One document matched: draft-decnodder-radext-dynauth-client-mib-02.txt
Differences from draft-decnodder-radext-dynauth-client-mib-01.txt
Network Working Group S. De Cnodder
Internet-Draft Alcatel
Expires: May 25, 2005 N. Jonnala
Future Soft
M. Chiba
Cisco Systems, Inc.
November 24, 2004
Dynamic Authorization Client MIB
draft-decnodder-radext-dynauth-client-mib-02.txt
Status of this Memo
This document is an Internet-Draft and is subject to all provisions
of section 3 of RFC 3667. 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 become aware will be disclosed, in accordance with
RFC 3668.
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 May 25, 2005.
Copyright Notice
Copyright (C) The Internet Society (2004).
Abstract
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes the RADIUS dynamic authorization client
(DAC) functions that support the dynamic authorization extensions as
De Cnodder, et al. Expires May 25, 2005 [Page 1]
Internet-Draft Dynamic Authorization Client MIB November 2004
defined in RFC3576.
Table of Contents
1. Requirements notation . . . . . . . . . . . . . . . . . . . . 3
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. The Internet-Standard Management Framework . . . . . . . . . . 5
4. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 6
5. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6. RADIUS Dynamic Authorization Client MIB Definitions . . . . . 9
7. Security Considerations . . . . . . . . . . . . . . . . . . . 19
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 21
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.1 Normative References . . . . . . . . . . . . . . . . . . . . 22
9.2 Informative References . . . . . . . . . . . . . . . . . . . 22
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 23
Intellectual Property and Copyright Statements . . . . . . . . 24
De Cnodder, et al. Expires May 25, 2005 [Page 2]
Internet-Draft Dynamic Authorization Client MIB November 2004
1. Requirements notation
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 [RFC2119].
De Cnodder, et al. Expires May 25, 2005 [Page 3]
Internet-Draft Dynamic Authorization Client MIB November 2004
2. Introduction
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
It is becoming unavoidable to support Dynamic Authorization
extensions to send the Disconnect and CoA requests to the NAS devices
as described in [RFC3576] . As a result, the effective management of
RADIUS Dynamic Authorization entities is of considerable importance.
It complements the managed objects used for managing RADIUS
authentication and accounting servers as described in [RFC2619] and
[RFC2621], respectively.
De Cnodder, et al. Expires May 25, 2005 [Page 4]
Internet-Draft Dynamic Authorization Client MIB November 2004
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
[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,
RFC2578 [RFC2578], STD 58, RFC2579 [RFC2579] and STD 58, RFC2580
[RFC2580].
De Cnodder, et al. Expires May 25, 2005 [Page 5]
Internet-Draft Dynamic Authorization Client MIB November 2004
4. Terminology
Dynamic Authorization Server (DAS)
The component that resides on the NAS which processes the Disconnect
and CoA requests sent by the Dynamic Authorization Client as
described in [RFC3576].
Dynamic Authorization Client (DAC)
The component which sends the Disconnect and CoA requests to the
Dynamic Authorization Server as described in [RFC3576].
Dynamic Authorization Server Port
The UDP port on which the Dynamic Authorization server listens for
the Disconnect and CoA requests sent by the Dynamic Authorization
Client.
De Cnodder, et al. Expires May 25, 2005 [Page 6]
Internet-Draft Dynamic Authorization Client MIB November 2004
5. Overview
The RADIUS dynamic authorization extensions defined in [RFC3576],
distinguishes between the client function and the server function.
In RADIUS dynamic authorization, clients send Disconnect-Requests and
CoA-Requests, and servers reply with Disconnect-Acks, CoA-Acks, and
CoA-NAKs. Typically NAS devices implement the DAS function, and thus
would be expected to implement the RADIUS dynamic authorization
server MIB, while DACs implement the client function, and thus would
be expected to implement the RADIUS dynamic authorization client MIB.
However, it is possible for a RADIUS dynamic authorization entity to
perform both client and server functions. For example, a RADIUS
proxy may act as a DAS to one or more DACs, while simultaneously
acting as a DAC to one or more DASs. In such situations, it is
expected that RADIUS entities combining client and server
functionality will support both the client and server MIBs.
This memo describes the MIB for dynamic authorization clients and
relates to the following document as follows:
[RFC2618] describes the MIB for a RADIUS authentication client.
[RFC2619] describes the MIB for a RADIUS authentication server.
[RFC2620] describes the MIB for a RADIUS accounting client.
[RFC2621] describes the MIB for a RADIUS accounting server.
[DYNSERV] describes the MIB for a RADIUS dynamic authorization
server.
+---------------+ +---------------+
User 1----| | Disconnect-Request | |
| Dynamic | CoA-Request | Dynamic |
user 2----| Authorization |<---------------------| Authorization |
| Server |--------------------->| Client |
User 3----| (DAS) | Disconnect-Ack | (DAC) |
| | Disconnect-NAK | |
+---------------+ CoA-Ack/CoA-NAK +---------------+
Figure 1: Mapping of clients and servers.
This MIB module contains the following.
1. two scalar objects
De Cnodder, et al. Expires May 25, 2005 [Page 7]
Internet-Draft Dynamic Authorization Client MIB November 2004
2. One Dynamic Authorization Server Table. This table contains one
row for each DAS that the DAC shares a secret with.
De Cnodder, et al. Expires May 25, 2005 [Page 8]
Internet-Draft Dynamic Authorization Client MIB November 2004
6. RADIUS Dynamic Authorization Client MIB Definitions
RADIUS-DYNAUTH-CLIENT-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, OBJECT-IDENTITY,
Counter32, Gauge32, Integer32,
mib-2, TimeTicks FROM SNMPv2-SMI
SnmpAdminString FROM SNMP-FRAMEWORK-MIB
InetAddressType, InetAddress FROM INET-ADDRESS-MIB
MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF;
radiusDynAuthClientMIB MODULE-IDENTITY
LAST-UPDATED "200404260000Z" -- 26 April 2004
ORGANIZATION "IETF RADEXT Working Group"
CONTACT-INFO
" Stefaan De Cnodder
Alcatel
Francis Wellesplein 1
B-2018 Antwerp
Belgium
Phone: +32 3 240 85 15
EMail: stefaan.de_cnodder@alcatel.be
Nagi Reddy Jonnala
Future Soft
480 - 481, Anna Salai
Nandanam, Chennai
India
EMail: nagi_reddy.jonnala@alcatel.be
Murtaza Chiba
Cisco Systems, Inc.
170 West Tasman Dr.
San Jose CA, 95134
Phone: +1 408 525 7198
EMail: mchiba@cisco.com "
DESCRIPTION
"The MIB module for entities implementing the client
side of the Dynamic Authorization extensions Remote
Access Dialin User Service (RADIUS) protocol.
Copyright (C) The Internet Society (date). This version
of this MIB module is part of RFC yyyy; see the RFC
itself for full legal notices."
De Cnodder, et al. Expires May 25, 2005 [Page 9]
Internet-Draft Dynamic Authorization Client MIB November 2004
-- RFC Ed.: replace yyyy with actual RFC number & remove this note
REVISION "200404260000Z" -- 26 April 2004
DESCRIPTION "Initial version as published in RFC XXXX"
::= { radiusDynamicAuthorization 2 }
radiusMIB OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The OID assigned to RADIUS MIB work by the IANA."
::= { mib-2 67 }
-- Ed. Note: The next available OID 3 is picked for
-- radiusDynamicAuthorization.
radiusDynamicAuthorization OBJECT IDENTIFIER ::= { radiusMIB 3 }
radiusDynAuthClientMIBObjects OBJECT IDENTIFIER ::=
{ radiusDynAuthClientMIB 1 }
radiusDynAuthClient OBJECT IDENTIFIER ::=
{ radiusDynAuthClientMIBObjects 1 }
radiusDynAuthClientInvalidServerAddresses OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Dynamic Authorization messages
(both Disconnect and CoA) received from unknown
addresses."
::= { radiusDynAuthClient 1 }
radiusDynAuthClientIdentifier OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The implementation identification string for the
RADIUS dynamic authorization client software in use
on the system."
::= { radiusDynAuthClient 2 }
radiusDynAuthServerTable OBJECT-TYPE
SYNTAX SEQUENCE OF RadiusDynAuthServerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
De Cnodder, et al. Expires May 25, 2005 [Page 10]
Internet-Draft Dynamic Authorization Client MIB November 2004
"The (conceptual) table listing the RADIUS Dynamic
Authorization servers with which the client shares a
secret."
::= { radiusDynAuthClient 3 }
radiusDynAuthServerEntry OBJECT-TYPE
SYNTAX RadiusDynAuthServerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) representing the Dynamic
Authorization Server with which the server shares a
secret."
INDEX { radiusDynAuthServerIndex }
::= { radiusDynAuthServerTable 1 }
RadiusDynAuthServerEntry ::= SEQUENCE {
radiusDynAuthServerIndex Integer32,
radiusDynAuthServerAddressType InetAddressType,
radiusDynAuthServerAddress InetAddress,
radiusDynAuthServerClientPortNumber Integer32,
radiusDynAuthServerID SnmpAdminString,
radiusDynAuthClientRoundTripTime TimeTicks,
radiusDynAuthClientDisconRequests Counter32,
radiusDynAuthClientDisconRetransmissions Counter32,
radiusDynAuthClientDisconAcks Counter32,
radiusDynAuthClientDisconNaks Counter32,
radiusDynAuthClientMalformedDisconResponses Counter32,
radiusDynAuthClientDisconBadAuthenticators Counter32,
radiusDynAuthClientDisconPendingRequests Gauge32,
radiusDynAuthClientDisconTimeouts Counter32,
radiusDynAuthClientDisconPacketsDropped Counter32,
radiusDynAuthClientCoARequests Counter32,
radiusDynAuthClientCoARetransmissions Counter32,
radiusDynAuthClientCoAAcks Counter32,
radiusDynAuthClientCoANaks Counter32,
radiusDynAuthClientMalformedCoAResponses Counter32,
radiusDynAuthClientCoABadAuthenticators Counter32,
radiusDynAuthClientCoAPendingRequests Gauge32,
radiusDynAuthClientCoATimeouts Counter32,
radiusDynAuthClientCoAPacketsDropped Counter32,
radiusDynAuthClientUnknownTypes Counter32
}
radiusDynAuthServerIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
De Cnodder, et al. Expires May 25, 2005 [Page 11]
Internet-Draft Dynamic Authorization Client MIB November 2004
STATUS current
DESCRIPTION
"A number uniquely identifying each RADIUS
Dynamic Authorization server with which this Dynamic
Authorization client communicates."
::= { radiusDynAuthServerEntry 1 }
radiusDynAuthServerAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of IP-Address of the RADIUS Dynamic
Authorization server referred to in this table entry."
::= { radiusDynAuthServerEntry 2 }
radiusDynAuthServerAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The IP-Address value of the RADIUS Dynamic
Authorization server referred to in this table entry."
::= { radiusDynAuthServerEntry 3 }
radiusDynAuthServerClientPortNumber OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The UDP port the RADIUS Dynamic Authorization client is
using to send requests to this server."
::= { radiusDynAuthServerEntry 4 }
radiusDynAuthServerID OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The NAS-Identifier of the RADIUS Dynamic
Authorization server referred to in this table
entry."
::= { radiusDynAuthServerEntry 5 }
radiusDynAuthClientRoundTripTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
De Cnodder, et al. Expires May 25, 2005 [Page 12]
Internet-Draft Dynamic Authorization Client MIB November 2004
STATUS current
DESCRIPTION
"The time interval (in hundredths of a second) between
the most recent Disconnect-reply/CoA-reply and the
Disconnect or CoA request that matched it from this
RADIUS Dynamic Authorization server."
::= { radiusDynAuthServerEntry 6 }
radiusDynAuthClientDisconRequests OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Disconnect-Requests sent
to this Dynamic Authorization server."
::= { radiusDynAuthServerEntry 7 }
radiusDynAuthClientDisconRetransmissions OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Disconnect-request packets
retransmitted to this RADIUS Dynamic authorization
server."
::= { radiusDynAuthServerEntry 8 }
radiusDynAuthClientDisconAcks OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Disconnect-ACK packets
received from this Dynamic Authorization server"
::= { radiusDynAuthServerEntry 9 }
radiusDynAuthClientDisconNaks OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Disconnect-NAK packets
received from this Dynamic Authorization server."
::= { radiusDynAuthServerEntry 10 }
radiusDynAuthClientMalformedDisconResponses OBJECT-TYPE
SYNTAX Counter32
De Cnodder, et al. Expires May 25, 2005 [Page 13]
Internet-Draft Dynamic Authorization Client MIB November 2004
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of malformed RADIUS Disconnect-Response
packets received from this Dynamic Authorization
server. Bad authenticators and unknown types are not
included as malformed Disconnect-Responses."
::= { radiusDynAuthServerEntry 11 }
radiusDynAuthClientDisconBadAuthenticators OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Disconnect-Response packets
which contained invalid Signature attributes
received from this Dynamic Authorization server."
::= { radiusDynAuthServerEntry 12 }
radiusDynAuthClientDisconPendingRequests OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS Disconnect-request packets
destined for this server that have not yet timed out
or received a response. This variable is incremented
when an Disconnect-Request is sent and decremented
due to receipt of an Disconnect-Ack, Disconnect-NAK
or a timeout or a retransmission."
::= { radiusDynAuthServerEntry 13 }
radiusDynAuthClientDisconTimeouts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Disconnect request timeouts to this
server. After a timeout the client may retry to the
same 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 a
Disconnect-Request as well as a timeout."
::= { radiusDynAuthServerEntry 14 }
radiusDynAuthClientDisconPacketsDropped OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
De Cnodder, et al. Expires May 25, 2005 [Page 14]
Internet-Draft Dynamic Authorization Client MIB November 2004
STATUS current
DESCRIPTION
"The number of incoming Disconnect-Responses
from this Dynamic Authorization server silently
discarded for some reason other than malformed,
bad authenticators or unknown types."
::= { radiusDynAuthServerEntry 15 }
radiusDynAuthClientCoARequests OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS CoA-Requests sent to this
Dynamic Authorization server."
::= { radiusDynAuthServerEntry 16 }
radiusDynAuthClientCoARetransmissions OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS CoA-request packets
retransmitted to this RADIUS Dynamic authorization
server."
::= { radiusDynAuthServerEntry 17 }
radiusDynAuthClientCoAAcks OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS CoA-ACK packets
received from this Dynamic Authorization server"
::= { radiusDynAuthServerEntry 18 }
radiusDynAuthClientCoANaks OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS CoA-NAK packets
received from this Dynamic Authorization server."
::= { radiusDynAuthServerEntry 19 }
radiusDynAuthClientMalformedCoAResponses OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
De Cnodder, et al. Expires May 25, 2005 [Page 15]
Internet-Draft Dynamic Authorization Client MIB November 2004
STATUS current
DESCRIPTION
"The number of malformed RADIUS CoA-Response
packets received from this Dynamic Authorization
server. Bad authenticators and unknown types are
not included as malformed CoA-Responses."
::= { radiusDynAuthServerEntry 20 }
radiusDynAuthClientCoABadAuthenticators OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS CoA-Response packets
which contained invalid Signature attributes
received from this Dynamic Authorization server."
::= { radiusDynAuthServerEntry 21 }
radiusDynAuthClientCoAPendingRequests OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of RADIUS CoA-request packets destined for
this server that have not yet timed out or received a
response. This variable is incremented when an
CoA-Request is sent and decremented due to receipt of
a CoA-Ack, CoA -NAK or a timeout or a retransmission."
::= { radiusDynAuthServerEntry 22 }
radiusDynAuthClientCoATimeouts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of CoA request timeouts to this server.
After a timeout the client may retry to the same
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 a CoA-Request as well
as a timeout."
::= { radiusDynAuthServerEntry 23 }
radiusDynAuthClientCoAPacketsDropped OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
De Cnodder, et al. Expires May 25, 2005 [Page 16]
Internet-Draft Dynamic Authorization Client MIB November 2004
"The number of incoming CoA-Responses
from this Dynamic Authorization server silently
discarded for some reason other than malformed,
bad authenticators or unknown types."
::= { radiusDynAuthServerEntry 24 }
radiusDynAuthClientUnknownTypes OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of incoming packets of unknown types
which were received on the Dynamic Authorization port."
::= { radiusDynAuthServerEntry 25}
-- conformance information
radiusDynAuthClientMIBConformance
OBJECT IDENTIFIER ::= { radiusDynAuthClientMIB 2 }
radiusDynAuthClientMIBCompliances
OBJECT IDENTIFIER ::= { radiusDynAuthClientMIBConformance 1 }
radiusDynAuthClientMIBGroups
OBJECT IDENTIFIER ::= { radiusDynAuthClientMIBConformance 2 }
-- compliance statements
radiusDynAuthClientMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for entities implementing
the RADIUS Dynamic Authorization Client."
MODULE -- this module
MANDATORY-GROUPS { radiusDynAuthClientMIBGroup }
::= { radiusDynAuthClientMIBCompliances 1 }
-- units of conformance
radiusDynAuthClientMIBGroup OBJECT-GROUP
OBJECTS { radiusDynAuthClientInvalidServerAddresses,
radiusDynAuthClientIdentifier,
radiusDynAuthServerAddressType,
radiusDynAuthServerAddress,
radiusDynAuthServerClientPortNumber,
radiusDynAuthServerID,
radiusDynAuthClientRoundTripTime,
radiusDynAuthClientDisconRequests,
radiusDynAuthClientDisconRetransmissions,
radiusDynAuthClientDisconAcks,
De Cnodder, et al. Expires May 25, 2005 [Page 17]
Internet-Draft Dynamic Authorization Client MIB November 2004
radiusDynAuthClientDisconNaks,
radiusDynAuthClientMalformedDisconResponses,
radiusDynAuthClientDisconBadAuthenticators,
radiusDynAuthClientDisconPendingRequests,
radiusDynAuthClientDisconTimeouts,
radiusDynAuthClientDisconPacketsDropped,
radiusDynAuthClientCoARequests,
radiusDynAuthClientCoARetransmissions,
radiusDynAuthClientCoAAcks,
radiusDynAuthClientCoANaks,
radiusDynAuthClientMalformedCoAResponses,
radiusDynAuthClientCoABadAuthenticators,
radiusDynAuthClientCoAPendingRequests,
radiusDynAuthClientCoATimeouts,
radiusDynAuthClientCoAPacketsDropped,
radiusDynAuthClientUnknownTypes
}
STATUS current
DESCRIPTION
"The collection of objects providing management of
a RADIUS Dynamic Authorization Client."
::= { radiusDynAuthClientMIBGroups 1 }
END
De Cnodder, et al. Expires May 25, 2005 [Page 18]
Internet-Draft Dynamic Authorization Client MIB November 2004
7. Security Considerations
There are no management objects defined in this MIB module that have
a MAX-ACCESS clause of read-write and/or read-create. So, if this
MIB module is implemented correctly, then there is no risk that an
intruder can alter or create any management objects of this MIB
module via direct SNMP SET operations
Some of the readable objects in this MIB module (i.e., objects with a
MAX-ACCESS other than not-accessible) may be considered sensitive or
vulnerable in some network environments. It is thus important to
control even GET and/or NOTIFY access to these objects and possibly
to even encrypt the values of these objects when sending them over
the network via SNMP. These are the tables and objects and their
sensitivity/vulnerability:
radiusDynAuthServerAddress and radiusDynAuthServerAddressType
This can be used to determine the address of the DAS with which the
DAC is communicating. This information could be useful in mounting
an attack on the DAS.
radiusDynAuthServerID
This can be used to determine the Identifier of the DAS. This
information could be useful in impersonating the DAS.
radiusDynAuthServerClientPortNumber
This can be used to determine the port number on which the DAC is
sending. This information could be useful in mounting an attack on
the DAS.
The other readable objects are not really considered as being
sensitive or vulnerable. These objects are:
De Cnodder, et al. Expires May 25, 2005 [Page 19]
Internet-Draft Dynamic Authorization Client MIB November 2004
radiusDynAuthClientInvalidServerAddresses,
radiusDynAuthClientIdentifier,
radiusDynAuthClientRoundTripTime,
radiusDynAuthClientDisconRequests,
radiusDynAuthClientDisconRetransmissions,
radiusDynAuthClientDisconAcks,
radiusDynAuthClientDisconNaks,
radiusDynAuthClientMalformedDisconResponses,
radiusDynAuthClientDisconBadAuthenticators,
radiusDynAuthClientDisconPendingRequests,
radiusDynAuthClientDisconTimeouts,
radiusDynAuthClientDisconPacketsDropped,
radiusDynAuthClientCoARequests,
radiusDynAuthClientCoARetransmissions,
radiusDynAuthClientCoAAcks,
radiusDynAuthClientCoANaks,
radiusDynAuthClientMalformedCoAResponses,
radiusDynAuthClientCoABadAuthenticators,
radiusDynAuthClientCoAPendingRequests,
radiusDynAuthClientCoATimeouts,
radiusDynAuthClientCoAPacketsDropped, and
radiusDynAuthClientUnknownTypes.
SNMP versions prior to SNMPv3 did not include adequate security.
Even if the network itself is secure (for example by using IPSec),
even then, 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 module.
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.
De Cnodder, et al. Expires May 25, 2005 [Page 20]
Internet-Draft Dynamic Authorization Client MIB November 2004
8. Acknowledgements
This document reuses some of the work done in earlier RADIUS MIB
specifications [RFC2619] and [RFC2621].
The authors would also like to acknowledge the following people for
their contributions to this document: Anjaneyulu Pata.
De Cnodder, et al. Expires May 25, 2005 [Page 21]
Internet-Draft Dynamic Authorization Client MIB November 2004
9. References
9.1 Normative References
[DYNSERV] De Cnodder, S., Jonnala, N. and M. Chiba, "RADIUS Dynamic
Auhtorization Server MIB",
draft-decnodder-radext-dynauth-server-mib-01.txt, work in
progress, June 2004.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", RFC 2119, March 1997.
[RFC2578] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M. and S. Waldbusser, "Structure of Management
Information Version 2 (SMIv2)", STD 58, RFC 2578, April
1999.
[RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M. and S. Waldbusser, "Textual Conventions for
SMIv2", STD 58, RFC 2579, April 1999.
[RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M. and S. Waldbusser, "Conformance Statements for
SMIv2", STD 58, RFC 2580, April 1999.
[RFC2618] Aboba, B. and G. Zorn, "RADIUS Authentication Client MIB",
RFC 2618, June 1999.
[RFC2619] Zorn, G. and B. Aboba, "RADIUS Authentication Server MIB",
RFC 2619, June 1999.
[RFC2620] Aboba, B. and G. Zorn, "RADIUS Accounting Client MIB", RFC
2620, June 1999.
[RFC2621] Zorn, G. and B. Aboba, "RADIUS Accounting Server MIB", RFC
2621, June 1999.
[RFC3576] Chiba, M., Dommety, G., Eklund, M., Mitton, D. and B.
Aboba, "Dynamic Authorization Extensions to Remote
Authentication Dial In User Service (RADIUS)", RFC 3576,
July 2003.
9.2 Informative References
[RFC3410] Case, J., Mundy, R., Partain, D. and B. Stewart,
"Introduction and Applicability Statements for Internet
Standard Management Framework", RFC 3410, December 2002.
De Cnodder, et al. Expires May 25, 2005 [Page 22]
Internet-Draft Dynamic Authorization Client MIB November 2004
Authors' Addresses
Stefaan De Cnodder
Alcatel
Francis Wellesplein 1
B-2018 Antwerp
Belgium
Phone: +32 3 240 85 15
EMail: stefaan.de_cnodder@alcatel.be
Nagi Reddy Jonnala
Future Soft
480 - 481, Anna Salai
Nandanam, Chennai
India
EMail: nagi_reddy.jonnala@alcatel.be
Murtaza Chiba
Cisco Systems, Inc.
170 West Tasman Dr.
San Jose CA, 95134
Phone: +1 408 525 7198
EMail: mchiba@cisco.com
De Cnodder, et al. Expires May 25, 2005 [Page 23]
Internet-Draft Dynamic Authorization Client MIB November 2004
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 (2004). 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.
De Cnodder, et al. Expires May 25, 2005 [Page 24]
| PAFTECH AB 2003-2026 | 2026-04-23 19:36:16 |