| Rfc | 4670 |
|---|
| Title | RADIUS Accounting Client MIB for IPv6 |
|---|
| Author | D. Nelson |
|---|
| Date | August 2006 |
|---|
| Format: | TXT, HTML |
|---|
| Obsoletes | RFC2620 |
|---|
| Status: | INFORMATIONAL |
|---|
|
Network Working Group D. Nelson
Request for Comments: 4670 Enterasys Networks
Obsoletes: 2620 August 2006
Category: Informational
RADIUS Accounting Client MIB for IPv6
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2006).
Abstract
This memo defines a set of extensions that instrument RADIUS
accounting client functions. These extensions represent a portion of
the Management Information Base (MIB) for use with network management
protocols in the Internet community. Using these extensions,
IP-based management stations can manage RADIUS accounting clients.
This memo 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. This memo also adds
UNITS and REFERENCE clauses to selected objects.
Table of Contents
1. Introduction ....................................................3
2. Terminology .....................................................3
3. The Internet-Standard Management Framework ......................3
4. Scope of Changes ................................................3
5. Structure of the MIB Module .....................................4
6. Deprecated Objects ..............................................5
7. Definitions .....................................................5
8. Security Considerations ........................................19
9. References .....................................................20
9.1. Normative References ......................................20
9.2. Informative References ....................................21
Appendix A. Acknowledgements ......................................22
1. 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].
2. 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 2865 [RFC2865] and RFC 2866
[RFC2866].
This document uses the word "malformed" with respect to RADIUS
packets, particularly in the context of counters of "malformed
packets". While RFC 2866 does not provide an explicit definition of
"malformed", malformed generally means that the implementation has
determined the packet does not match the format defined in RFC 2866.
Those implementations are used in deployments today, and thus set the
de facto definition of "malformed".
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 obsoletes RFC 2620 [RFC2620], RADIUS Accounting Client
MIB, by deprecating the radiusAccServerTable table and adding a new
table, radiusAccServerExtTable, containing
radiusAccServerInetAddressType, radiusAccServerInetAddress, and
radiusAccClientServerInetPortNumber. 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 [RFC4001] 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 RADIUS accounting protocol, described in RFC 2866 [RFC2866],
distinguishes between the client function and the server function.
In RADIUS accounting, clients send Accounting-Requests, and servers
reply with Accounting-Responses. Typically, Network Access Server
(NAS) devices implement the client function, and thus would be
expected to implement the RADIUS accounting client MIB, 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. The client MIB is defined in this
document, and the server MIB is defined in [RFC4671].
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.
This MIB imports from [RFC2578], [RFC2580], [RFC3411], and [RFC4001].
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 row entries in the deprecated
table, containing IPv4-only address objects, when the RADIUS
accounting server address represented in such a 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. When row entries exist in
both the deprecated IPv4-only table and the new IP-version-neutral
table that describe the same RADIUS accounting server, the row
indexes SHOULD be the same for the corresponding rows in each table,
to facilitate correlation of these related rows by management
applications.
7. Definitions
RADIUS-ACC-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 "200608210000Z" -- 21 August 2006
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. Copyright (C) The
Internet Society (2006). This version of this MIB
module is part of RFC 4670; see the RFC itself for
full legal notices."
REVISION "200608210000Z" -- 21 August 2006
DESCRIPTION
"Revised version as published in RFC 4670.
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 "199906110000Z" -- 11 Jun 1999
DESCRIPTION "Initial version as published in RFC 2620."
::= { radiusAccounting 2 }
radiusMIB OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The OID assigned to RADIUS MIB work by the IANA."
::= { mib-2 67 }
radiusAccounting OBJECT IDENTIFIER ::= {radiusMIB 2}
radiusAccClientMIBObjects OBJECT IDENTIFIER
::= { radiusAccClientMIB 1 }
radiusAccClient OBJECT IDENTIFIER
::= { radiusAccClientMIBObjects 1 }
radiusAccClientInvalidServerAddresses OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
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."
REFERENCE "RFC 2865 section 5.32"
::= { 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."
REFERENCE "RFC 2866 section 3"
::= { 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."
REFERENCE "RFC 2866 section 2"
::= { radiusAccServerEntry 4 }
-- Request/Response statistics
--
-- Requests = Responses + PendingRequests + ClientTimeouts
--
-- Responses - MalformedResponses - BadAuthenticators -
-- UnknownTypes - PacketsDropped = Successfully received
radiusAccClientRequests OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The number of RADIUS Accounting-Request packets
sent. This does not include retransmissions."
REFERENCE "RFC 2866 section 4.1"
::= { radiusAccServerEntry 5 }
radiusAccClientRetransmissions OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
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."
REFERENCE "RFC 2866 section 2"
::= { radiusAccServerEntry 6 }
radiusAccClientResponses OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The number of RADIUS packets received on the
accounting port from this server."
REFERENCE "RFC 2866 section 4.2"
::= { radiusAccServerEntry 7 }
radiusAccClientMalformedResponses OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
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."
REFERENCE "RFC 2866 section 3"
::= { radiusAccServerEntry 8 }
radiusAccClientBadAuthenticators OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The number of RADIUS Accounting-Response
packets that contained invalid authenticators
received from this server."
REFERENCE "RFC 2866 section 3"
::= { radiusAccServerEntry 9 }
radiusAccClientPendingRequests OBJECT-TYPE
SYNTAX Gauge32
UNITS "packets"
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."
REFERENCE "RFC 2866 section 2"
::= { radiusAccServerEntry 10 }
radiusAccClientTimeouts OBJECT-TYPE
SYNTAX Counter32
UNITS "timeouts"
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."
REFERENCE "RFC 2866 section 2"
::= { radiusAccServerEntry 11 }
radiusAccClientUnknownTypes OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The number of RADIUS packets of unknown type that
were received from this server on the accounting port."
REFERENCE "RFC 2866 section 4"
::= { radiusAccServerEntry 12 }
radiusAccClientPacketsDropped OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS deprecated
DESCRIPTION
"The number of RADIUS packets that were received from
this server on the accounting port and dropped for some
other reason."
::= { radiusAccServerEntry 13 }
-- New MIB 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."
::= { 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,
radiusAccClientCounterDiscontinuity TimeTicks
}
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 version-neutral IP address format."
::= { radiusAccServerExtEntry 3 }
radiusAccClientServerInetPortNumber OBJECT-TYPE
SYNTAX InetPortNumber ( 1..65535 )
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The UDP port the client is using to send requests
to this accounting server. The value zero (0) is
invalid."
REFERENCE "RFC 2866 section 3"
::= { 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."
REFERENCE "RFC 2866 section 2"
::= { radiusAccServerExtEntry 5 }
-- Request/Response statistics
--
-- Requests = Responses + PendingRequests + ClientTimeouts
--
-- Responses - MalformedResponses - BadAuthenticators -
-- UnknownTypes - PacketsDropped = Successfully received
radiusAccClientExtRequests OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Accounting-Request packets
sent. This does not include retransmissions.
This counter may experience a discontinuity when the
RADIUS Accounting Client module within the managed
entity is reinitialized, as indicated by the current
value of radiusAccClientCounterDiscontinuity."
REFERENCE "RFC 2866 section 4.1"
::= { radiusAccServerExtEntry 6 }
radiusAccClientExtRetransmissions OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
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.
This counter may experience a discontinuity when the
RADIUS Accounting Client module within the managed
entity is reinitialized, as indicated by the current
value of radiusAccClientCounterDiscontinuity."
REFERENCE "RFC 2866 section 2"
::= { radiusAccServerExtEntry 7 }
radiusAccClientExtResponses OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS packets received on the
accounting port from this server. This counter
may experience a discontinuity when the RADIUS
Accounting Client module within the managed entity is
reinitialized, as indicated by the current value of
radiusAccClientCounterDiscontinuity."
REFERENCE "RFC 2866 section 4.2"
::= { radiusAccServerExtEntry 8 }
radiusAccClientExtMalformedResponses OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
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. This counter may
experience a discontinuity when the RADIUS Accounting
Client module within the managed entity is
reinitialized, as indicated by the current
value of radiusAccClientCounterDiscontinuity."
REFERENCE "RFC 2866 section 3"
::= { radiusAccServerExtEntry 9 }
radiusAccClientExtBadAuthenticators OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Accounting-Response
packets that contained invalid authenticators
received from this server. This counter may
experience a discontinuity when the RADIUS
Accounting Client module within the managed
entity is reinitialized, as indicated by the
current value of
radiusAccClientCounterDiscontinuity."
REFERENCE "RFC 2866 section 3"
::= { radiusAccServerExtEntry 10 }
radiusAccClientExtPendingRequests OBJECT-TYPE
SYNTAX Gauge32
UNITS "packets"
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. This counter may experience a
discontinuity when the RADIUS Accounting Client module
within the managed entity is reinitialized, as
indicated by the current value of
radiusAccClientCounterDiscontinuity."
REFERENCE "RFC 2866 section 2"
::= { radiusAccServerExtEntry 11 }
radiusAccClientExtTimeouts OBJECT-TYPE
SYNTAX Counter32
UNITS "timeouts"
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. This counter may experience a discontinuity
when the RADIUS Accounting Client module within the
managed entity is reinitialized, as indicated by the
current value of radiusAccClientCounterDiscontinuity."
REFERENCE "RFC 2866 section 2"
::= { radiusAccServerExtEntry 12 }
radiusAccClientExtUnknownTypes OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS packets of unknown type that
were received from this server on the accounting port.
This counter may experience a discontinuity when the
RADIUS Accounting Client module within the managed
entity is reinitialized, as indicated by the current
value of radiusAccClientCounterDiscontinuity."
REFERENCE "RFC 2866 section 4"
::= { radiusAccServerExtEntry 13 }
radiusAccClientExtPacketsDropped OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS packets that were received from
this server on the accounting port and dropped for some
other reason. This counter may experience a
discontinuity when the RADIUS Accounting Client module
within the managed entity is reinitialized, as indicated
by the current value of
radiusAccClientCounterDiscontinuity."
::= { radiusAccServerExtEntry 14 }
radiusAccClientCounterDiscontinuity OBJECT-TYPE
SYNTAX TimeTicks
UNITS "centiseconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of centiseconds since the last
discontinuity in the RADIUS Accounting Client
counters. A discontinuity may be the result of a
reinitialization of the RADIUS Accounting Client
module within the managed entity."
::= { radiusAccServerExtEntry 15 }
-- conformance information
radiusAccClientMIBConformance OBJECT IDENTIFIER
::= { radiusAccClientMIB 2 }
radiusAccClientMIBCompliances OBJECT IDENTIFIER
::= { radiusAccClientMIBConformance 1 }
radiusAccClientMIBGroups OBJECT IDENTIFIER
::= { radiusAccClientMIBConformance 2 }
-- units of conformance
radiusAccClientMIBCompliance MODULE-COMPLIANCE
STATUS deprecated
DESCRIPTION
"The compliance statement for accounting clients
implementing the RADIUS Accounting Client MIB.
Implementation of this module is for IPv4-only
entities, or for backwards compatibility use with
entities that support both IPv4 and IPv6."
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 IPv6 Extensions MIB. Implementation of
this module is for entities that support IPv6,
or support IPv4 and IPv6."
MODULE -- this module
MANDATORY-GROUPS { radiusAccClientExtMIBGroup }
OBJECT radiusAccServerInetAddressType
SYNTAX InetAddressType { ipv4(1), ipv6(2) }
DESCRIPTION
"An implementation is only required to support
IPv4 and globally unique IPv6 addresses."
OBJECT radiusAccServerInetAddress
SYNTAX InetAddress ( SIZE (4|16) )
DESCRIPTION
"An implementation is only required to support
IPv4 and globally unique IPv6 addresses."
::= { 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,
radiusAccClientServerInetPortNumber,
radiusAccClientExtRoundTripTime,
radiusAccClientExtRequests,
radiusAccClientExtRetransmissions,
radiusAccClientExtResponses,
radiusAccClientExtMalformedResponses,
radiusAccClientExtBadAuthenticators,
radiusAccClientExtPendingRequests,
radiusAccClientExtTimeouts,
radiusAccClientExtUnknownTypes,
radiusAccClientExtPacketsDropped,
radiusAccClientCounterDiscontinuity
}
STATUS current
DESCRIPTION
"The basic collection of objects providing management of
RADIUS Accounting Clients."
::= { radiusAccClientMIBGroups 2 }
END
8. 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 implementers consider the security features as
provided by the SNMPv3 framework (see [RFC3410], section 8),
including full support for the SNMPv3 cryptographic mechanisms (for
authentication and privacy).
Further, deployment of SNMP versions prior to SNMPv3 is NOT
RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to
enable cryptographic security. It is then a customer/operator
responsibility to ensure that the SNMP entity giving access to an
instance of this MIB module is properly configured to give access to
the objects only to those principals (users) that have legitimate
rights to indeed GET or SET (change/create/delete) them.
9. References
9.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[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.
[RFC2866] Rigney, C., "RADIUS Accounting", RFC 2866, June 2000.
[RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An
Architecture for Describing Simple Network Management
Protocol (SNMP) Management Frameworks", STD 62, RFC 3411,
December 2002.
[RFC4001] Daniele, M., Haberman, B., Routhier, S., and J.
Schoenwaelder, "Textual Conventions for Internet Network
Addresses", RFC 4001, February 2005.
9.2. Informative References
[RFC2620] Aboba, B. and G. Zorn, "RADIUS Accounting Client MIB",
RFC 2620, June 1999.
[RFC2865] Rigney, C., Willens, S., Rubens, A., and W. Simpson,
"Remote Authentication Dial In User Service (RADIUS)", RFC
2865, June 2000.
[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart,
"Introduction and Applicability Statements for Internet-
Standard Management Framework", RFC 3410, December 2002.
[RFC4671] Nelson, D., "RADIUS Accounting Server MIB for IPv6", RFC
4671, August 2006.
Appendix A. Acknowledgements
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, Greg Weber, and Bert Wijnen.
Author's Address
David B. Nelson
Enterasys Networks
50 Minuteman Road
Andover, MA 01810
USA
EMail: dnelson@enterasys.com
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