Network Working Group                                         N. Freed
Request for Comments: 2248                                    Innosoft
Obsoletes: 1565                                               S. Kille
Category: Standards Track                             ISODE Consortium
                                                         January 1998


                   Network Services Monitoring MIB


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 (1998).  All Rights Reserved.

1.  Introduction

  A networked application is a realization of some well defined service
  on one or more host computers that is accessible via some network,
  uses some network for its internal operations, or both.

  There are a wide range of networked applications for which it is
  appropriate to provide SNMP monitoring of their network usage.  This
  includes applications using both TCP/IP and OSI networking.  This
  document defines a MIB which contains the elements common to the
  monitoring of any network service application.  This information
  includes a table of all monitorable network service applications, a
  count of the associations (connections) to each application, and
  basic information about the parameters and status of each
  application-related association.

  This MIB may be used on its own for any application, and for most
  simple applications this will suffice.  This MIB is also designed to
  serve as a building block which can be used in conjunction with
  application-specific monitoring and management.  Two examples of this
  are MIBs defining additional variables for monitoring a Message
  Transfer Agent (MTA) service or a Directory Service Agent (DSA)
  service. It is expected that further MIBs of this nature will be
  specified.





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  This MIB does not attempt to provide facilities for management of the
  host or hosts the network service application runs on, nor does it
  provide facilities for monitoring applications that provide something
  other than a network service.  Host resource and general application
  monitoring is handled by the Host Resources MIB at present;
  development of an additional application MIB is currently underway in
  the IETF.

2.  Table of Contents

  1 Introduction ...............................................    1
  2 Table of Contents ..........................................    2
  3 The SNMPv2 Network Management Framework ....................    2
  3.1 Object Definitions .......................................    3
  4 Rationale for having a Network Services Monitoring MIB .....    3
  4.1 General Relationship to Other MIBs .......................    4
  4.2 Restriction of Scope .....................................    4
  4.3 Configuration Information ................................    4
  5 Application Objects ........................................    5
  6 Definitions ................................................    5
  7 Changes made since RFC 1565 ................................   16
  8 Acknowledgements ...........................................   16
  9 References .................................................   16
  10 Security Considerations ...................................   17
  11 Author and Chair Addresses ................................   18
  12 Full Copyright Statement ..................................   19

3.  The SNMPv2 Network Management Framework

  The SNMPv2 Network Management Framework consists of seven major
  components.  They are:

  o    RFC 1902 [1] which defines the SMI, the mechanisms used for
       describing and naming objects for the purpose of management.

  o    RFC 1903 [2] defines textual conventions for SNMPv2.

  o    RFC 1904 [3] defines conformance statements for SNMPv2.

  o    RFC 1905 [4] defines  transport mappings for SNMPv2.

  o    RFC 1906 [5] defines the protocol operations used for network
       access to managed objects.

  o    RFC 1907 [6] defines the Management Information Base for SNMPv2.

  o    RFC 1908 [7] specifies coexistance between SNMP and SNMPv2.




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  The Framework permits new objects to be defined for the purpose of
  experimentation and evaluation.

3.1.  Object Definitions

  Managed objects are accessed via a virtual information store, termed
  the Management Information Base or MIB. Objects in the MIB are
  defined using the subset of Abstract Syntax Notation One (ASN.1)
  defined in the SMI.  In particular, each object type is named by an
  OBJECT IDENTIFIER, an administratively assigned name. The object type
  together with an object instance serves to uniquely identify a
  specific instantiation of the object.  For human convenience, we
  often use a textual string, termed the descriptor, to refer to the
  object type.

4.  Rationale for having a Network Services Monitoring MIB

  Much effort has been expended in developing tools to manage lower
  layer network facilities.  However, relatively little work has been
  done on managing application layer entities.  It is neither efficient
  nor reasonable to manage all aspects of application layer entities
  using only lower layer information. Moreover, the difficulty of
  managing application entities in this way increases dramatically as
  application entities become more complex.

  This leads to a substantial need to monitor applications which
  provide network services, particularly distributed components such as
  MTAs and DSAs, by monitoring specific aspects of the application
  itself.  Reasons to monitor such components include but are not
  limited to measuring load, detecting broken connectivity, isolating
  system failures, and locating congestion.

  In order to manage network service applications effectively two
  requirements must be met:

   (1)   It must be possible to monitor a large number of components
         (typical for a large organization).

   (2)   Application monitoring must be integrated into general network
         management.

  This specification defines simple read-only access; this is
  sufficient to determine up/down status and provide an indication of a
  broad class of operational problems.







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4.1.  General Relationship to Other MIBs

  This MIB is intended to only provide facilities common to the
  monitoring of any network service application.  It does not provide
  all the facilities necessary to monitor any specific application.
  Each specific type of network service application is expected to have
  a MIB of its own that makes use of these common facilities.

4.2.  Restriction of Scope

  The framework provided here is very minimal; there is a lot more that
  could be done. For example:

   (1)   General network service application configuration monitoring
         and control.

   (2)   Detailed examination and modification of individual entries in
         service-specific request queues.

   (3)   Probing to determine the status of a specific request (e.g.
         the location of a mail message with a specific message-id).

   (4)   Requesting that certain actions be performed (e.g. forcing an
         immediate connection and transfer of pending messages to some
         specific system).

  All these capabilities are both impressive and useful.  However,
  these capabilities would require provisions for strict security
  checking.  These capabilities would also mandate a much more complex
  design, with many characteristics likely to be fairly
  implementation-specific.  As a result such facilities are likely to
  be both contentious and difficult to implement.

  This document religiously keeps things simple and focuses on the
  basic monitoring aspect of managing applications providing network
  services.  The goal here is to provide a framework which is simple,
  useful, and widely implementable.

4.3.  Configuration Information

  This MIB attempts to provide information about the operational
  aspects of an application. Further information about the actual
  configuration of a given application may be kept in other places; the
  applDirectoryName or applURL may be used to point to places where
  such information is kept.






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5.  Application Objects

  This MIB defines a set of general purpose attributes which would be
  appropriate for a range of applications that provide network
  services.  Both OSI and non-OSI services can be accomodated.
  Additional tables defined in extensions to this MIB provide
  attributes specific to specific network services.

  A table is defined which will have one row for each operational
  network service application on the system.  The only static
  information held on the application is its name.  All other static
  information should be obtained from various directory services.  The
  applDirectoryName is an external key, which allows an SNMP MIB entry
  to be cleanly related to the X.500 Directory.  In SNMP terms, the
  applications are grouped in a table called applTable, which is
  indexed by an integer key applIndex.

  The type of the application will be determined by one or both of:

   (1)   Additional MIB variables specific to the applications.

   (2)   An association to the application of a specific protocol.

6.  Definitions

   NETWORK-SERVICES-MIB DEFINITIONS ::= BEGIN

IMPORTS
   OBJECT-TYPE, Counter32, Gauge32, MODULE-IDENTITY, mib-2
     FROM SNMPv2-SMI
   DisplayString, TimeStamp, TEXTUAL-CONVENTION
     FROM SNMPv2-TC
   MODULE-COMPLIANCE, OBJECT-GROUP
     FROM SNMPv2-CONF;

application MODULE-IDENTITY
   LAST-UPDATED "9708170000Z"
   ORGANIZATION "IETF Mail and Directory Management Working Group"
   CONTACT-INFO
     "        Ned Freed

      Postal: Innosoft International, Inc.
              1050 Lakes Drive
              West Covina, CA 91790
              US

         Tel: +1 626 919 3600
         Fax: +1 626 919 3614



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      E-Mail: [email protected]"
   DESCRIPTION
     "The MIB module describing network service applications"
   REVISION "9311280000Z"
   DESCRIPTION
     "The original version of this MIB was published in RFC 1565"
   ::= {mib-2 27}

-- Textual conventions

-- DistinguishedName is used to refer to objects in the
-- directory.

DistinguishedName ::= TEXTUAL-CONVENTION
   STATUS current
   DESCRIPTION
       "A Distinguished Name represented in accordance with
        RFC 1779 [8]."
   SYNTAX DisplayString

-- Uniform Resource Locators are stored in URLStrings.

URLString ::= TEXTUAL-CONVENTION
   STATUS current
   DESCRIPTION
       "A Uniform Resource Locator represented in accordance
        with RFC 1738 [10]."
   SYNTAX DisplayString

-- The basic applTable contains a list of the application
-- entities.

applTable OBJECT-TYPE
   SYNTAX SEQUENCE OF ApplEntry
   MAX-ACCESS not-accessible
   STATUS current
   DESCRIPTION
       "The table holding objects which apply to all different
        kinds of applications providing network services.
        Each network service application capable of being
        monitored should have a single entry in this table."
   ::= {application 1}

applEntry OBJECT-TYPE
   SYNTAX ApplEntry
   MAX-ACCESS not-accessible
   STATUS current
   DESCRIPTION



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     "An entry associated with a single network service
      application."
   INDEX {applIndex}
   ::= {applTable 1}

ApplEntry ::= SEQUENCE {
   applIndex
       INTEGER,
   applName
       DisplayString,
   applDirectoryName
       DistinguishedName,
   applVersion
       DisplayString,
   applUptime
       TimeStamp,
   applOperStatus
       INTEGER,
   applLastChange
       TimeStamp,
   applInboundAssociations
       Gauge32,
   applOutboundAssociations
       Gauge32,
   applAccumulatedInboundAssociations
       Counter32,
   applAccumulatedOutboundAssociations
       Counter32,
   applLastInboundActivity
       TimeStamp,
   applLastOutboundActivity
       TimeStamp,
   applRejectedInboundAssociations
       Counter32,
   applFailedOutboundAssociations
       Counter32,
   applDescription
       DisplayString,
   applURL
       URLString
}

applIndex OBJECT-TYPE
   SYNTAX INTEGER (1..2147483647)
   MAX-ACCESS not-accessible
   STATUS current
   DESCRIPTION
     "An index to uniquely identify the network service



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      application. This attribute is the index used for
      lexicographic ordering of the table."

   ::= {applEntry 1}

applName OBJECT-TYPE
   SYNTAX DisplayString
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The name the network service application chooses to be
      known by."
   ::= {applEntry 2}

applDirectoryName OBJECT-TYPE
   SYNTAX DistinguishedName
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The Distinguished Name of the directory entry where
      static information about this application is stored.
      An empty string indicates that no information about
      the application is available in the directory."
   ::= {applEntry 3}

applVersion OBJECT-TYPE
   SYNTAX DisplayString
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The version of network service application software.
      This field is usually defined by the vendor of the
      network service application software."
   ::= {applEntry 4}

applUptime OBJECT-TYPE
   SYNTAX TimeStamp
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The value of sysUpTime at the time the network service
      application was last initialized.  If the application was
      last initialized prior to the last initialization of the
      network management subsystem, then this object contains
      a zero value."
   ::= {applEntry 5}





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applOperStatus OBJECT-TYPE
   SYNTAX INTEGER {
     up(1),
     down(2),
     halted(3),
     congested(4),
     restarting(5),
     quiescing(6)
   }
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "Indicates the operational status of the network service
      application. 'down' indicates that the network service is
      not available. 'up' indicates that the network service
      is operational and available.  'halted' indicates that the
      service is operational but not available.  'congested'
      indicates that the service is operational but no additional
      inbound associations can be accomodated.  'restarting'
      indicates that the service is currently unavailable but is
      in the process of restarting and will be available soon.
      'quiescing' indicates that service is currently operational
      but is in the process of shutting down. Additional inbound
      associations may be rejected by applications in the
      'quiescing' state."
   ::= {applEntry 6}

applLastChange OBJECT-TYPE
   SYNTAX TimeStamp
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The value of sysUpTime at the time the network service
      application entered its current operational state.  If
      the current state was entered prior to the last
      initialization of the local network management subsystem,
      then this object contains a zero value."
   ::= {applEntry 7}

applInboundAssociations OBJECT-TYPE
   SYNTAX Gauge32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The number of current associations to the network service
      application, where it is the responder.  An inbound
      assocation occurs when a another application successfully
      connects to this one."



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   ::= {applEntry 8}

applOutboundAssociations OBJECT-TYPE
   SYNTAX Gauge32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The number of current associations to the network service
      application, where it is the initiator.  An outbound
      association occurs when this application successfully
      connects to another one."
   ::= {applEntry 9}

applAccumulatedInboundAssociations OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total number of associations to the application entity
      since application initialization, where it was the responder."
   ::= {applEntry 10}

applAccumulatedOutboundAssociations OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total number of associations to the application entity
      since application initialization, where it was the initiator."
   ::= {applEntry 11}

applLastInboundActivity OBJECT-TYPE
   SYNTAX TimeStamp
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The value of sysUpTime at the time this application last
      had an inbound association.  If the last association
      occurred prior to the last initialization of the network
      subsystem, then this object contains a zero value."
   ::= {applEntry 12}

applLastOutboundActivity OBJECT-TYPE
   SYNTAX TimeStamp
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The value of sysUpTime at the time this application last



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      had an outbound association.  If the last association
      occurred prior to the last initialization of the network
      subsystem, then this object contains a zero value."
   ::= {applEntry 13}

applRejectedInboundAssociations OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total number of inbound associations the application
      entity has rejected, since application initialization.
      Rejected associations are not counted in the accumulated
      association totals.  Note that this only counts
      associations the application entity has rejected itself;
      it does not count rejections that occur at lower layers
      of the network.  Thus, this counter may not reflect the
      true number of failed inbound associations."
   ::= {applEntry 14}

applFailedOutboundAssociations OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total number associations where the application entity
      is initiator and association establishment has failed,
      since application initialization.  Failed associations are
      not counted in the accumulated association totals."
   ::= {applEntry 15}

applDescription OBJECT-TYPE
   SYNTAX DisplayString
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "A text description of the application.  This information
      is intended to identify and briefly describe the
      application in a status display."
   ::= {applEntry 16}

applURL OBJECT-TYPE
   SYNTAX URLString
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "A URL pointing to a description of the application.
      This information is intended to identify and describe



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      the application in a status display."
   ::= {applEntry 17}


-- The assocTable augments the information in the applTable
-- with information about associations.  Note that two levels
-- of compliance are specified below, depending on whether
-- association monitoring is mandated.

assocTable OBJECT-TYPE
   SYNTAX SEQUENCE OF AssocEntry
   MAX-ACCESS not-accessible
   STATUS current
   DESCRIPTION
       "The table holding a set of all active application
        associations."
   ::= {application 2}

assocEntry OBJECT-TYPE
   SYNTAX AssocEntry
   MAX-ACCESS not-accessible
   STATUS current
   DESCRIPTION
     "An entry associated with an association for a network
      service application."
   INDEX {applIndex, assocIndex}
   ::= {assocTable 1}

AssocEntry ::= SEQUENCE {
   assocIndex
       INTEGER,
   assocRemoteApplication
       DisplayString,
   assocApplicationProtocol
       OBJECT IDENTIFIER,
   assocApplicationType
       INTEGER,
   assocDuration
       TimeStamp
}

assocIndex OBJECT-TYPE
   SYNTAX INTEGER (1..2147483647)
   MAX-ACCESS not-accessible
   STATUS current
   DESCRIPTION
     "An index to uniquely identify each association for a network
      service application.  This attribute is the index that is



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      used for lexicographic ordering of the table.  Note that the
      table is also indexed by the applIndex."
   ::= {assocEntry 1}

assocRemoteApplication OBJECT-TYPE
   SYNTAX DisplayString
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The name of the system running remote network service
      application.  For an IP-based application this should be
      either a domain name or IP address.  For an OSI application
      it should be the string encoded distinguished name of the
      managed object.  For X.400(1984) MTAs which do not have a
      Distinguished Name, the RFC 1327 [9] syntax
      'mta in globalid' should be used. Note, however, that not
      all connections an MTA are necessarily to another MTA."
   ::= {assocEntry 2}

assocApplicationProtocol OBJECT-TYPE
   SYNTAX OBJECT IDENTIFIER
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "An identification of the protocol being used for the
      application.  For an OSI Application, this will be the
      Application Context.  For Internet applications, the IANA
      maintains a registry of the OIDs which correspond to
      well-known applications.  If the application protocol is
      not listed in the registry, an OID value of the form
      {applTCPProtoID port} or {applUDProtoID port} are used for
      TCP-based and UDP-based protocols, respectively. In either
      case 'port' corresponds to the primary port number being
      used by the protocol."
   ::= {assocEntry 3}

assocApplicationType OBJECT-TYPE
   SYNTAX INTEGER {
       ua-initiator(1),
       ua-responder(2),
       peer-initiator(3),
       peer-responder(4)}
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "This indicates whether the remote application is some type of
      client making use of this network service (e.g. a Mail User
      Agent) or a server acting as a peer. Also indicated is whether



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      the remote end initiated an incoming connection to the network
      service or responded to an outgoing connection made by the
      local application.  MTAs and messaging gateways are
      considered to be peers for the purposes of this variable."
   ::= {assocEntry 4}

assocDuration OBJECT-TYPE
   SYNTAX TimeStamp
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The value of sysUpTime at the time this association was
      started.  If this association started prior to the last
      initialization of the network subsystem, then this
      object contains a zero value."
   ::= {assocEntry 5}


-- Conformance information

applConformance OBJECT IDENTIFIER ::= {application 3}

applGroups      OBJECT IDENTIFIER ::= {applConformance 1}
applCompliances OBJECT IDENTIFIER ::= {applConformance 2}


-- Compliance statements

applCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
     "The compliance statement for SNMPv2 entities
      which implement the Network Services Monitoring MIB
      for basic monitoring of network service applications."
   MODULE  -- this module
     MANDATORY-GROUPS {applGroup}
   ::= {applCompliances 1}

assocCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
     "The compliance statement for SNMPv2 entities which
      implement the Network Services Monitoring MIB for basic
      monitoring of network service applications and their
      associations."
   MODULE  -- this module
     MANDATORY-GROUPS {applGroup, assocGroup}
   ::= {applCompliances 2}



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-- Units of conformance

applGroup OBJECT-GROUP
   OBJECTS {
     applName, applVersion, applUptime, applOperStatus,
     applLastChange, applInboundAssociations,
     applOutboundAssociations, applAccumulatedInboundAssociations,
     applAccumulatedOutboundAssociations, applLastInboundActivity,
     applLastOutboundActivity, applRejectedInboundAssociations,
     applFailedOutboundAssociations, applDescription, applURL}
   STATUS current
   DESCRIPTION
     "A collection of objects providing basic monitoring of
      network service applications."
   ::= {applGroups 1}


assocGroup OBJECT-GROUP
   OBJECTS {
     assocRemoteApplication, assocApplicationProtocol,
     assocApplicationType, assocDuration}
   STATUS current
   DESCRIPTION
     "A collection of objects providing basic monitoring of
      network service applications' associations."
   ::= {applGroups 2}


-- OIDs of the form {applTCPProtoID port} are intended to be used
-- for TCP-based protocols that don't have OIDs assigned by other
-- means. {applUDPProtoID port} serves the same purpose for
-- UDP-based protocols. In either case 'port' corresponds to
-- the primary port number being used by the protocol. For example,
-- assuming no other OID is assigned for SMTP, an OID of
-- {applTCPProtoID 25} could be used, since SMTP is a TCP-based
-- protocol that uses port 25 as its primary port.

applTCPProtoID OBJECT IDENTIFIER ::= {application 4}
applUDPProtoID OBJECT IDENTIFIER ::= {application 5}

END










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7.  Changes made since RFC 1565

  The only changes made to this document since it was issued as RFC
  1565 [11] are the following:

   (1)   applDescription and applURL fields have been added.  These
         fields are intended to identify and describe the application.

   (2)   A number of DESCRIPTION fields have been reworded, hopefully
         making them clearer.

   (3)   The new "quiescing" state has been added to applOperStatus.

   (4)   The prose about "dynamic single threaded processes" has been
         removed -- it was simply too confusing.

   (5)   Various RFC references have been updated to refer to more
         recent versions.

   (6)   The MIB has been renamed from APPLICATION-MIB to NETWORK-
         SERVICES-MIB.  This was done because an application MIB is now
         under development within the IETF that provides very different
         functionality from this MIB.

8.  Acknowledgements

  This document is a product of the Mail and Directory Management
  (MADMAN) Working Group. It is based on an earlier MIB designed by S.
  Kille, T.  Lenggenhager, D. Partain, and W. Yeong.  The Electronic
  Mail Association's TSC committee was instrumental in  providing
  feedback on and suggesting enhancements to RFC 1565 [11] that have
  led to the present document.

9.  References

  [1]  SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
       S. Waldbusser, "Structure of Management Information for Version
       2 of the Simple Network Management Protocol (SNMPv2)", RFC 1902,
       January 1996.

  [2]  SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
       S. Waldbusser, "Textual Conventions for Version 2 of the Simple
       Network Management Protocol (SNMPv2)", RFC 1903, January 1996.

  [3]  SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
       S. Waldbusser, "Conformance Statements for Version 2 of the
       Simple Network Management Protocol (SNMPv2)", RFC 1904, January
       1996.



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RFC 2248                  Network Services MIB              January 1998


  [4]  SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
       S. Waldbusser, "Protocol Operations for Version 2 of the Simple
       Network Management Protocol (SNMPv2)", RFC 1905, January 1996.

  [5]  SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
       S. Waldbusser, "Transport Mappings for Version 2 of the Simple
       Network Management Protocol (SNMPv2)", RFC 1906, January 1996.

  [6]  SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
       S. Waldbusser, "Management Information Base for Version 2 of the
       Simple Network Management Protocol (SNMPv2)", RFC 1907, January
       1996.

  [7]  SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
       S. Waldbusser, "Coexistence between Version 1 and Version 2 of
       the Internet-standard Network Management Framework", RFC 1908,
       January 1996.

  [8]  Kille, S., "A String Representation of Distinguished Names", RFC
       1779, March 1995.

  [9]  Kille, S., "Mapping between X.400(1988) / ISO 10021 and RFC
       822", RFC 1327, May 1992.

  [10] Berners-Lee, T., Masinter, L. and M. McCahill, Uniform Resource
       Locators (URL)", RFC 1738, December 1994.

  [11] Freed, N., and S. Kille, "Network Services Monitoring MIB", RFC
       1565, January 1994.

10.  Security Considerations

  This MIB does not offer write access, and as such cannot be used to
  actively attack a system. However, this MIB does provide passive
  information about the existance, type, and configuration of
  applications on a given host that could potentially indicate some
  sort of vulnerability. Finally, the information MIB provides about
  network usage could be used to analyze network traffic patterns.













Freed & Kille               Standards Track                    [Page 17]

RFC 2248                  Network Services MIB              January 1998


11.  Author and Chair Addresses

  Ned Freed
  Innosoft International, Inc.
  1050 Lakes Drive
  West Covina, CA 91790
  USA

  Phone: +1 626 919 3600
  Fax: +1 626 919 3614
  EMail: [email protected]


  Steve Kille, MADMAN WG Chair
  ISODE Consortium
  The Dome, The Square
  Richmond TW9 1DT
  UK

  Phone: +44 181 332 9091
  EMail: [email protected]






























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RFC 2248                  Network Services MIB              January 1998


12.  Full Copyright Statement

  Copyright (C) The Internet Society (1998). All Rights Reserved.

  This document and translations of it may be copied and furnished  to
  others, and derivative works that comment on or otherwise  explain it
  or assist in its implementation may be prepared, copied,  published
  and distributed, in whole or in part, without  restriction of any
  kind, provided that the above copyright notice  and this paragraph
  are included on all such copies and derivative  works.  However, this
  document itself may not be modified in any  way, such as by removing
  the copyright notice or references to the  Internet Society or other
  Internet organizations, except as needed for the purpose of
  developing Internet standards in which case the  procedures for
  copyrights defined in the Internet Standards  process must be
  followed, or as required to translate it into languages other than
  English.

  The limited permissions granted above are perpetual and will not be
  revoked by the Internet Society or its successors or assigns.

  This document and the information contained herein is provided on  an
  "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET  ENGINEERING
  TASK FORCE DISCLAIMS 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.
























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