Network Working Group D. Nelson Internet-Draft Enterasys Networks Updates: RFC 2620 (if approved) July 17, 2005 Expires: January 18, 2006 RADIUS Acct Client MIB (IPv6) draft-nelson-rfc2620bis-01.txt Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on January 18, 2006. Copyright Notice Copyright (C) The Internet Society (2005). Abstract This memo updates 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. Nelson Expires January 18, 2006 [Page 1]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 Table of Contents 1. Terminology . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 3. The Internet-Standard Management Framework . . . . . . . . . 3 4. Scope of Changes . . . . . . . . . . . . . . . . . . . . . . 3 5. Structure of the MIB Module . . . . . . . . . . . . . . . . 4 6. Deprecated Objects . . . . . . . . . . . . . . . . . . . . . 4 7. Definitions . . . . . . . . . . . . . . . . . . . . . . . . 4 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . 16 9. Security Considerations . . . . . . . . . . . . . . . . . . 16 10. References . . . . . . . . . . . . . . . . . . . . . . . . . 17 10.1 Normative References . . . . . . . . . . . . . . . . . . 17 10.2 Informative References . . . . . . . . . . . . . . . . . 18 Author's Address . . . . . . . . . . . . . . . . . . . . . . 18 A. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . 18 Intellectual Property and Copyright Statements . . . . . . . 19 Nelson Expires January 18, 2006 [Page 2]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 1. Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119]. This document uses terminology from RFC 2866 [RFC2866]. 2. Introduction This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. The objects defined within this memo relate to the Remote Authentication Dial-In User Service (RADIUS) Accounting Client as defined in RFC 2866 [RFC2866]. 3. The Internet-Standard Management Framework For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410]. Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. MIB objects are generally accessed through the Simple Network Management Protocol (SNMP). Objects in the MIB are defined using the mechanisms defined in the Structure of Management Information (SMI). This memo specifies a MIB module that is compliant to the SMIv2, which is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580]. 4. Scope of Changes This document updates RFC 2620 [RFC2620], RADIUS Authentication Client MIB, by deprecating the radiusAuthServerTable table and adding a new table, radiusAuthServerExtTable, containing radiusAuthServerInetAddressType, radiusAuthServerInetAddress, and radiusAuthClientServerInetPortNumber. The purpose of these added MIB objects is to support version neutral IP addressing formats. The existing table containing radiusAuthServerAddress and radiusAuthClientServerPortNumber is deprecated. RFC 4001 [RFC4001], which defines the SMI Textual Conventions for IPv6 addresses, contains the following recommendation. 'In particular, when revising a MIB module that contains IPv4 specific tables, it is suggested to define new tables using the textual conventions defined in this memo [RFC 4001] that support all Nelson Expires January 18, 2006 [Page 3]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 versions of IP. The status of the new tables SHOULD be "current", whereas the status of the old IP version specific tables SHOULD be changed to "deprecated". The other approach, of having multiple similar tables for different IP versions, is strongly discouraged.' 5. Structure of the MIB Module The structure of the MIB Module defined in this memo corresponds to the structure of the MIB Module defined in RADIUS Authentication Client MIB, RFC 2620 [RFC2620]. This MIB module contains two scalars as well as a single table, the RADIUS Accounting Server Table, which contains one row for each RADIUS server with which the client shares a secret. Each entry in the RADIUS Accounting Server Table includes fifteen columns presenting a view of the activity of the RADIUS client. 6. Deprecated Objects The deprecated table in this MIB is carried forward from RFC 2620 [RFC2620]. There are two conditions under which it MAY be desirable for managed entities to continue to support the deprecated table: 1. The managed entity only supports IPv4 address formats. 2. The managed entity supports both IPv4 and IPv6 address formats, and the deprecated table is supported for backwards compatibility with older management stations. This option SHOULD only be used when the IP addresses in the new table are in IPv4 format and can accurately be represented in both the new table and the deprecated table. Managed entities SHOULD NOT instantiate the deprecated table containing IPv4-only address objects when the RADIUS server address represented in the table row is not an IPv4 address. Managed entities SHOULD NOT return inaccurate values of IP address or SNMP object access errors for IPv4-only address objects in otherwise populated tables. 7. Definitions RADIUS-ACCT-CLIENT-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, OBJECT-IDENTITY, Counter32, Integer32, Gauge32, IpAddress, TimeTicks, mib-2 FROM SNMPv2-SMI SnmpAdminString FROM SNMP-FRAMEWORK-MIB InetAddressType, InetAddress, Nelson Expires January 18, 2006 [Page 4]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 InetPortNumber FROM INET-ADDRESS-MIB MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF; radiusAccClientMIB MODULE-IDENTITY LAST-UPDATED "200507150000Z" -- 15 Jul 2005 ORGANIZATION "IETF RADIUS Working Group." CONTACT-INFO " Bernard Aboba Microsoft One Microsoft Way Redmond, WA 98052 US Phone: +1 425 936 6605 EMail: bernarda@microsoft.com" DESCRIPTION "The MIB module for entities implementing the client side of the Remote Authentication Dial-In User Service (RADIUS) accounting protocol." REVISION "9906110000Z" -- 11 Jun 1999 DESCRIPTION "Initial version as published in RFC 2620" REVISION "200507150000Z" -- 15 Jul 2005 DESCRIPTION "Revised version as published in RFC XXXX" -- RFC Editor: replace xxx with actual RFC number at the time of -- publication, and remove this note. ::= { radiusAccounting 2 } radiusMIB OBJECT-IDENTITY STATUS current DESCRIPTION "The OID assigned to RADIUS MIB work by the IANA." ::= { mib-2 67 } radiusAccClientExtMIB OBJECT-IDENTITY STATUS current DESCRIPTION "The OID assigned to RADIUS MIB Extension work by the IANA." ::= { mib-2 TBA } -- RFC Editor: replace TBA with IANA assigned OID value, and -- remove this note. radiusAccounting OBJECT IDENTIFIER ::= {radiusMIB 2} radiusAccClientMIBObjects OBJECT IDENTIFIER Nelson Expires January 18, 2006 [Page 5]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 ::= { radiusAccClientMIB 1 } radiusAccClient OBJECT IDENTIFIER ::= { radiusAccClientMIBObjects 1 } radiusAccClientInvalidServerAddresses OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Response packets received from unknown addresses." ::= { radiusAccClient 1 } radiusAccClientIdentifier OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-only STATUS current DESCRIPTION "The NAS-Identifier of the RADIUS accounting client. This is not necessarily the same as sysName in MIB II." ::= { radiusAccClient 2 } radiusAccServerTable OBJECT-TYPE SYNTAX SEQUENCE OF RadiusAccServerEntry MAX-ACCESS not-accessible STATUS deprecated DESCRIPTION "The (conceptual) table listing the RADIUS accounting servers with which the client shares a secret." ::= { radiusAccClient 3 } radiusAccServerEntry OBJECT-TYPE SYNTAX RadiusAccServerEntry MAX-ACCESS not-accessible STATUS deprecated DESCRIPTION "An entry (conceptual row) representing a RADIUS accounting server with which the client shares a secret." INDEX { radiusAccServerIndex } ::= { radiusAccServerTable 1 } RadiusAccServerEntry ::= SEQUENCE { radiusAccServerIndex Integer32, radiusAccServerAddress IpAddress, radiusAccClientServerPortNumber Integer32, Nelson Expires January 18, 2006 [Page 6]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 radiusAccClientRoundTripTime TimeTicks, radiusAccClientRequests Counter32, radiusAccClientRetransmissions Counter32, radiusAccClientResponses Counter32, radiusAccClientMalformedResponses Counter32, radiusAccClientBadAuthenticators Counter32, radiusAccClientPendingRequests Gauge32, radiusAccClientTimeouts Counter32, radiusAccClientUnknownTypes Counter32, radiusAccClientPacketsDropped Counter32 } radiusAccServerIndex OBJECT-TYPE SYNTAX Integer32 (1..2147483647) MAX-ACCESS not-accessible STATUS deprecated DESCRIPTION "A number uniquely identifying each RADIUS Accounting server with which this client communicates." ::= { radiusAccServerEntry 1 } radiusAccServerAddress OBJECT-TYPE SYNTAX IpAddress MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The IP address of the RADIUS accounting server referred to in this table entry." ::= { radiusAccServerEntry 2 } radiusAccClientServerPortNumber OBJECT-TYPE SYNTAX Integer32 (0..65535) MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The UDP port the client is using to send requests to this server." ::= { radiusAccServerEntry 3 } radiusAccClientRoundTripTime OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The time interval between the most recent Accounting-Response and the Accounting-Request that matched it from this RADIUS accounting server." Nelson Expires January 18, 2006 [Page 7]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 ::= { radiusAccServerEntry 4 } -- Request/Response statistics -- -- Requests = Responses + PendingRequests + ClientTimeouts -- -- Responses - MalformedResponses - BadAuthenticators - -- UnknownTypes - PacketsDropped = Successfully received radiusAccClientRequests OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Accounting-Request packets sent. This does not include retransmissions." ::= { radiusAccServerEntry 5 } radiusAccClientRetransmissions OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Accounting-Request packets retransmitted to this RADIUS accounting server. Retransmissions include retries where the Identifier and Acct-Delay have been updated, as well as those in which they remain the same." ::= { radiusAccServerEntry 6 } radiusAccClientResponses OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS packets received on the accounting port from this server." ::= { radiusAccServerEntry 7 } radiusAccClientMalformedResponses OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of malformed RADIUS Accounting-Response packets received from this server. Malformed packets include packets with an invalid length. Bad authenticators and unknown types are not included as Nelson Expires January 18, 2006 [Page 8]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 malformed accounting responses." ::= { radiusAccServerEntry 8 } radiusAccClientBadAuthenticators OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Accounting-Response packets which contained invalid authenticators received from this server." ::= { radiusAccServerEntry 9 } radiusAccClientPendingRequests OBJECT-TYPE SYNTAX Gauge32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS Accounting-Request packets sent to this server that have not yet timed out or received a response. This variable is incremented when an Accounting-Request is sent and decremented due to receipt of an Accounting-Response, a timeout or a retransmission." ::= { radiusAccServerEntry 10 } radiusAccClientTimeouts OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of accounting timeouts to this server. After a timeout the client may retry to the same server, send to a different server, or give up. A retry to the same server is counted as a retransmit as well as a timeout. A send to a different server is counted as an Accounting-Request as well as a timeout." ::= { radiusAccServerEntry 11 } radiusAccClientUnknownTypes OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS packets of unknown type which were received from this server on the accounting port." ::= { radiusAccServerEntry 12 } Nelson Expires January 18, 2006 [Page 9]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 radiusAccClientPacketsDropped OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS deprecated DESCRIPTION "The number of RADIUS packets which were received from this server on the accounting port and dropped for some other reason." ::= { radiusAccServerEntry 13 } -- Extended MIB Objects radiusAccClientExtMIBObjects OBJECT IDENTIFIER ::= { radiusAccClientExtMIB 1 } radiusAccClientExt OBJECT IDENTIFIER ::= { radiusAccClientExtMIBObjects 1 } radiusAccServerExtTable OBJECT-TYPE SYNTAX SEQUENCE OF RadiusAccServerExtEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The (conceptual) table listing the RADIUS accounting servers with which the client shares a secret." ::= { radiusAccClientExt 1 } 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, Nelson Expires January 18, 2006 [Page 10]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 radiusAccClientExtResponses Counter32, radiusAccClientExtMalformedResponses Counter32, radiusAccClientExtBadAuthenticators Counter32, radiusAccClientExtPendingRequests Gauge32, radiusAccClientExtTimeouts Counter32, radiusAccClientExtUnknownTypes Counter32, radiusAccClientExtPacketsDropped Counter32 } radiusAccServerExtIndex OBJECT-TYPE SYNTAX Integer32 (1..2147483647) MAX-ACCESS not-accessible STATUS current DESCRIPTION "A number uniquely identifying each RADIUS Accounting server with which this client communicates." ::= { radiusAccServerExtEntry 1 } radiusAccServerInetAddressType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS read-only STATUS current DESCRIPTION "The type of address format used for the radiusAccServerInetAddress object." ::= { radiusAccServerExtEntry 2 } radiusAccServerInetAddress OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The IP address of the RADIUS accounting server referred to in this table entry, using the IPv6 adddess format." ::= { radiusAccServerExtEntry 3 } radiusAccClientServerInetPortNumber OBJECT-TYPE SYNTAX InetPortNumber MAX-ACCESS read-only STATUS current DESCRIPTION "The UDP port the client is using to send requests to this accounting server." ::= { radiusAccServerExtEntry 4 } Nelson Expires January 18, 2006 [Page 11]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 radiusAccClientExtRoundTripTime OBJECT-TYPE SYNTAX TimeTicks MAX-ACCESS read-only STATUS current DESCRIPTION "The time interval between the most recent Accounting-Response and the Accounting-Request that matched it from this RADIUS accounting server." ::= { radiusAccServerExtEntry 5 } -- Request/Response statistics -- -- Requests = Responses + PendingRequests + ClientTimeouts -- -- Responses - MalformedResponses - BadAuthenticators - -- UnknownTypes - PacketsDropped = Successfully received radiusAccClientExtRequests OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Request packets sent. This does not include retransmissions." ::= { radiusAccServerExtEntry 6 } radiusAccClientExtRetransmissions OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Request packets retransmitted to this RADIUS accounting server. Retransmissions include retries where the Identifier and Acct-Delay have been updated, as well as those in which they remain the same." ::= { radiusAccServerExtEntry 7 } radiusAccClientExtResponses OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS packets received on the accounting port from this server." ::= { radiusAccServerExtEntry 8 } radiusAccClientExtMalformedResponses OBJECT-TYPE Nelson Expires January 18, 2006 [Page 12]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of malformed RADIUS Accounting-Response packets received from this server. Malformed packets include packets with an invalid length. Bad authenticators and unknown types are not included as malformed accounting responses." ::= { radiusAccServerExtEntry 9 } radiusAccClientExtBadAuthenticators OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Response packets which contained invalid authenticators received from this server." ::= { radiusAccServerExtEntry 10 } radiusAccClientExtPendingRequests OBJECT-TYPE SYNTAX Gauge32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS Accounting-Request packets sent to this server that have not yet timed out or received a response. This variable is incremented when an Accounting-Request is sent and decremented due to receipt of an Accounting-Response, a timeout or a retransmission." ::= { radiusAccServerExtEntry 11 } radiusAccClientExtTimeouts OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of accounting timeouts to this server. After a timeout the client may retry to the same server, send to a different server, or give up. A retry to the same server is counted as a retransmit as well as a timeout. A send to a different server is counted as an Accounting-Request as well as a timeout." ::= { radiusAccServerExtEntry 12 } Nelson Expires January 18, 2006 [Page 13]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 radiusAccClientExtUnknownTypes OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS packets of unknown type which were received from this server on the accounting port." ::= { radiusAccServerExtEntry 13 } radiusAccClientExtPacketsDropped OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RADIUS packets which were received from this server on the accounting port and dropped for some other reason." ::= { radiusAccServerExtEntry 14 } -- conformance information radiusAccClientMIBConformance OBJECT IDENTIFIER ::= { radiusAccClientMIB 2 } radiusAccClientMIBCompliances OBJECT IDENTIFIER ::= { radiusAccClientMIBConformance 1 } radiusAccClientMIBGroups OBJECT IDENTIFIER ::= { radiusAccClientMIBConformance 2 } radiusAccClientExtMIBConformance OBJECT IDENTIFIER ::= { radiusAccClientExtMIB 2 } radiusAccClientExtMIBCompliances OBJECT IDENTIFIER ::= { radiusAccClientExtMIBConformance 1 } radiusAccClientExtMIBGroups OBJECT IDENTIFIER ::= { radiusAccClientExtMIBConformance 2 } -- units of conformance radiusAccClientMIBCompliance MODULE-COMPLIANCE STATUS deprecated DESCRIPTION "The compliance statement for accounting clients Nelson Expires January 18, 2006 [Page 14]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 implementing the RADIUS Accounting Client MIB." MODULE -- this module MANDATORY-GROUPS { radiusAccClientMIBGroup } ::= { radiusAccClientMIBCompliances 1 } radiusAccClientExtMIBCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for accounting clients implementing the RADIUS Accounting Client MIB." MODULE -- this module MANDATORY-GROUPS { radiusAccClientMIBGroup } ::= { radiusAccClientExtMIBCompliances 1 } -- 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, Nelson Expires January 18, 2006 [Page 15]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 radiusAccClientExtServerInetPortNumber, radiusAccClientExtRoundTripTime, radiusAccClientExtRequests, radiusAccClientExtRetransmissions, radiusAccClientExtResponses, radiusAccClientExtMalformedResponses, radiusAccClientExtBadAuthenticators, radiusAccClientExtPendingRequests, radiusAccClientExtTimeouts, radiusAccClientExtUnknownTypes, radiusAccClientExtPacketsDropped } STATUS current DESCRIPTION "The basic collection of objects providing management of RADIUS Accounting Clients." ::= { radiusAccClientExtMIBGroups 1 } END 8. IANA Considerations This document requires IANA assignment of a number in the MIB-2 OID number space. 9. Security Considerations There are no management objects defined in this MIB that have a MAX- ACCESS clause of read-write and/or read-create. So, if this MIB is implemented correctly, then there is no risk that an intruder can alter or create any management objects of this MIB via direct SNMP SET operations. There are a number of managed objects in this MIB that may contain sensitive information. These are: radiusAcctServerIPAddress This can be used to determine the address of the RADIUS accounting server with which the client is communicating. This information could be useful in mounting an attack on the accounting server. radiusAcctServerInetAddress This can be used to determine the address of the RADIUS accounting server with which the client is communicating. This information could be useful in mounting an attack on the accounting server. Nelson Expires January 18, 2006 [Page 16]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 radiusAcctClientServerPortNumber This can be used to determine the port number on which the RADIUS accounting client is sending. This information could be useful in impersonating the client in order to send data to the accounting server. radiusAcctClientServerInetPortNumber This can be used to determine the port number on which the RADIUS accounting client is sending. This information could be useful in impersonating the client in order to send data to the accounting server. It is thus important to control even GET access to these objects and possibly to even encrypt the values of these object when sending them over the network via SNMP. Not all versions of SNMP provide features for such a secure environment. SNMP versions prior to SNMPv3 do not provide a secure environment. Even if the network itself is secure (for example by using IPSec), there is no control as to who on the secure network is allowed to access and GET/SET (read/change/create/delete) the objects in this MIB. It is recommended that the implementers consider the security features as provided by the SNMPv3 framework. Specifically, the use of the User-based Security Model [RFC2574] and the View-based Access Control Model [RFC2575] is recommended. Using these security features, customer/users can give access to the objects only to those principals (users) that have legitimate rights to GET or SET (change/ create/delete) them. 10. References 10.1 Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2574] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)", RFC 2574, April 1999. [RFC2575] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based Access Control Model (VACM) for the Simple Network Management Protocol (SNMP)", RFC 2575, April 1999. [RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999. Nelson Expires January 18, 2006 [Page 17]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 [RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999. [RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999. [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, December 2002. [RFC3418] Presuhn, R., "Management Information Base (MIB) for the Simple Network Management Protocol (SNMP)", STD 62, RFC 3418, December 2002. [RFC4001] Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, "Textual Conventions for Internet Network Addresses", RFC 4001, February 2005. 10.2 Informative References [RFC2620] Aboba, B. and G. Zorn, "RADIUS Accounting Client MIB", RFC 2620, June 1999. [RFC2866] Rigney, C., "RADIUS Accounting", RFC 2866, June 2000. Author's Address David B. Nelson Enterasys Networks 50 Minuteman Road Andover, MA 01810 USA Email: dnelson@enterasys.com Appendix A. Acknowledgments The Authors of the original MIB are Bernard Aboba and Glen Zorn. Many thanks to all reviewers, especially to Dave Harrington, Dan Romascanu, C.M. Heard, Bruno Pape and Greg Weber. Nelson Expires January 18, 2006 [Page 18]
Internet-Draft RADIUS Acct Client MIB (IPv6) July 2005 Intellectual Property Statement 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. Disclaimer of Validity 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. Copyright Statement Copyright (C) The Internet Society (2005). 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. Acknowledgment Funding for the RFC Editor function is currently provided by the Internet Society. Nelson Expires January 18, 2006 [Page 19]