rfc2618.txt

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RFC 2618            RADIUS Authentication Client MIB           June 1999


             included as malformed access responses."
      ::= { radiusAuthServerEntry 10 }

radiusAuthClientBadAuthenticators OBJECT-TYPE
      SYNTAX Counter32
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS Access-Response packets
             containing invalid authenticators or Signature
             attributes received from this server."
      ::= { radiusAuthServerEntry 11 }

radiusAuthClientPendingRequests OBJECT-TYPE
      SYNTAX Gauge32
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS Access-Request packets
             destined for this server that have not yet timed out
             or received a response. This variable is incremented
             when an Access-Request is sent and decremented due to
             receipt of an Acess-Accept, Access-Reject or
             Access-Challenge, a timeout or retransmission."
      ::= { radiusAuthServerEntry 12 }

radiusAuthClientTimeouts OBJECT-TYPE
     SYNTAX Counter32
     MAX-ACCESS read-only
     STATUS current
     DESCRIPTION
            "The number of authentication timeouts to this server.
             After a timeout the client may retry to the same
             server, send to a different server, or
             give up. A retry to the same server is counted as a
             retransmit as well as a timeout. A send to a different
             server is counted as a Request as well as a timeout."
      ::= { radiusAuthServerEntry  13 }

radiusAuthClientUnknownTypes OBJECT-TYPE
      SYNTAX Counter32
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS packets of unknown type which
             were received from this server on the authentication port."
      ::= { radiusAuthServerEntry  14 }




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radiusAuthClientPacketsDropped OBJECT-TYPE
      SYNTAX Counter32
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS packets of which were
             received from this server on the authentication port
             and dropped for some other reason."
      ::= { radiusAuthServerEntry  15 }


-- conformance information

radiusAuthClientMIBConformance
             OBJECT IDENTIFIER ::= { radiusAuthClientMIB 2 }
radiusAuthClientMIBCompliances
             OBJECT IDENTIFIER ::= { radiusAuthClientMIBConformance 1 }
radiusAuthClientMIBGroups
             OBJECT IDENTIFIER ::= { radiusAuthClientMIBConformance 2 }


-- compliance statements

radiusAuthClientMIBCompliance MODULE-COMPLIANCE
     STATUS  current
     DESCRIPTION
           "The compliance statement for authentication clients
            implementing the RADIUS Authentication Client MIB."
     MODULE  -- this module
            MANDATORY-GROUPS { radiusAuthClientMIBGroup }

     ::= { radiusAuthClientMIBCompliances 1 }


-- units of conformance

radiusAuthClientMIBGroup OBJECT-GROUP
     OBJECTS { radiusAuthClientIdentifier,
               radiusAuthClientInvalidServerAddresses,
               radiusAuthServerAddress,
               radiusAuthClientServerPortNumber,
               radiusAuthClientRoundTripTime,
               radiusAuthClientAccessRequests,
               radiusAuthClientAccessRetransmissions,
               radiusAuthClientAccessAccepts,
               radiusAuthClientAccessRejects,
               radiusAuthClientAccessChallenges,
               radiusAuthClientMalformedAccessResponses,



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RFC 2618            RADIUS Authentication Client MIB           June 1999


               radiusAuthClientBadAuthenticators,
               radiusAuthClientPendingRequests,
               radiusAuthClientTimeouts,
               radiusAuthClientUnknownTypes,
               radiusAuthClientPacketsDropped
            }
     STATUS  current
     DESCRIPTION
           "The basic collection of objects providing management of
            RADIUS Authentication Clients."
     ::= { radiusAuthClientMIBGroups 1 }

END

5.  References

   [1]  Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for
        Describing SNMP Management Frameworks", RFC 2571, April 1999.

   [2]  Rose, M., and K. McCloghrie, "Structure and Identification of
        Management Information for TCP/IP-based Internets", STD 16, RFC
        1155, May 1990.

   [3]  Rose, M., and K. McCloghrie, "Concise MIB Definitions", STD 16,
        RFC 1212, March 1991.

   [4]  Rose, M., "A Convention for Defining Traps for use with the
        SNMP", RFC 1215, Performance Systems International, March 1991.

   [5]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M. and S. Waldbusser, "Structure of Management Information
        Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

   [6]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M. and S. Waldbusser, "Textual Conventions for SMIv2", STD 58,
        RFC 2579, April 1999.

   [7]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M. and S. Waldbusser, "Conformance Statements for SMIv2", STD
        58, RFC 2580, April 1999.

   [8]  Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
        Network Management Protocol", STD 15, RFC 1157, May 1990.

   [9]  Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
        "Introduction to Community-based SNMPv2", RFC 1901, January
        1996.




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   [10] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
        "Transport Mappings for Version 2 of the Simple Network
        Management Protocol (SNMPv2)", RFC 1906, January 1996.

   [11] Case, J., Harrington D., Presuhn R., and B. Wijnen, "Message
        Processing and Dispatching for the Simple Network Management
        Protocol (SNMP)", RFC 2572, April 1999.

   [12] Blumenthal, U., and B. Wijnen, "User-based Security Model for
        Version 3 of the Simple Network Management Protocol (SNMPv3)",
        RFC 2574, April 1999.

   [13] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol
        Operations for Version 2 of the Simple Network Management
        Protocol (SNMPv2)", RFC 1905, January 1996.

   [14] Levi, D., Meyer, P., and B. Stewart, "SNMP Applications", RFC
        2573, April 1999.

   [15] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based Access
        Control Model for the Simple Network Management Protocol
        (SNMP)", RFC 2575, April 1999.

   [16] Rigney, C., Rubens, A., Simpson W. and S. Willens, "Remote
        Authentication Dial In User Service (RADIUS)", RFC 2138, April
        1997.

6.  Security Considerations

   There are no management objects defined in this MIB that have a MAX-
   ACCESS clause of read-write and/or read-create.  So, if this MIB is
   implemented correctly, then there is no risk that an intruder can
   alter or create any management objects of this MIB via direct SNMP
   SET operations.

   There are a number of managed objects in this MIB that may contain
   sensitive information. These are:

   radiusAuthServerAddress
             This can be used to determine the address of the RADIUS
             authentication server with which the client is
             communicating.  This information could be useful in
             mounting an attack on the authentication server.

   radiusAuthClientServerPortNumber This can be used to determine the
             port number on which the RADIUS authentication client is
             sending. This information could be useful in impersonating
             the client in order to send data to the authentication



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             server.

   It is thus important to control even GET access to these objects and
   possibly to even encrypt the values of these object when sending them
   over the network via SNMP.  Not all versions of SNMP provide features
   for such a secure environment.

   SNMPv1 by itself is not a secure environment. Even if the network
   itself is secure (for example by using IPSec), there is no control as
   to who on the secure network is allowed to access and GET/SET
   (read/change/create/delete) the objects in this MIB.

   It is recommended that the implementers consider the security
   features as provided by the SNMPv3 framework. Specifically, the use
   of the User-based Security Model RFC 2574 [12] and the View-based
   Access Control Model RFC 2575 [15] is recommended.  Using these
   security features, customer/users can give access to the objects only
   to those principals (users) that have legitimate rights to GET or SET
   (change/create/delete) them.

7.  Acknowledgments

   The authors acknowledge the contributions of the RADIUS Working Group
   in the development of this MIB.  Thanks to Narendra Gidwani of
   Microsoft, Allan C. Rubens of MERIT, Carl Rigney of Livingston and
   Peter Heitman of American Internet Corporation for useful discussions
   of this problem space.

8.  Authors' Addresses

   Bernard Aboba
   Microsoft Corporation
   One Microsoft Wy
   Redmond, WA 98052

   Phone: [phone]
   EMail: [e-mail]


   Glen Zorn
   Microsoft Corporation
   One Microsoft Way
   Redmond, WA 98052

   Phone: [phone]
   EMail: [e-mail]





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9.  Intellectural Property Statement

   The IETF takes no position regarding the validity or scope of any
   intellectual property or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; neither does it represent that it
   has made any effort to identify any such rights.  Information on the
   IETF's procedures with respect to rights in standards-track and
   standards-related documentation can be found in BCP-11.  Copies of
   claims of rights made available for publication and any assurances of
   licenses to be made available, or the result of an attempt made to
   obtain a general license or permission for the use of such
   proprietary rights by implementors or users of this specification can
   be obtained from the IETF Secretariat.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights which may cover technology that may be required to practice
   this standard.  Please address the information to the IETF Executive
   Director.






























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10.  Full Copyright Statement

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implmentation may be prepared, copied, published and
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   provided that the above copyright notice and this paragraph are
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   The limited permissions granted above are perpetual and will not be
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Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.



















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