Network Working Group                                          D. Nelson
Internet-Draft                                        Enterasys Networks
Updates:
Obsoletes: RFC 2620 (if approved)                          August 30,                       October 18, 2005
Expires: March 3, April 21, 2006

                     RADIUS Acct Client MIB (IPv6)
                  draft-ietf-radext-rfc2620bis-00.txt
                  draft-ietf-radext-rfc2620bis-01.txt

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Copyright Notice

   Copyright (C) The Internet Society (2005).

Abstract

   This memo updates obsoletes RFC 2620 by deprecating the MIB table containing
   IPv4-only address formats and defining a new table to add support for
   version neutral IP address formats.  The remaining MIB objects from
   RFC 2620 are carried forward into this document.

Table of Contents

   1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  The Internet-Standard Management Framework . . . . . . . . . .  3
   4.  Scope of Changes . . . . . . . . . . . . . . . . . . . . . . .  3
   5.  Structure of the MIB Module  . . . . . . . . . . . . . . . . .  4
   6.  Deprecated Objects . . . . . . . . . . . . . . . . . . . . . .  4
   7.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . .  4  5
   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 16
   9.  Security Considerations  . . . . . . . . . . . . . . . . . . . 16
   10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 17
     10.1.  Normative References  . . . . . . . . . . . . . . . . . . 17
     10.2.  Informative References  . . . . . . . . . . . . . . . . . 18
   Appendix A.  Acknowledgments . . . . . . . . . . . . . . . . . . . 18
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 19
   Intellectual Property and Copyright Statements . . . . . . . . . . 20

1.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

   This document uses terminology from RFC 2866 [RFC2866].

2.  Introduction

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   The objects defined within this memo relate to the Remote
   Authentication Dial-In User Service (RADIUS) Accounting Client as
   defined in RFC 2866 [RFC2866].

3.  The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in STD 58,
   RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
   [RFC2580].

4.  Scope of Changes

   This document updates obsoletes RFC 2620 [RFC2620], RADIUS Authentication
   Client MIB, by deprecating the radiusAuthServerTable table and adding
   a new table, radiusAuthServerExtTable, containing
   radiusAuthServerInetAddressType, radiusAuthServerInetAddress, and
   radiusAuthClientServerInetPortNumber.  The purpose of these added MIB
   objects is to support version neutral IP addressing formats.  The
   existing table containing radiusAuthServerAddress and
   radiusAuthClientServerPortNumber is deprecated.  The remaining MIB
   objects from RFC 2620 are carried forward into this document.

   RFC 4001 [RFC4001], which defines the SMI Textual Conventions for
   IPv6 addresses, contains the following recommendation.

   'In particular, when revising a MIB module that contains IPv4
   specific tables, it is suggested to define new tables using the
   textual conventions defined in this memo [RFC 4001] that support all
   versions of IP.  The status of the new tables SHOULD be "current",
   whereas the status of the old IP version specific tables SHOULD be
   changed to "deprecated".  The other approach, of having multiple
   similar tables for different IP versions, is strongly discouraged.'

5.  Structure of the MIB Module

   The structure of the MIB Module defined RADIUS accounting protocol, described in this memo corresponds to RFC 2866 [RFC2866],
   distinguishes between the structure of client function and the MIB Module defined in server function.
   In RADIUS Authentication
   Client accounting, clients send Accounting-Requests, and servers
   reply with Accounting-Responses.  Typically NAS devices implement the
   client function, and thus would be expected to implement the RADIUS
   accounting client MIB, RFC 2620 [RFC2620]. while RADIUS accounting servers implement the
   server function, and thus would be expected to implement the RADIUS
   accounting server MIB.

   However, it is possible for a RADIUS accounting entity to perform
   both client and server functions.  For example, a RADIUS proxy may
   act as a server to one or more RADIUS accounting clients, while
   simultaneously acting as an accounting client to one or more
   accounting servers.  In such situations, it is expected that RADIUS
   entities combining client and server functionality will support both
   the client and server MIBs.

   This MIB module contains two scalars as well as a single table, the
   RADIUS Accounting Server Table, which contains one row for each
   RADIUS server with which the client shares a secret.  Each entry in
   the RADIUS Accounting Server Table includes fifteen columns
   presenting a view of the activity of the RADIUS client.

6.  Deprecated Objects

   The deprecated table in this MIB is carried forward from RFC 2620
   [RFC2620].  There are two conditions under which it MAY be desirable
   for managed entities to continue to support the deprecated table:

   1.  The managed entity only supports IPv4 address formats.
   2.  The managed entity supports both IPv4 and IPv6 address formats,
       and the deprecated table is supported for backwards compatibility
       with older management stations.  This option SHOULD only be used
       when the IP addresses in the new table are in IPv4 format and can
       accurately be represented in both the new table and the
       deprecated table.

   Managed entities SHOULD NOT instantiate the deprecated table
   containing IPv4-only address objects when the RADIUS server address
   represented in the table row is not an IPv4 address.  Managed
   entities SHOULD NOT return inaccurate values of IP address or SNMP
   object access errors for IPv4-only address objects in otherwise
   populated tables.

7.  Definitions

   RADIUS-ACCT-CLIENT-MIB DEFINITIONS ::= BEGIN

   IMPORTS
          MODULE-IDENTITY, OBJECT-TYPE, OBJECT-IDENTITY,
          Counter32, Integer32, Gauge32,
          IpAddress, TimeTicks, mib-2      FROM SNMPv2-SMI
          SnmpAdminString                  FROM SNMP-FRAMEWORK-MIB
          InetAddressType, InetAddress,
          InetPortNumber                   FROM INET-ADDRESS-MIB
          MODULE-COMPLIANCE, OBJECT-GROUP  FROM SNMPv2-CONF;

   radiusAccClientMIB MODULE-IDENTITY
          LAST-UPDATED "200508300000Z" "200510170000Z" -- 30 Aug 17 Oct 2005
          ORGANIZATION "IETF RADIUS Extensions Working Group."
          CONTACT-INFO
                 " Bernard Aboba
                   Microsoft
                   One Microsoft Way
                   Redmond, WA  98052
                   US
                   Phone: +1 425 936 6605
                   EMail: bernarda@microsoft.com"
          DESCRIPTION
                "The MIB module for entities implementing the client
                 side of the Remote Authentication Dial-In User Service
                 (RADIUS) accounting protocol."
          REVISION "9906110000Z" "200510170000Z"  -- 11 Jun 1999 17 Oct 2005
          DESCRIPTION "Initial "Revised version as published in RFC 2620" xxxx.
          This version obsoletes that of RFC 2620 by deprecating the
          MIB table containing IPv4-only address formats and defining a
          new table to add support for version neutral IP address
          formats. The remaining MIB objects from RFC 2620 are carried
          forward into this version."
          REVISION "200508300000Z" "9906110000Z"    -- 30 Aug 2005 11 Jun 1999
          DESCRIPTION "Revised "Initial version as published in RFC xxxx" 2620"

   -- RFC Editor: replace xxxx with actual RFC number at the time of
   -- publication, and remove this note.

         ::= { radiusAccounting 2 }

   radiusMIB OBJECT-IDENTITY
         STATUS  current
         DESCRIPTION
                "The OID assigned to RADIUS MIB work by the IANA."
         ::= { mib-2 67 }

   radiusAccClientExtMIB OBJECT-IDENTITY
         STATUS  current
         DESCRIPTION
                "The OID assigned to RADIUS Extensions MIB work by
                 the IANA."
         ::= { mib-2 TBA }
   -- RFC Editor: replace TBA with IANA assigned OID value, and
   -- remove this note.

   radiusAccounting  OBJECT IDENTIFIER ::= {radiusMIB 2}

   radiusAccClientMIBObjects     OBJECT IDENTIFIER
         ::= { radiusAccClientMIB 1 }

   radiusAccClient  OBJECT IDENTIFIER
         ::= { radiusAccClientMIBObjects 1 }

   radiusAccClientInvalidServerAddresses OBJECT-TYPE
         SYNTAX Counter32
         MAX-ACCESS read-only
         STATUS current
         DESCRIPTION
               "The number of RADIUS Accounting-Response packets
                received from unknown addresses."
         ::= { radiusAccClient 1 }

   radiusAccClientIdentifier OBJECT-TYPE
         SYNTAX SnmpAdminString
         MAX-ACCESS read-only
         STATUS current
         DESCRIPTION
               "The NAS-Identifier of the RADIUS accounting client.
                This is not necessarily the same as sysName in MIB
                II."
         ::= { radiusAccClient 2 }

   radiusAccServerTable OBJECT-TYPE
         SYNTAX SEQUENCE OF RadiusAccServerEntry
         MAX-ACCESS not-accessible
         STATUS     deprecated
         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     deprecated
         DESCRIPTION
               "An entry (conceptual row) representing a RADIUS
                accounting server with which the client shares a
                secret."
         INDEX      { radiusAccServerIndex }
         ::= { 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     deprecated
         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     deprecated
         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 deprecated
         DESCRIPTION
               "The UDP port the client is using to send requests to
                this server."
         ::= { radiusAccServerEntry 3 }

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

   -- Extended New MIB Objects

   radiusAccClientExtMIBObjects     OBJECT IDENTIFIER
         ::= { radiusAccClientExtMIB 1 }

   radiusAccClientExt  OBJECT IDENTIFIER
         ::= { radiusAccClientExtMIBObjects 1 } objects added in this revision

   radiusAccServerExtTable OBJECT-TYPE
         SYNTAX SEQUENCE OF RadiusAccServerExtEntry
         MAX-ACCESS not-accessible
         STATUS     current
         DESCRIPTION
               "The (conceptual) table listing the RADIUS accounting
                servers with which the client shares a secret."
         ::= { radiusAccClientExt 1 radiusAccClient 4 }

   radiusAccServerExtEntry OBJECT-TYPE
         SYNTAX     RadiusAccServerExtEntry
         MAX-ACCESS not-accessible
         STATUS     current
         DESCRIPTION
               "An entry (conceptual row) representing a RADIUS
                accounting server with which the client shares a
                secret."
         INDEX      { radiusAccServerExtIndex }
         ::= { radiusAccServerExtTable 1 }

   RadiusAccServerExtEntry ::= SEQUENCE {
         radiusAccServerExtIndex                    Integer32,
         radiusAccServerInetAddressType             InetAddressType,
         radiusAccServerInetAddress                 InetAddress,
         radiusAccClientServerInetPortNumber        InetPortNumber,
         radiusAccClientExtRoundTripTime            TimeTicks,
         radiusAccClientExtRequests                 Counter32,
         radiusAccClientExtRetransmissions          Counter32,
         radiusAccClientExtResponses                Counter32,
         radiusAccClientExtMalformedResponses       Counter32,
         radiusAccClientExtBadAuthenticators        Counter32,
         radiusAccClientExtPendingRequests          Gauge32,
         radiusAccClientExtTimeouts                 Counter32,
         radiusAccClientExtUnknownTypes             Counter32,
         radiusAccClientExtPacketsDropped           Counter32
   }

   radiusAccServerExtIndex 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."
         ::= { radiusAccServerExtEntry 1 }

   radiusAccServerInetAddressType OBJECT-TYPE
            SYNTAX     InetAddressType
            MAX-ACCESS read-only
            STATUS     current
            DESCRIPTION
                  "The type of address format used for the
                   radiusAccServerInetAddress object."
            ::= { radiusAccServerExtEntry 2 }

      radiusAccServerInetAddress OBJECT-TYPE
            SYNTAX     InetAddress
            MAX-ACCESS read-only
            STATUS     current
            DESCRIPTION
                  "The IP address of the RADIUS accounting
                   server referred to in this table entry, using
                   the IPv6 version neutral IP adddess format."
            ::= { radiusAccServerExtEntry 3 }

      radiusAccClientServerInetPortNumber  OBJECT-TYPE
            SYNTAX InetPortNumber
            MAX-ACCESS read-only
            STATUS current
            DESCRIPTION
                  "The UDP port the client is using to send requests
                   to this accounting server."
            ::= { radiusAccServerExtEntry 4 }

   radiusAccClientExtRoundTripTime  OBJECT-TYPE
         SYNTAX TimeTicks
         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."
         ::= { radiusAccServerExtEntry 5 }

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

   radiusAccClientExtRequests OBJECT-TYPE
         SYNTAX Counter32
         MAX-ACCESS read-only
         STATUS current
         DESCRIPTION
               "The number of RADIUS Accounting-Request packets
                sent. This does not include retransmissions."
         ::= { radiusAccServerExtEntry 6 }

   radiusAccClientExtRetransmissions 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."
         ::= { radiusAccServerExtEntry 7 }

   radiusAccClientExtResponses OBJECT-TYPE
         SYNTAX Counter32
         MAX-ACCESS read-only
         STATUS current
         DESCRIPTION
               "The number of RADIUS packets received on the
                accounting port from this server."
         ::= { radiusAccServerExtEntry 8 }

   radiusAccClientExtMalformedResponses OBJECT-TYPE
         SYNTAX Counter32
         MAX-ACCESS read-only
         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."
         ::= { radiusAccServerExtEntry 9 }

   radiusAccClientExtBadAuthenticators 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."
         ::= { radiusAccServerExtEntry 10 }

   radiusAccClientExtPendingRequests 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."
         ::= { radiusAccServerExtEntry 11 }

   radiusAccClientExtTimeouts 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."
         ::= { radiusAccServerExtEntry  12 }

   radiusAccClientExtUnknownTypes 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 accounting port."
         ::= { radiusAccServerExtEntry  13 }

   radiusAccClientExtPacketsDropped 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."
         ::= { radiusAccServerExtEntry  14 }

   -- conformance information

   radiusAccClientMIBConformance  OBJECT IDENTIFIER
         ::= { radiusAccClientMIB 2 }

   radiusAccClientMIBCompliances  OBJECT IDENTIFIER
         ::= { radiusAccClientMIBConformance 1 }

   radiusAccClientMIBGroups  OBJECT IDENTIFIER
         ::= { radiusAccClientMIBConformance 2 }

   radiusAccClientExtMIBConformance  OBJECT IDENTIFIER
         ::= { radiusAccClientExtMIB 2 }

   radiusAccClientExtMIBCompliances OBJECT IDENTIFIER
         ::= { radiusAccClientExtMIBConformance 1 }

   radiusAccClientExtMIBGroups  OBJECT IDENTIFIER
          ::= { radiusAccClientExtMIBConformance 2 }

   -- units of conformance

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

        ::= { radiusAccClientMIBCompliances 1 }

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

        ::= { radiusAccClientExtMIBCompliances 1 radiusAccClientMIBCompliances 2 }

   -- units of conformance

   radiusAccClientMIBGroup OBJECT-GROUP
        OBJECTS { radiusAccClientIdentifier,
                  radiusAccClientInvalidServerAddresses,
                  radiusAccServerAddress,
                  radiusAccClientServerPortNumber,
                  radiusAccClientRoundTripTime,
                  radiusAccClientRequests,
                  radiusAccClientRetransmissions,
                  radiusAccClientResponses,
                  radiusAccClientMalformedResponses,
                  radiusAccClientBadAuthenticators,
                  radiusAccClientPendingRequests,
                  radiusAccClientTimeouts,
                  radiusAccClientUnknownTypes,
                  radiusAccClientPacketsDropped
            }
        STATUS  deprecated
        DESCRIPTION
              "The basic collection of objects providing management of
               RADIUS Accounting Clients."
        ::= { radiusAccClientMIBGroups 1 }

   radiusAccClientExtMIBGroup OBJECT-GROUP
        OBJECTS { radiusAccClientIdentifier,
                  radiusAccClientInvalidServerAddresses,
                  radiusAccServerInetAddressType,
                  radiusAccServerInetAddress,
                  radiusAccClientExtServerInetPortNumber,
                  radiusAccClientServerInetPortNumber,
                  radiusAccClientExtRoundTripTime,
                  radiusAccClientExtRequests,
                  radiusAccClientExtRetransmissions,
                  radiusAccClientExtResponses,
                  radiusAccClientExtMalformedResponses,
                  radiusAccClientExtBadAuthenticators,
                  radiusAccClientExtPendingRequests,
                  radiusAccClientExtTimeouts,
                  radiusAccClientExtUnknownTypes,
                  radiusAccClientExtPacketsDropped
            }
        STATUS  current
        DESCRIPTION
              "The basic collection of objects providing management of
               RADIUS Accounting Clients."
        ::= { radiusAccClientExtMIBGroups 1 radiusAccClientMIBGroups 2 }

   END

8.  IANA Considerations

   This document requires no new IANA assignment of a number in the MIB-2 OID
   number space. assignments.

9.  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:

   radiusAcctServerIPAddress 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 accounting server.

   radiusAcctServerInetAddress 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 accounting server.

   radiusAcctClientServerPortNumber 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 data to the accounting server.

   radiusAcctClientServerInetPortNumber 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 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.

   SNMP versions prior to SNMPv3 do not provide 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 [RFC2574] and the View-based Access
   Control Model [RFC2575] 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.

10.  References

10.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2574]  Blumenthal, U. and B. Wijnen, "User-based Security Model
              (USM) for version 3 of the Simple Network Management
              Protocol (SNMPv3)", RFC 2574, April 1999.

   [RFC2575]  Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based
              Access Control Model (VACM) for the Simple Network
              Management Protocol (SNMP)", RFC 2575, April 1999.

   [RFC2578]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Structure of Management Information
              Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

   [RFC2579]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Textual Conventions for SMIv2",
              STD 58, RFC 2579, April 1999.

   [RFC2580]  McCloghrie, K., Perkins, D., and J. Schoenwaelder,
              "Conformance Statements for SMIv2", STD 58, RFC 2580,
              April 1999.

   [RFC3410]  Case, J., Mundy, R., Partain, D., and B. Stewart,
              "Introduction and Applicability Statements for Internet-
              Standard Management Framework", RFC 3410, December 2002.

   [RFC3418]  Presuhn, R., "Management Information Base (MIB) for the
              Simple Network Management Protocol (SNMP)", STD 62,
              RFC 3418, December 2002.

   [RFC4001]  Daniele, M., Haberman, B., Routhier, S., and J.
              Schoenwaelder, "Textual Conventions for Internet Network
              Addresses", RFC 4001, February 2005.

10.2.  Informative References

   [RFC2620]  Aboba, B. and G. Zorn, "RADIUS Accounting Client MIB",
              RFC 2620, June 1999.

   [RFC2866]  Rigney, C., "RADIUS Accounting", RFC 2866, June 2000.

Appendix A.  Acknowledgments

   The Authors of the original MIB are Bernard Aboba and Glen Zorn.

   Many thanks to all reviewers, especially to Dave Harrington, Dan
   Romascanu, C.M. Heard, Bruno Pape and Greg Weber.

Author's Address

   David B. Nelson
   Enterasys Networks
   50 Minuteman Road
   Andover, MA  01810
   USA

   Email: dnelson@enterasys.com

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