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22 Cards in this Set
- Front
- Back
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RADIUS
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Remote Authentication Dial In User Service
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AAA
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Authentication, Authorization, and Accounting
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NAS
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Network Access Server
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Network Access Server
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- Gateway responsible for requesting, granting and managing user access to a network.
- Grants network access to the user - The RADIUS component responsible for managing and Accounting messages. - Communicates with the RADIUS server - A device |
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RAS
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Remote Access Server
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Remote Access Server
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<To be completed>
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Link-Layer Protocol
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<To be completed>
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Access-Request
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Message sent from RAS to RADIUS server, requesting authorization.
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Credentials
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<To be completed>
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Authentication Scheme
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<To be completed>
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Access-Accept
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The user is granted access.
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Access-Reject
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The user is unconditionally denied access to all requested network resources.
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Access-Challenge
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Requests additional information from the user such as a secondary password, PIN, token, or card.
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Authentication and Authorization Message Types
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Client to Server:
- Access-Request Server to Client: - Access-Accept; - Access-Reject; or - Access-Challenge |
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Reply-Message
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Optional attribute included with the RADIUS Server response that may contain a reason for the rejection (Access-Reject), the prompt for the challenge (Access-Challenge), or a welcome message for the accept (Access-Accept).
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Authorization Attributes
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Conveyed to the RAS stipulating terms of access to be granted.
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Accounting Messages
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(C = Client, S = Server)
C: Accounting-Request (acct_status_type=start) S: Accounting-Response C: Accounting-Request |
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Reply-Message
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Optional attribute included with the RADIUS Server response that may contain a reason for the rejection (Access-Reject), the prompt for the challenge (Access-Challenge), or a welcome message for the accept (Access-Accept).
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Authorization Attributes
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Conveyed to the RAS stipulating terms of access to be granted.
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Accounting Messages
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Client:
- Accounting-Request (acct_status_type=start) - Accounting-Request (acct_status_type=interim-update) - Accounting-Request (acct_status_type=stop) Server: - Accounting-Response |
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Realm
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A method of grouping users together, typically a domain, used by a RADIUS proxy...
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How are passwords obfuscated?
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Using a shared secret combined with the MD5 hashing algorithm.
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