Enterasys Networks
August 2006
RADIUS Accounting Server MIB for IPv6
Status of This Memo
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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
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Copyright © The Internet Society (2006).
Abstract
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This memo defines a set of extensions that instrument RADIUS accounting server 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 servers.
This memo obsoletes RFC 2621 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 2621 are carried forward into this document. This memo also adds UNITS and REFERENCE clauses to selected objects.
Table of Contents
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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 ........................................20 9. References .....................................................22 9.1. Normative References ......................................22 9.2. Informative References ....................................22 Appendix A. Acknowledgements ......................................23
1. Introduction
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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 Server as defined in RFC 2866 [RFC2866].
2. Terminology
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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
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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
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This document obsoletes RFC 2621 [RFC2621], RADIUS Accounting Server MIB, by deprecating the radiusAccClientTable table and adding a new table, radiusAccClientExtTable, containing radiusAccClientInetAddressType and radiusAccClientInetAddress. The purpose of these added MIB objects is to support version-neutral IP addressing formats. The existing table containing radiusAccClientAddress is deprecated. The remaining MIB objects from RFC 2621 are carried forward into this document. This memo also adds UNITS and REFERENCE clauses to selected objects.
RFC 4001 [RFC4001], which defines the SMI Textual Conventions for version-neutral IP 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
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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 server MIB is defined in this document, and the client MIB is defined in [RFC4670].
This MIB module contains thirteen scalars as well as a single table, the RADIUS Accounting Client Table, which contains one row for each RADIUS accounting client with which the server shares a secret. Each entry in the RADIUS Accounting Client Table includes twelve columns presenting a view of the activity of the RADIUS accounting server.
This MIB imports from [RFC2578], [RFC2580], [RFC3411], and [RFC4001].
6. Deprecated Objects
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The deprecated table in this MIB is carried forward from RFC 2621 [RFC2621]. There are two conditions under which it MAY be desirable for managed entities to continue to support the deprecated table:
- The managed entity only supports IPv4 address formats.
- 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 client 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 client, 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
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RADIUS-ACC-SERVER-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, OBJECT-IDENTITY, Counter32, Integer32, IpAddress, TimeTicks, mib-2 FROM SNMPv2-SMI SnmpAdminString FROM SNMP-FRAMEWORK-MIB InetAddressType, InetAddress FROM INET-ADDRESS-MIB MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF;radiusAccServMIB 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 server side of the Remote Authentication Dial-In User Service (RADIUS) accounting protocol. Copyright © The Internet Society (2006). This version of this MIB module is part of RFC 4671; see the RFC itself for full legal notices." REVISION "200608210000Z" -- 21 August 2006 DESCRIPTION "Revised version as published in RFC 4671. This version obsoletes that of RFC 2621 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 2621 are carried forward into this version." REVISION "199906110000Z" -- 11 Jun 1999 DESCRIPTION "Initial version as published in RFC 2621." ::= { radiusAccounting 1 } radiusMIB OBJECT-IDENTITY STATUS current DESCRIPTION "The OID assigned to RADIUS MIB work by the IANA." ::= { mib-2 67 } radiusAccounting OBJECT IDENTIFIER ::= {radiusMIB 2} radiusAccServMIBObjects OBJECT IDENTIFIER ::= { radiusAccServMIB 1 } radiusAccServ OBJECT IDENTIFIER ::= { radiusAccServMIBObjects 1 }radiusAccServIdent OBJECT-TYPE
SYNTAX SnmpAdminString MAX-ACCESS read-only STATUS current DESCRIPTION "The implementation identification string for the RADIUS accounting server software in use on the system, for example, 'FNS-2.1'." ::= {radiusAccServ 1}radiusAccServUpTime OBJECT-TYPE
SYNTAX TimeTicks MAX-ACCESS read-only STATUS current DESCRIPTION "If the server has a persistent state (e.g., a process), this value will be the time elapsed (in hundredths of a second) since the server process was started. For software without persistent state, this value will be zero." ::= {radiusAccServ 2}radiusAccServResetTime OBJECT-TYPE
SYNTAX TimeTicks MAX-ACCESS read-only STATUS current DESCRIPTION "If the server has a persistent state (e.g., a process) and supports a 'reset' operation (e.g., can be told to re-read configuration files), this value will be the time elapsed (in hundredths of a second) since the server was 'reset.' For software that does not have persistence or does not support a 'reset' operation, this value will be zero." ::= {radiusAccServ 3}radiusAccServConfigReset OBJECT-TYPE
SYNTAX INTEGER { other(1), reset(2), initializing(3), running(4)} MAX-ACCESS read-write STATUS current DESCRIPTION "Status/action object to reinitialize any persistent server state. When set to reset(2), any persistent server state (such as a process) is reinitialized as if the server had just been started. This value will never be returned by a read operation. When read, one of the following values will be returned: other(1) - server in some unknown state; initializing(3) - server (re)initializing; running(4) - server currently running." ::= {radiusAccServ 4}radiusAccServTotalRequests OBJECT-TYPE
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SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
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"The number of packets received on the accounting port." REFERENCE "RFC 2866 section 4.1" ::= { radiusAccServ 5 }radiusAccServTotalInvalidRequests OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Request packets received from unknown addresses." REFERENCE "RFC 2866 sections 2, 4.1" ::= { radiusAccServ 6 }radiusAccServTotalDupRequests OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of duplicate RADIUS Accounting-Request packets received." REFERENCE "RFC 2866 section 4.1" ::= { radiusAccServ 7 }radiusAccServTotalResponses OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Response packets sent." REFERENCE "RFC 2866 section 4.2" ::= { radiusAccServ 8 }radiusAccServTotalMalformedRequests OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of malformed RADIUS Accounting-Request packets received. Bad authenticators or unknown types are not included as malformed Access-Requests." REFERENCE "RFC 2866 section 3" ::= { radiusAccServ 9 }radiusAccServTotalBadAuthenticators OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Request packets that contained an invalid authenticator." REFERENCE "RFC 2866 section 3" ::= { radiusAccServ 10 }radiusAccServTotalPacketsDropped OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of incoming packets silently discarded for a reason other than malformed, bad authenticators, or unknown types." REFERENCE "RFC 2866 section 3" ::= { radiusAccServ 11 }radiusAccServTotalNoRecords OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Request packets that were received and responded to but not recorded." ::= { radiusAccServ 12 }radiusAccServTotalUnknownTypes OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS packets of unknown type that were received." REFERENCE "RFC 2866 section 4" ::= { radiusAccServ 13 } radiusAccClientTable OBJECT-TYPE SYNTAX SEQUENCE OF RadiusAccClientEntry MAX-ACCESS not-accessible STATUS deprecated DESCRIPTION "The (conceptual) table listing the RADIUS accounting clients with which the server shares a secret." ::= { radiusAccServ 14 }radiusAccClientEntry OBJECT-TYPE
SYNTAX RadiusAccClientEntry MAX-ACCESS not-accessible STATUS deprecated DESCRIPTION "An entry (conceptual row) representing a RADIUS accounting client with which the server shares a secret." INDEX { radiusAccClientIndex } ::= { radiusAccClientTable 1 } RadiusAccClientEntry ::= SEQUENCE { radiusAccClientIndex Integer32, radiusAccClientAddress IpAddress, radiusAccClientID SnmpAdminString, radiusAccServPacketsDropped Counter32, radiusAccServRequests Counter32, radiusAccServDupRequests Counter32, radiusAccServResponses Counter32, radiusAccServBadAuthenticators Counter32, radiusAccServMalformedRequests Counter32, radiusAccServNoRecords Counter32, radiusAccServUnknownTypes Counter32 }radiusAccClientIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647) MAX-ACCESS not-accessible STATUS deprecated DESCRIPTION "A number uniquely identifying each RADIUS accounting client with which this server communicates." ::= { radiusAccClientEntry 1 }radiusAccClientAddress OBJECT-TYPE
SYNTAX IpAddress MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The NAS-IP-Address of the RADIUS accounting client referred to in this table entry." ::= { radiusAccClientEntry 2 }radiusAccClientID OBJECT-TYPE
SYNTAX SnmpAdminString MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The NAS-Identifier of the RADIUS accounting client referred to in this table entry. This is not necessarily the same as sysName in MIB II." REFERENCE "RFC 2865 section 5.32" ::= { radiusAccClientEntry 3 } -- Server Counters -- -- Requests - DupRequests - BadAuthenticators - MalformedRequests - -- UnknownTypes - PacketsDropped - Responses = Pending -- -- Requests - DupRequests - BadAuthenticators - MalformedRequests - -- UnknownTypes - PacketsDropped - NoRecords = entries loggedradiusAccServPacketsDropped OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of incoming packets received from this client and silently discarded for a reason other than malformed, bad authenticators, or unknown types." REFERENCE "RFC 2866 section 3" ::= { radiusAccClientEntry 4 }radiusAccServRequests OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of packets received from this client on the accounting port." REFERENCE "RFC 2866 section 4.1" ::= { radiusAccClientEntry 5 }radiusAccServDupRequests OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of duplicate RADIUS Accounting-Request packets received from this client." REFERENCE "RFC 2866 section 4.1" ::= { radiusAccClientEntry 6 }radiusAccServResponses OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Accounting-Response packets sent to this client." REFERENCE "RFC 2866 section 4.2" ::= { radiusAccClientEntry 7 }radiusAccServBadAuthenticators OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Accounting-Request packets that contained invalid authenticators received from this client." REFERENCE "RFC 2866 section 3" ::= { radiusAccClientEntry 8 }radiusAccServMalformedRequests OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of malformed RADIUS Accounting-Request packets that were received from this client. Bad authenticators and unknown types are not included as malformed Accounting-Requests." REFERENCE "RFC 2866 section 3" ::= { radiusAccClientEntry 9 }radiusAccServNoRecords OBJECT-TYPE
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SYNTAX Counter32
UNITS "packets"
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MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Accounting-Request packets that were received and responded to but not recorded." ::= { radiusAccClientEntry 10 }radiusAccServUnknownTypes 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 client." REFERENCE "RFC 2866 section 4" ::= { radiusAccClientEntry 11 }-- New MIB objects added in this revision
radiusAccClientExtTable OBJECT-TYPE
SYNTAX SEQUENCE OF RadiusAccClientExtEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The (conceptual) table listing the RADIUS accounting clients with which the server shares a secret." ::= { radiusAccServ 15 }radiusAccClientExtEntry OBJECT-TYPE
SYNTAX RadiusAccClientExtEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry (conceptual row) representing a RADIUS accounting client with which the server shares a secret." INDEX { radiusAccClientExtIndex } ::= { radiusAccClientExtTable 1 }RadiusAccClientExtEntry ::= SEQUENCE {
radiusAccClientExtIndex Integer32, radiusAccClientInetAddressType InetAddressType, radiusAccClientInetAddress InetAddress, radiusAccClientExtID SnmpAdminString, radiusAccServExtPacketsDropped Counter32, radiusAccServExtRequests Counter32, radiusAccServExtDupRequests Counter32, radiusAccServExtResponses Counter32, radiusAccServExtBadAuthenticators Counter32, radiusAccServExtMalformedRequests Counter32, radiusAccServExtNoRecords Counter32, radiusAccServExtUnknownTypes Counter32, radiusAccServerCounterDiscontinuity TimeTicks }radiusAccClientExtIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647) MAX-ACCESS not-accessible STATUS current DESCRIPTION "A number uniquely identifying each RADIUS accounting client with which this server communicates." ::= { radiusAccClientExtEntry 1 }-
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radiusAccClientInetAddressType OBJECT-TYPE
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SYNTAX InetAddressType MAX-ACCESS read-only STATUS current DESCRIPTION "The type of address format used for the radiusAccClientInetAddress object." ::= { radiusAccClientExtEntry 2 }-
radiusAccClientInetAddress OBJECT-TYPE
SYNTAX InetAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The IP address of the RADIUS accounting client referred to in this table entry, using the IPv6 address format." ::= { radiusAccClientExtEntry 3 }radiusAccClientExtID OBJECT-TYPE
SYNTAX SnmpAdminString MAX-ACCESS read-only STATUS current DESCRIPTION "The NAS-Identifier of the RADIUS accounting client referred to in this table entry. This is not necessarily the same as sysName in MIB II." REFERENCE "RFC 2865 section 5.32" ::= { radiusAccClientExtEntry 4 } -- Server Counters -- -- Requests - DupRequests - BadAuthenticators - MalformedRequests - -- UnknownTypes - PacketsDropped - Responses = Pending -- -- Requests - DupRequests - BadAuthenticators - MalformedRequests - -- UnknownTypes - PacketsDropped - NoRecords = entries loggedradiusAccServExtPacketsDropped OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of incoming packets received from this client and silently discarded for a reason other than malformed, bad authenticators, or unknown types. This counter may experience a discontinuity when the RADIUS Accounting Server module within the managed entity is reinitialized, as indicated by the current value of radiusAccServerCounterDiscontinuity." REFERENCE "RFC 2866 section 3" ::= { radiusAccClientExtEntry 5 }radiusAccServExtRequests OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of packets received from this client on the accounting port. This counter may experience a discontinuity when the RADIUS Accounting Server module within the managed entity is reinitialized, as indicated by the current value of radiusAccServerCounterDiscontinuity." REFERENCE "RFC 2866 section 4.1" ::= { radiusAccClientExtEntry 6 }radiusAccServExtDupRequests OBJECT-TYPE
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SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION-
"The number of duplicate RADIUS Accounting-Request
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packets received from this client. This counter
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may experience a discontinuity when the RADIUS Accounting Server module within the managed entity is reinitialized, as indicated by the current value of radiusAccServerCounterDiscontinuity." REFERENCE "RFC 2866 section 4.1" ::= { radiusAccClientExtEntry 7 }radiusAccServExtResponses OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Response packets sent to this client. This counter may experience a discontinuity when the RADIUS Accounting Server module within the managed entity is reinitialized, as indicated by the current value of radiusAccServerCounterDiscontinuity." REFERENCE "RFC 2866 section 4.2" ::= { radiusAccClientExtEntry 8 }radiusAccServExtBadAuthenticators OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Request packets that contained invalid authenticators received from this client. This counter may experience a discontinuity when the RADIUS Accounting Server module within the managed entity is reinitialized, as indicated by the current value of radiusAccServerCounterDiscontinuity." REFERENCE "RFC 2866 section 3" ::= { radiusAccClientExtEntry 9 }radiusAccServExtMalformedRequests OBJECT-TYPE
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SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION-
"The number of malformed RADIUS Accounting-Request
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packets that were received from this client. Bad authenticators and unknown types are not
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included as malformed Accounting-Requests. This counter may experience a discontinuity when the RADIUS Accounting Server module within the managed entity is reinitialized, as indicated by the current value of radiusAccServerCounterDiscontinuity." REFERENCE "RFC 2866 section 3" ::= { radiusAccClientExtEntry 10 }radiusAccServExtNoRecords OBJECT-TYPE
SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Request packets that were received and responded to but not recorded. This counter may experience a discontinuity when the RADIUS Accounting Server module within the managed entity is reinitialized, as indicated by the current value of radiusAccServerCounterDiscontinuity." ::= { radiusAccClientExtEntry 11 }radiusAccServExtUnknownTypes 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 client. This counter may experience a discontinuity when the RADIUS Accounting Server module within the managed entity is reinitialized, as indicated by the current value of radiusAccServerCounterDiscontinuity." REFERENCE "RFC 2866 section 4" ::= { radiusAccClientExtEntry 12 }radiusAccServerCounterDiscontinuity OBJECT-TYPE
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SYNTAX TimeTicks
UNITS "centiseconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION-
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"The number of centiseconds since the last
discontinuity in the RADIUS Accounting Server counters. A discontinuity may be the result of a reinitialization of the RADIUS Accounting Server
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module within the managed entity." ::= { radiusAccClientExtEntry 13 } -- conformance information radiusAccServMIBConformance OBJECT IDENTIFIER ::= { radiusAccServMIB 2 } radiusAccServMIBCompliances OBJECT IDENTIFIER ::= { radiusAccServMIBConformance 1 } radiusAccServMIBGroups OBJECT IDENTIFIER ::= { radiusAccServMIBConformance 2 } -- compliance statementsradiusAccServMIBCompliance MODULE-COMPLIANCE
STATUS deprecated DESCRIPTION "The compliance statement for accounting servers implementing the RADIUS Accounting Server 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 { radiusAccServMIBGroup } OBJECT radiusAccServConfigReset WRITE-SYNTAX INTEGER { reset(2) } DESCRIPTION "The only SETable value is 'reset' (2)." ::= { radiusAccServMIBCompliances 1 }radiusAccServExtMIBCompliance MODULE-COMPLIANCE
STATUS current DESCRIPTION "The compliance statement for accounting servers implementing the RADIUS Accounting Server IPv6 Extensions MIB. Implementation of this module is for entities that support IPv6, or support IPv4 and IPv6." MODULE -- this module MANDATORY-GROUPS { radiusAccServExtMIBGroup } OBJECT radiusAccServConfigReset WRITE-SYNTAX INTEGER { reset(2) }
DESCRIPTION "The only SETable value is 'reset' (2)."
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-
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OBJECT radiusAccClientInetAddressType
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SYNTAX InetAddressType { ipv4(1), ipv6(2) } DESCRIPTION "An implementation is only required to support IPv4 and globally unique IPv6 addresses."-
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OBJECT radiusAccClientInetAddress
SYNTAX InetAddress ( SIZE (4|16) )
DESCRIPTION-
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"An implementation is only required to support
IPv4 and globally unique IPv6 addresses."
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-
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::= { radiusAccServMIBCompliances 2 }-- units of conformance
radiusAccServMIBGroup OBJECT-GROUP
OBJECTS {radiusAccServIdent, radiusAccServUpTime, radiusAccServResetTime, radiusAccServConfigReset, radiusAccServTotalRequests, radiusAccServTotalInvalidRequests, radiusAccServTotalDupRequests, radiusAccServTotalResponses, radiusAccServTotalMalformedRequests, radiusAccServTotalBadAuthenticators, radiusAccServTotalPacketsDropped, radiusAccServTotalNoRecords, radiusAccServTotalUnknownTypes, radiusAccClientAddress, radiusAccClientID, radiusAccServPacketsDropped, radiusAccServRequests, radiusAccServDupRequests, radiusAccServResponses, radiusAccServBadAuthenticators, radiusAccServMalformedRequests, radiusAccServNoRecords, radiusAccServUnknownTypes } STATUS deprecated DESCRIPTION "The collection of objects providing management of a RADIUS Accounting Server." ::= { radiusAccServMIBGroups 1 }radiusAccServExtMIBGroup OBJECT-GROUP
OBJECTS {radiusAccServIdent, radiusAccServUpTime, radiusAccServResetTime, radiusAccServConfigReset, radiusAccServTotalRequests, radiusAccServTotalInvalidRequests, radiusAccServTotalDupRequests, radiusAccServTotalResponses, radiusAccServTotalMalformedRequests, radiusAccServTotalBadAuthenticators, radiusAccServTotalPacketsDropped, radiusAccServTotalNoRecords, radiusAccServTotalUnknownTypes, radiusAccClientInetAddressType, radiusAccClientInetAddress, radiusAccClientExtID, radiusAccServExtPacketsDropped, radiusAccServExtRequests, radiusAccServExtDupRequests, radiusAccServExtResponses, radiusAccServExtBadAuthenticators, radiusAccServExtMalformedRequests, radiusAccServExtNoRecords, radiusAccServExtUnknownTypes, radiusAccServerCounterDiscontinuity } STATUS current DESCRIPTION "The collection of objects providing management of a RADIUS Accounting Server." ::= { radiusAccServMIBGroups 2 } END -
8. Security Considerations
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There are management objects (radiusAccServConfigReset) defined in this MIB that have a MAX-ACCESS clause of read-write and/or read- create. Such objects may be considered sensitive or vulnerable in some network environments. The support for SET operations in a non- secure environment without proper protection can have a negative effect on network operations. These are:
radiusAccServConfigReset
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This object can be used to reinitialize the persistent state of any server. When set to reset(2), any persistent server state (such as a process) is reinitialized as if the server had just been started. Depending on the server implementation details, this action may or may not interrupt the processing of pending request in the server. Abuse of this object may lead to a Denial of Service attack on the server.
There are a number of managed objects in this MIB that may contain sensitive information. These are:
radiusAccClientIPAddress
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This can be used to determine the address of the RADIUS accounting client with which the server is communicating. This information could be useful in mounting an attack on the accounting client.
radiusAccClientInetAddress
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This can be used to determine the address of the RADIUS accounting client with which the server is communicating. This information could be useful in mounting an attack on the accounting client.
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
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[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
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[RFC2621] Zorn, G. and B. Aboba, "RADIUS Accounting Server MIB", RFC 2621, 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. [RFC4670] Nelson, D., "RADIUS Accounting Client MIB for IPv6", RFC 4670, August 2006.
Appendix A. Acknowledgements
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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
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David B. Nelson Enterasys Networks 50 Minuteman Road Andover, MA 01810 USA
EMail:
dnelson@enterasys.com
Full Copyright Statement
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Acknowledgement
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