radiusDynAuthClientDisconRetransmissions,
radiusDynAuthClientDisconAcks,
radiusDynAuthClientDisconNaks,
radiusDynAuthClientMalformedDisconResponses,
radiusDynAuthClientDisconBadAuthenticators,
radiusDynAuthClientDisconPendingRequests,
radiusDynAuthClientDisconTimeouts,
radiusDynAuthClientDisconPacketsDropped,
radiusDynAuthClientCoARequests,
radiusDynAuthClientCoARetransmissions,
radiusDynAuthClientCoAAcks,
radiusDynAuthClientCoANaks,
radiusDynAuthClientMalformedCoAResponses,
radiusDynAuthClientCoABadAuthenticators,
radiusDynAuthClientCoAPendingRequests,
radiusDynAuthClientCoATimeouts,
radiusDynAuthClientCoAPacketsDropped,
radiusDynAuthClientUnknownTypes,
radiusDynAuthClientCounterDiscontinuity
}
STATUS current
DESCRIPTION
"The collection of objects providing management of
a RADIUS Dynamic Authorization Client."
::= { radiusDynAuthClientMIBGroups 1 }
radiusDynAuthClientAuthOnlyGroup OBJECT-GROUP
OBJECTS { radiusDynAuthClientDisconAuthOnlyRequests,
radiusDynAuthClientDisconNakAuthOnlyRequest,
radiusDynAuthClientCoAAuthOnlyRequest,
radiusDynAuthClientCoANakAuthOnlyRequest
}
STATUS current
DESCRIPTION
"The collection of objects supporting the RADIUS
messages including Service-Type attribute with
value ’Authorize Only’."
::= { radiusDynAuthClientMIBGroups 2 }
radiusDynAuthClientNoSessGroup OBJECT-GROUP
OBJECTS { radiusDynAuthClientDisconNakSessNoContext,
radiusDynAuthClientCoANakSessNoContext
}
STATUS current
DESCRIPTION
"The collection of objects supporting the RADIUS
messages that are referring to non-existing sessions."
::= { radiusDynAuthClientMIBGroups 3 }
END
5. 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
These 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 destination port number to which
the DAC is sending. This information could be useful in mounting
an attack on the DAS.
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.
6. IANA Considerations
The IANA has assigned OID number 145 under mib-2.
7. Acknowledgements
The authors would also like to acknowledge the following people for
their comments on this document: Bernard Aboba, Alan DeKok, David
Nelson, Anjaneyulu Pata, Dan Romascanu, Juergen Schoenwaelder, Greg
Weber, Bert Wijnen, and Glen Zorn.
8. References
8.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2578] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Structure of Management Information Version 2 (SMIv2)",
STD 58, RFC 2578, April 1999.
[RFC2579] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"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.
[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.
[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.
[RFC4001] Daniele, M., Haberman, B., Routhier, S., and J.
Schoenwaelder, "Textual Conventions for Internet Network
Addresses", RFC 4001, February 2005.
8.2. Informative References
[RFC2865] Rigney, C., Willens, S., Rubens, A., and W. Simpson,
"Remote Authentication Dial In User Service (RADIUS)", RFC
2865, June 2000.
[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart,
"Introduction and Applicability Statements for Internet-
Standard Management Framework", RFC 3410, December 2002.
[RFC4669] Nelson, D., "RADIUS Authentication Server MIB for IPv6",
RFC 4669, August 2006.
[RFC4671] Nelson, D., "RADIUS Accounting Server MIB for IPv6", RFC
4671, August 2006.
[RFC4673] De Cnodder, S., Jonnala, N., and M. Chiba, "RADIUS Dynamic
Authorization Server MIB", RFC 4673, September 2006.
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
Cisco Systems, Inc.
Divyasree Chambers, B Wing, O’Shaugnessy Road
Bangalore-560027, India
Phone: +91 94487 60828
EMail: njonnala@cisco.com
Murtaza Chiba
Cisco Systems, Inc.
170 West Tasman Dr.
San Jose CA, 95134
Phone: +1 408 525 7198
EMail: mchiba@cisco.com
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