 2
(MS-CHAP v2).
Uses stronger data encryption keys
and different encryption keys for
sending and receiving.
All Windows-based operating
systems for VPN connections.
Windows 2000 and Windows NT
operating systems for dial-up
connections.
High

CHAP
Uses industry-standard Message
Digest 5 (MD5).
All Microsoft-based operating
systems and many non-Microsoft-
based operating systems.
Medium
Extensible Authentication Protocol
(EAP).Supports a framework for
highly secure authentication plug-in
components.
Windows 2000 operating systems
and some non-Microsoft-based
operating systems.
High
Password Authentication Protocol
(PAP).Uses plain text passwords.
All Microsoft-based operating
systems and many non-Microsoft-
based operating systems
Low