Network Working Group D. Nelson Request for Comments: 4669 Enterasys Networks Obsoletes: 2619 August 2006 Category: Standards Track RADIUS Authentication Server MIB for IPv6 Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. 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 authentication 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 authentication servers. This memo obsoletes RFC 2619 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 2619 are carried forward into this document. This memo also adds UNITS and REFERENCE clauses to selected objects. Nelson Standards Track [Page 1]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 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 ........................................21 9. References .....................................................23 9.1. Normative References ......................................23 9.2. Informative References ....................................23 Appendix A. Acknowledgements ......................................24 Nelson Standards Track [Page 2]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 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) Authentication Server as defined in RFC 2865 [RFC2865]. 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]. This document uses the word "malformed" with respect to RADIUS packets, particularly in the context of counters of "malformed packets". While RFC 2865 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 2865. Some implementations may determine that packets are malformed when the Vendor Specific Attribute (VSA) format does not follow the RFC 2865 recommendations for VSAs. 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 2619 [RFC2619], RADIUS Authentication Server MIB, by deprecating the radiusAuthClientTable table and adding a new table, radiusAuthClientExtTable, containing radiusAuthClientInetAddressType and radiusAuthClientInetAddress. The Nelson Standards Track [Page 3]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 purpose of these added MIB objects is to support version-neutral IP addressing formats. The existing table containing radiusAuthClientAddress is deprecated. The remaining MIB objects from RFC 2619 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 The RADIUS authentication protocol, described in RFC 2865 [RFC2865], distinguishes between the client function and the server function. In RADIUS authentication, clients send Access-Requests, and servers reply with Access-Accepts, Access-Rejects, and Access-Challenges. Typically, NAS devices implement the client function, and thus would be expected to implement the RADIUS authentication client MIB, while RADIUS authentication servers implement the server function, and thus would be expected to implement the RADIUS authentication server MIB. However, it is possible for a RADIUS authentication entity to perform both client and server functions. For example, a RADIUS proxy may act as a server to one or more RADIUS authentication clients, while simultaneously acting as an authentication client to one or more authentication 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 [RFC4668]. This MIB module contains fourteen scalars as well as a single table, the RADIUS Authentication Client Table, which contains one row for each RADIUS authentication client with which the server shares a secret. Each entry in the RADIUS Authentication Client Table includes thirteen columns presenting a view of the activity of the RADIUS authentication server. This MIB imports from [RFC2578], [RFC2580], [RFC3411], and [RFC4001]. Nelson Standards Track [Page 4]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 6. Deprecated Objects The deprecated table in this MIB is carried forward from RFC 2619 [RFC2619]. 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 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 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 RADIUS-AUTH-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; radiusAuthServMIB 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 Nelson Standards Track [Page 5]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 EMail: bernarda@microsoft.com" DESCRIPTION "The MIB module for entities implementing the server side of the Remote Authentication Dial-In User Service (RADIUS) authentication protocol. Copyright (C) The Internet Society (2006). This version of this MIB module is part of RFC 4669; see the RFC itself for full legal notices." REVISION "200608210000Z" -- 21 August 2006 DESCRIPTION "Revised version as published in RFC 4669. This version obsoletes that of RFC 2619 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 2619 are carried forward into this version." REVISION "199906110000Z" -- 11 Jun 1999 DESCRIPTION "Initial version as published in RFC 2619." ::= { radiusAuthentication 1 } radiusMIB OBJECT-IDENTITY STATUS current DESCRIPTION "The OID assigned to RADIUS MIB work by the IANA." ::= { mib-2 67 } radiusAuthentication OBJECT IDENTIFIER ::= {radiusMIB 1} radiusAuthServMIBObjects OBJECT IDENTIFIER ::= { radiusAuthServMIB 1 } radiusAuthServ OBJECT IDENTIFIER ::= { radiusAuthServMIBObjects 1 } radiusAuthServIdent OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-only STATUS current DESCRIPTION "The implementation identification string for the RADIUS authentication server software in use on the system, for example, 'FNS-2.1'." ::= {radiusAuthServ 1} radiusAuthServUpTime OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-only STATUS current Nelson Standards Track [Page 6]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 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." ::= {radiusAuthServ 2} radiusAuthServResetTime 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." ::= {radiusAuthServ 3} radiusAuthServConfigReset 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." ::= {radiusAuthServ 4} radiusAuthServTotalAccessRequests OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of packets received on the Nelson Standards Track [Page 7]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 authentication port." REFERENCE "RFC 2865 section 4.1" ::= { radiusAuthServ 5} radiusAuthServTotalInvalidRequests OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Access-Request packets received from unknown addresses." REFERENCE "RFC 2865 section 4.1" ::= { radiusAuthServ 6 } radiusAuthServTotalDupAccessRequests OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of duplicate RADIUS Access-Request packets received." REFERENCE "RFC 2865 section 4.1" ::= { radiusAuthServ 7 } radiusAuthServTotalAccessAccepts OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Access-Accept packets sent." REFERENCE "RFC 2865 section 4.2" ::= { radiusAuthServ 8 } radiusAuthServTotalAccessRejects OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Access-Reject packets sent." REFERENCE "RFC 2865 section 4.3" ::= { radiusAuthServ 9 } radiusAuthServTotalAccessChallenges OBJECT-TYPE SYNTAX Counter32 Nelson Standards Track [Page 8]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Access-Challenge packets sent." REFERENCE "RFC 2865 section 4.4" ::= { radiusAuthServ 10 } radiusAuthServTotalMalformedAccessRequests OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of malformed RADIUS Access-Request packets received. Bad authenticators and unknown types are not included as malformed Access-Requests." REFERENCE "RFC 2865 section 4.1" ::= { radiusAuthServ 11 } radiusAuthServTotalBadAuthenticators OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Authentication-Request packets that contained invalid Message Authenticator attributes received." REFERENCE "RFC 2865 section 3" ::= { radiusAuthServ 12 } radiusAuthServTotalPacketsDropped OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of incoming packets silently discarded for some reason other than malformed, bad authenticators or unknown types." REFERENCE "RFC 2865 section 3" ::= { radiusAuthServ 13 } radiusAuthServTotalUnknownTypes OBJECT-TYPE SYNTAX Counter32 Nelson Standards Track [Page 9]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS packets of unknown type that were received." REFERENCE "RFC 2865 section 4" ::= { radiusAuthServ 14 } radiusAuthClientTable OBJECT-TYPE SYNTAX SEQUENCE OF RadiusAuthClientEntry MAX-ACCESS not-accessible STATUS deprecated DESCRIPTION "The (conceptual) table listing the RADIUS authentication clients with which the server shares a secret." ::= { radiusAuthServ 15 } radiusAuthClientEntry OBJECT-TYPE SYNTAX RadiusAuthClientEntry MAX-ACCESS not-accessible STATUS deprecated DESCRIPTION "An entry (conceptual row) representing a RADIUS authentication client with which the server shares a secret." INDEX { radiusAuthClientIndex } ::= { radiusAuthClientTable 1 } RadiusAuthClientEntry ::= SEQUENCE { radiusAuthClientIndex Integer32, radiusAuthClientAddress IpAddress, radiusAuthClientID SnmpAdminString, radiusAuthServAccessRequests Counter32, radiusAuthServDupAccessRequests Counter32, radiusAuthServAccessAccepts Counter32, radiusAuthServAccessRejects Counter32, radiusAuthServAccessChallenges Counter32, radiusAuthServMalformedAccessRequests Counter32, radiusAuthServBadAuthenticators Counter32, radiusAuthServPacketsDropped Counter32, radiusAuthServUnknownTypes Counter32 } radiusAuthClientIndex OBJECT-TYPE Nelson Standards Track [Page 10]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 SYNTAX Integer32 (1..2147483647) MAX-ACCESS not-accessible STATUS deprecated DESCRIPTION "A number uniquely identifying each RADIUS authentication client with which this server communicates." ::= { radiusAuthClientEntry 1 } radiusAuthClientAddress OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The NAS-IP-Address of the RADIUS authentication client referred to in this table entry." REFERENCE "RFC 2865 section 2" ::= { radiusAuthClientEntry 2 } radiusAuthClientID OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The NAS-Identifier of the RADIUS authentication client referred to in this table entry. This is not necessarily the same as sysName in MIB II." REFERENCE "RFC 2865 section 5.32" ::= { radiusAuthClientEntry 3 } -- Server Counters -- -- Responses = AccessAccepts + AccessRejects + AccessChallenges -- -- Requests - DupRequests - BadAuthenticators - MalformedRequests - -- UnknownTypes - PacketsDropped - Responses = Pending -- -- Requests - DupRequests - BadAuthenticators - MalformedRequests - -- UnknownTypes - PacketsDropped = entries logged radiusAuthServAccessRequests OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of packets received on the authentication Nelson Standards Track [Page 11]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 port from this client." REFERENCE "RFC 2865 section 4.1" ::= { radiusAuthClientEntry 4 } radiusAuthServDupAccessRequests OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of duplicate RADIUS Access-Request packets received from this client." REFERENCE "RFC 2865 section 4.1" ::= { radiusAuthClientEntry 5 } radiusAuthServAccessAccepts OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Access-Accept packets sent to this client." REFERENCE "RFC 2865 section 4.2" ::= { radiusAuthClientEntry 6 } radiusAuthServAccessRejects OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Access-Reject packets sent to this client." REFERENCE "RFC 2865 section 4.3" ::= { radiusAuthClientEntry 7 } radiusAuthServAccessChallenges OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Access-Challenge packets sent to this client." REFERENCE "RFC 2865 section 4.4" ::= { radiusAuthClientEntry 8 } Nelson Standards Track [Page 12]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 radiusAuthServMalformedAccessRequests OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of malformed RADIUS Access-Request packets received from this client. Bad authenticators and unknown types are not included as malformed Access-Requests." REFERENCE "RFC 2865 section 3" ::= { radiusAuthClientEntry 9 } radiusAuthServBadAuthenticators OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Authentication-Request packets that contained invalid Message Authenticator attributes received from this client." REFERENCE "RFC 2865 section 3" ::= { radiusAuthClientEntry 10 } radiusAuthServPacketsDropped OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of incoming packets from this client silently discarded for some reason other than malformed, bad authenticators or unknown types." REFERENCE "RFC 2865 section 3" ::= { radiusAuthClientEntry 11 } radiusAuthServUnknownTypes 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 2865 section 4" ::= { radiusAuthClientEntry 12 } Nelson Standards Track [Page 13]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 -- New MIB objects added in this revision radiusAuthClientExtTable OBJECT-TYPE SYNTAX SEQUENCE OF RadiusAuthClientExtEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The (conceptual) table listing the RADIUS authentication clients with which the server shares a secret." ::= { radiusAuthServ 16 } radiusAuthClientExtEntry OBJECT-TYPE SYNTAX RadiusAuthClientExtEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry (conceptual row) representing a RADIUS authentication client with which the server shares a secret." INDEX { radiusAuthClientExtIndex } ::= { radiusAuthClientExtTable 1 } RadiusAuthClientExtEntry ::= SEQUENCE { radiusAuthClientExtIndex Integer32, radiusAuthClientInetAddressType InetAddressType, radiusAuthClientInetAddress InetAddress, radiusAuthClientExtID SnmpAdminString, radiusAuthServExtAccessRequests Counter32, radiusAuthServExtDupAccessRequests Counter32, radiusAuthServExtAccessAccepts Counter32, radiusAuthServExtAccessRejects Counter32, radiusAuthServExtAccessChallenges Counter32, radiusAuthServExtMalformedAccessRequests Counter32, radiusAuthServExtBadAuthenticators Counter32, radiusAuthServExtPacketsDropped Counter32, radiusAuthServExtUnknownTypes Counter32, radiusAuthServCounterDiscontinuity TimeTicks } radiusAuthClientExtIndex OBJECT-TYPE SYNTAX Integer32 (1..2147483647) MAX-ACCESS not-accessible STATUS current DESCRIPTION "A number uniquely identifying each RADIUS authentication client with which this server communicates." Nelson Standards Track [Page 14]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 ::= { radiusAuthClientExtEntry 1 } radiusAuthClientInetAddressType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS read-only STATUS current DESCRIPTION "The type of address format used for the radiusAuthClientInetAddress object." ::= { radiusAuthClientExtEntry 2 } radiusAuthClientInetAddress OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The IP address of the RADIUS authentication client referred to in this table entry, using the version-neutral IP address format." ::= { radiusAuthClientExtEntry 3 } radiusAuthClientExtID OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-only STATUS current DESCRIPTION "The NAS-Identifier of the RADIUS authentication client referred to in this table entry. This is not necessarily the same as sysName in MIB II." REFERENCE "RFC 2865 section 5.32" ::= { radiusAuthClientExtEntry 4 } -- Server Counters -- -- Responses = AccessAccepts + AccessRejects + AccessChallenges -- -- Requests - DupRequests - BadAuthenticators - MalformedRequests - -- UnknownTypes - PacketsDropped - Responses = Pending -- -- Requests - DupRequests - BadAuthenticators - MalformedRequests - -- UnknownTypes - PacketsDropped = entries logged radiusAuthServExtAccessRequests OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only Nelson Standards Track [Page 15]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 STATUS current DESCRIPTION "The number of packets received on the authentication port from this client. This counter may experience a discontinuity when the RADIUS Server module within the managed entity is reinitialized, as indicated by the current value of radiusAuthServCounterDiscontinuity." REFERENCE "RFC 2865 section 4.1" ::= { radiusAuthClientExtEntry 5 } radiusAuthServExtDupAccessRequests OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of duplicate RADIUS Access-Request packets received from this client. This counter may experience a discontinuity when the RADIUS Server module within the managed entity is reinitialized, as indicated by the current value of radiusAuthServCounterDiscontinuity." REFERENCE "RFC 2865 section 4.1" ::= { radiusAuthClientExtEntry 6 } radiusAuthServExtAccessAccepts OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Access-Accept packets sent to this client. This counter may experience a discontinuity when the RADIUS Server module within the managed entity is reinitialized, as indicated by the current value of radiusAuthServCounterDiscontinuity." REFERENCE "RFC 2865 section 4.2" ::= { radiusAuthClientExtEntry 7 } radiusAuthServExtAccessRejects OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Access-Reject packets sent to this client. This counter may experience a discontinuity when the RADIUS Server module within the Nelson Standards Track [Page 16]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 managed entity is reinitialized, as indicated by the current value of radiusAuthServCounterDiscontinuity." REFERENCE "RFC 2865 section 4.3" ::= { radiusAuthClientExtEntry 8 } radiusAuthServExtAccessChallenges OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Access-Challenge packets sent to this client. This counter may experience a discontinuity when the RADIUS Server module within the managed entity is reinitialized, as indicated by the current value of radiusAuthServCounterDiscontinuity." REFERENCE "RFC 2865 section 4.4" ::= { radiusAuthClientExtEntry 9 } radiusAuthServExtMalformedAccessRequests OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of malformed RADIUS Access-Request packets received from this client. Bad authenticators and unknown types are not included as malformed Access-Requests. This counter may experience a discontinuity when the RADIUS Server module within the managed entity is reinitialized, as indicated by the current value of radiusAuthServCounterDiscontinuity." REFERENCE "RFC 2865 sections 3, 4.1" ::= { radiusAuthClientExtEntry 10 } radiusAuthServExtBadAuthenticators OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Authentication-Request packets that contained invalid Message Authenticator attributes received from this client. This counter may experience a discontinuity when the RADIUS Server module within the managed entity is reinitialized, as indicated by the current value of radiusAuthServCounterDiscontinuity." Nelson Standards Track [Page 17]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 REFERENCE "RFC 2865 section 3" ::= { radiusAuthClientExtEntry 11 } radiusAuthServExtPacketsDropped OBJECT-TYPE SYNTAX Counter32 UNITS "packets" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of incoming packets from this client silently discarded for some reason other than malformed, bad authenticators or unknown types. This counter may experience a discontinuity when the RADIUS Server module within the managed entity is reinitialized, as indicated by the current value of radiusAuthServCounterDiscontinuity." REFERENCE "RFC 2865 section 3" ::= { radiusAuthClientExtEntry 12 } radiusAuthServExtUnknownTypes 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 Server module within the managed entity is reinitialized, as indicated by the current value of radiusAuthServCounterDiscontinuity." REFERENCE "RFC 2865 section 4" ::= { radiusAuthClientExtEntry 13 } radiusAuthServCounterDiscontinuity OBJECT-TYPE SYNTAX TimeTicks UNITS "centiseconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The number of centiseconds since the last discontinuity in the RADIUS Server counters. A discontinuity may be the result of a reinitialization of the RADIUS Server module within the managed entity." ::= { radiusAuthClientExtEntry 14 } Nelson Standards Track [Page 18]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 -- conformance information radiusAuthServMIBConformance OBJECT IDENTIFIER ::= { radiusAuthServMIB 2 } radiusAuthServMIBCompliances OBJECT IDENTIFIER ::= { radiusAuthServMIBConformance 1 } radiusAuthServMIBGroups OBJECT IDENTIFIER ::= { radiusAuthServMIBConformance 2 } -- compliance statements radiusAuthServMIBCompliance MODULE-COMPLIANCE STATUS deprecated DESCRIPTION "The compliance statement for authentication servers implementing the RADIUS Authentication 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 { radiusAuthServMIBGroup } OBJECT radiusAuthServConfigReset WRITE-SYNTAX INTEGER { reset(2) } DESCRIPTION "The only SETable value is 'reset' (2)." ::= { radiusAuthServMIBCompliances 1 } radiusAuthServMIBExtCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for authentication servers implementing the RADIUS Authentication Server IPv6 Extensions MIB. Implementation of this module is for entities that support IPv6, or support IPv4 and IPv6." MODULE -- this module MANDATORY-GROUPS { radiusAuthServExtMIBGroup } OBJECT radiusAuthServConfigReset WRITE-SYNTAX INTEGER { reset(2) } DESCRIPTION "The only SETable value is 'reset' (2)." OBJECT radiusAuthClientInetAddressType Nelson Standards Track [Page 19]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 SYNTAX InetAddressType { ipv4(1), ipv6(2) } DESCRIPTION "An implementation is only required to support IPv4 and globally unique IPv6 addresses." OBJECT radiusAuthClientInetAddress SYNTAX InetAddress ( SIZE (4|16) ) DESCRIPTION "An implementation is only required to support IPv4 and globally unique IPv6 addresses." ::= { radiusAuthServMIBCompliances 2 } -- units of conformance radiusAuthServMIBGroup OBJECT-GROUP OBJECTS {radiusAuthServIdent, radiusAuthServUpTime, radiusAuthServResetTime, radiusAuthServConfigReset, radiusAuthServTotalAccessRequests, radiusAuthServTotalInvalidRequests, radiusAuthServTotalDupAccessRequests, radiusAuthServTotalAccessAccepts, radiusAuthServTotalAccessRejects, radiusAuthServTotalAccessChallenges, radiusAuthServTotalMalformedAccessRequests, radiusAuthServTotalBadAuthenticators, radiusAuthServTotalPacketsDropped, radiusAuthServTotalUnknownTypes, radiusAuthClientAddress, radiusAuthClientID, radiusAuthServAccessRequests, radiusAuthServDupAccessRequests, radiusAuthServAccessAccepts, radiusAuthServAccessRejects, radiusAuthServAccessChallenges, radiusAuthServMalformedAccessRequests, radiusAuthServBadAuthenticators, radiusAuthServPacketsDropped, radiusAuthServUnknownTypes } STATUS deprecated DESCRIPTION "The collection of objects providing management of a RADIUS Authentication Server." ::= { radiusAuthServMIBGroups 1 } Nelson Standards Track [Page 20]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 radiusAuthServExtMIBGroup OBJECT-GROUP OBJECTS {radiusAuthServIdent, radiusAuthServUpTime, radiusAuthServResetTime, radiusAuthServConfigReset, radiusAuthServTotalAccessRequests, radiusAuthServTotalInvalidRequests, radiusAuthServTotalDupAccessRequests, radiusAuthServTotalAccessAccepts, radiusAuthServTotalAccessRejects, radiusAuthServTotalAccessChallenges, radiusAuthServTotalMalformedAccessRequests, radiusAuthServTotalBadAuthenticators, radiusAuthServTotalPacketsDropped, radiusAuthServTotalUnknownTypes, radiusAuthClientInetAddressType, radiusAuthClientInetAddress, radiusAuthClientExtID, radiusAuthServExtAccessRequests, radiusAuthServExtDupAccessRequests, radiusAuthServExtAccessAccepts, radiusAuthServExtAccessRejects, radiusAuthServExtAccessChallenges, radiusAuthServExtMalformedAccessRequests, radiusAuthServExtBadAuthenticators, radiusAuthServExtPacketsDropped, radiusAuthServExtUnknownTypes, radiusAuthServCounterDiscontinuity } STATUS current DESCRIPTION "The collection of objects providing management of a RADIUS Authentication Server." ::= { radiusAuthServMIBGroups 2 } END 8. Security Considerations There are a number of management objects 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: Nelson Standards Track [Page 21]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 radiusAuthServConfigReset 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: radiusAuthClientIPAddress This can be used to determine the address of the RADIUS authentication client with which the server is communicating. This information could be useful in mounting an attack on the authentication client. radiusAuthClientInetAddress This can be used to determine the address of the RADIUS authentication client with which the server is communicating. This information could be useful in mounting an attack on the authentication 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. Nelson Standards Track [Page 22]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 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. [RFC2865] Rigney, C., Willens, S., Rubens, A., and W. Simpson, "Remote Authentication Dial In User Service (RADIUS)", RFC 2865, 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 [RFC2619] Zorn, G. and B. Aboba, "RADIUS Authentication Server MIB", RFC 2619, June 1999. [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, December 2002. [RFC4668] Nelson, D., "RADIUS Authentication Client MIB for IPv6", RFC 4668, August 2006. Nelson Standards Track [Page 23]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 Appendix A. Acknowledgements The authors of the original MIB are Bernard Aboba and Glen Zorn. Many thanks to all reviewers, especially to David 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 Nelson Standards Track [Page 24]
RFC 4669 RADIUS Auth Server MIB (IPv6) August 2006 Full Copyright Statement Copyright (C) The Internet Society (2006). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Intellectual Property The IETF takes no position regarding the validity or scope of any Intellectual Property Rights or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; nor does it represent that it has made any independent effort to identify any such rights. Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. Acknowledgement Funding for the RFC Editor function is provided by the IETF Administrative Support Activity (IASA). Nelson Standards Track [Page 25]
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