RADIUS Accounting Client MIB
RFC 2620

quot;
      ::= { radiusAccClient 2 }

radiusAccServerTable OBJECT-TYPE
      SYNTAX SEQUENCE OF RadiusAccServerEntry
      MAX-ACCESS not-accessible
      STATUS     current
      DESCRIPTION
            "The (conceptual) table listing the RADIUS accounting
             servers with which the client shares a secret."
      ::= { radiusAccClient 3 }

radiusAccServerEntry OBJECT-TYPE
      SYNTAX     RadiusAccServerEntry
      MAX-ACCESS not-accessible
      STATUS     current
      DESCRIPTION
            "An entry (conceptual row) representing a RADIUS
             accounting server with which the client shares a secret."
      INDEX      { radiusAccServerIndex }

Aboba & Zorn                 Informational                      [Page 4]
RFC 2620              RADIUS Accounting Client MIB             June 1999

      ::= { radiusAccServerTable 1 }

RadiusAccServerEntry ::= SEQUENCE {
      radiusAccServerIndex                           Integer32,
      radiusAccServerAddress                         IpAddress,
      radiusAccClientServerPortNumber                Integer32,
      radiusAccClientRoundTripTime                   TimeTicks,
      radiusAccClientRequests                        Counter32,
      radiusAccClientRetransmissions                 Counter32,
      radiusAccClientResponses                       Counter32,
      radiusAccClientMalformedResponses              Counter32,
      radiusAccClientBadAuthenticators               Counter32,
      radiusAccClientPendingRequests                   Gauge32,
      radiusAccClientTimeouts                        Counter32,
      radiusAccClientUnknownTypes                    Counter32,
      radiusAccClientPacketsDropped                  Counter32
}

radiusAccServerIndex OBJECT-TYPE
      SYNTAX     Integer32 (1..2147483647)
      MAX-ACCESS not-accessible
      STATUS     current
      DESCRIPTION
            "A number uniquely identifying each RADIUS
             Accounting server with which this client
             communicates."
      ::= { radiusAccServerEntry 1 }

radiusAccServerAddress OBJECT-TYPE
      SYNTAX     IpAddress
      MAX-ACCESS read-only
      STATUS     current
      DESCRIPTION
            "The IP address of the RADIUS accounting server
             referred to in this table entry."
      ::= { radiusAccServerEntry 2 }

radiusAccClientServerPortNumber  OBJECT-TYPE
      SYNTAX Integer32 (0..65535)
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The UDP port the client is using to send requests to
             this server."
      ::= { radiusAccServerEntry 3 }

radiusAccClientRoundTripTime  OBJECT-TYPE
      SYNTAX TimeTicks

Aboba & Zorn                 Informational                      [Page 5]
RFC 2620              RADIUS Accounting Client MIB             June 1999

      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
             "The time interval between the most recent
             Accounting-Response and the Accounting-Request that
             matched it from this RADIUS accounting server."
      ::= { radiusAccServerEntry 4 }

-- Request/Response statistics
--
-- Requests = Responses + PendingRequests + ClientTimeouts
--
-- Responses - MalformedResponses - BadAuthenticators -
-- UnknownTypes - PacketsDropped = Successfully received

radiusAccClientRequests OBJECT-TYPE
      SYNTAX Counter32
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS Accounting-Request packets
             sent. This does not include retransmissions."
      ::= { radiusAccServerEntry 5 }

radiusAccClientRetransmissions OBJECT-TYPE
      SYNTAX Counter32
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS Accounting-Request packets
             retransmitted to this RADIUS accounting server.
             Retransmissions include retries where the
             Identifier and Acct-Delay have been updated, as
             well as those in which they remain the same."
      ::= { radiusAccServerEntry 6 }

radiusAccClientResponses OBJECT-TYPE
      SYNTAX Counter32
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS packets received on the
             accounting port from this server."
      ::= { radiusAccServerEntry 7 }

radiusAccClientMalformedResponses OBJECT-TYPE
      SYNTAX Counter32
      MAX-ACCESS read-only

Aboba & Zorn                 Informational                      [Page 6]
RFC 2620              RADIUS Accounting Client MIB             June 1999

      STATUS current
      DESCRIPTION
             "The number of malformed RADIUS Accounting-Response
              packets received from this server. Malformed packets
             include packets with an invalid length. Bad
             authenticators and unknown types are not included as
             malformed accounting responses."
      ::= { radiusAccServerEntry 8 }

radiusAccClientBadAuthenticators OBJECT-TYPE
      SYNTAX Counter32
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS Accounting-Response
             packets which contained invalid authenticators
             received from this server."
      ::= { radiusAccServerEntry 9 }

radiusAccClientPendingRequests OBJECT-TYPE
      SYNTAX Gauge32
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS Accounting-Request packets
             sent to this server that have not yet timed out or
             received a response. This variable is incremented when an
             Accounting-Request is sent and decremented due to
             receipt of an Accounting-Response, a timeout or
             a retransmission."
      ::= { radiusAccServerEntry 10 }

radiusAccClientTimeouts OBJECT-TYPE
     SYNTAX Counter32
     MAX-ACCESS read-only
     STATUS current
     DESCRIPTION
          "The number of accounting 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 an Accounting-Request as well as
           a timeout."
      ::= { radiusAccServerEntry  11 }

radiusAccClientUnknownTypes OBJECT-TYPE
      SYNTAX Counter32

Aboba & Zorn                 Informational                      [Page 7]
RFC 2620              RADIUS Accounting Client MIB             June 1999

      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS packets of unknown type which
             were received from this server on the accounting port."
      ::= { radiusAccServerEntry  12 }

radiusAccClientPacketsDropped OBJECT-TYPE
      SYNTAX Counter32
      MAX-ACCESS read-only
      STATUS current
      DESCRIPTION
            "The number of RADIUS packets which were received from
             this server on the accounting port and dropped for some
             other reason."
      ::= { radiusAccServerEntry  13 }

-- conformance information

radiusAccClientMIBConformance
          OBJECT IDENTIFIER ::= { radiusAccClientMIB 2 }
radiusAccClientMIBCompliances
          OBJECT IDENTIFIER ::= { radiusAccClientMIBConformance 1 }
radiusAccClientMIBGroups
          OBJECT IDENTIFIER ::= { radiusAccClientMIBConformance 2 }

-- compliance statements

radiusAccClientMIBCompliance MODULE-COMPLIANCE
     STATUS  current
     DESCRIPTION
           "The compliance statement for accounting clients
            implementing the RADIUS Accounting Client MIB."
     MODULE  -- this module
         MANDATORY-GROUPS { radiusAccClientMIBGroup }

     ::= { radiusAccClientMIBCompliances 1 }

-- units of conformance

radiusAccClientMIBGroup OBJECT-GROUP
     OBJECTS { radiusAccClientIdentifier,
               radiusAccClientInvalidServerAddresses,
               radiusAccServerAddress,
               radiusAccClientServerPortNumber,
               radiusAccClientRoundTripTime,
               radiusAccClientRequests,

Aboba & Zorn                 Informational                      [Page 8]
RFC 2620              RADIUS Accounting Client MIB             June 1999

               radiusAccClientRetransmissions,
               radiusAccClientResponses,
               radiusAccClientMalformedResponses,
               radiusAccClientBadAuthenticators,
               radiusAccClientPendingRequests,
               radiusAccClientTimeouts,
               radiusAccClientUnknownTypes,
               radiusAccClientPacketsDropped
         }
     STATUS  current
     DESCRIPTION
           "The basic collection of objects providing management of
            RADIUS Accounting Clients."
     ::= { radiusAccClientMIBGroups 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.

Aboba & Zorn                 Informational                      [Page 9]
RFC 2620              RADIUS Accounting Client MIB             June 1999

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

   [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., "RADIUS Accounting", RFC 2139, 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 opertions.

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

Aboba & Zorn                 Informational                     [Page 10]
RFC 2620              RADIUS Accounting Client MIB             June 1999

   radiusAccServerAddress
             This can be used to determine the address of the RADIUS
             accounting server with which the client is communicating.
             This information could be useful in mounting an attack on
             the acounting server, which may contain sensitive financial
             data.

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

Aboba & Zorn                 Informational                     [Page 11]
RFC 2620              RADIUS Accounting Client MIB             June 1999

8.  Authors' Addresses

   Bernard Aboba
   Microsoft Corporation
   One Microsoft Way
   Redmond, WA 98052

   Phone: 425-936-6605
   EMail: bernarda@microsoft.com

   Glen Zorn
   Microsoft Corporation
   One Microsoft Way
   Redmond, WA 98052

   Phone: 425-703-1559
   EMail: glennz@microsoft.com

Aboba & Zorn                 Informational                     [Page 12]
RFC 2620              RADIUS Accounting Client MIB             June 1999

9.  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
   distributed, in whole or in part, without restriction of any kind,
   provided that the above copyright notice and this paragraph are
   included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
   Internet organizations, except as needed for the purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet Standards process must be
   followed, or as required to translate it into languages other than
   English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assigns.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Acknowledgement

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

Aboba & Zorn                 Informational                     [Page 13]