70-216 - MOC 2153 - Configuring RAS - L4 - Configuring Inbound Connections
Terms
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- Routing and Remote Access uses several protocols to perform authentication, and also allows for the use of Extensible Authentication Protocols, through which you can load _-_ _.
- third-party protocols
- The _ uses clear-text passwords.
- Password Authentication Protocol (PAP)
- PAP protocol provides _ protection against unauthorized access.
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- SPAP
- The Shiva Password Authentication Protocol
- _-_ _ encryption mechanism employed by Shiva
- two-way reversible
- SPAP _ the _ data that is sent between the client and server and is, therefore, more secure than _
-
encrypts
password
PAP - CHAP
- Challenge Handshake Authentication Protocol
- Message Digest 5 [MD5]-CHAP
- CHAP
- CHAP is a _-_ authentication protocol
- challenge-response
- CHAP uses the industry-standard _ _-_ encryption scheme to encrypt the _, providing a _level of protection against unauthorized access
-
MD5 one-way
response
medium -
How CHAP works: Step 1
The authentication process works as follows:
The _ _ _sends a challenge-consisting of a _ _ and an arbitrary _ _-to the remote access client. -
remote access server
session identifier
challenge string -
How CHAP works: Step 2
The _ _ _ sends a response that contains the _ _and a _-_ _ of the challenge string, the session identifier, and the password. -
remote access client
user name
one-way encryption -
How CHAP works: Step 3
The remote access server _ _ _, and, if valid, allows the connection. - checks the response
- MS-CHAP
- Microsoft Challenge Handshake Authentication Protocol
- (MS-CHAP) is a _-_, _ password authentication protocol.
- -way, encrypted
- If the server uses MS-CHAP as the authentication protocol, it can use _ to encrypt data to the client or server
- MPPE
- Microsoft Point-to-Point Encryption
- (MPPE)
- On a remote access server running Windows 2000, _ is enabled by default.
- MS-CHAP
- MS-CHAP v2 provides _ _, stronger initial data encryption keys, and _ _ keys for sending and receiving.
-
mutual authentication
different encryption - For VPN connections, Windows 2000 Server offers _ before offering _. Windows 2000 _ and VPN connections can use _.
-
MS-CHAP v2
MS-CHAP
dial-up
MS?CHAP v2 -
Computers running _ and _ can use MS?CHAP v2 authentication for _ connections only.
Lesson Overview
Standard Authentication Protocols
Extensible Authentication Protocols
A -
NT
Win98
VPN