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Network Working Group                                            S. Hyun
Internet-Draft                                         Chosun University
Intended status: Standards Track                                J. Jeong
Expires: January 3, 2019                                          T. Roh
                                                                   S. Wi
                                                 Sungkyunkwan University
                                                                 J. Park
                                                                    ETRI
                                                            July 2, 2018


              I2NSF Registration Interface YANG Data Model
             draft-hyun-i2nsf-registration-interface-dm-04

Abstract

   This document describes an YANG data model for I2NSF registration
   interface between Security Controller and Developer's Management
   System.  The data model is required for NSF instance registration and
   dynamic life cycle management of NSF instances.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   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."

   This Internet-Draft will expire on January 3, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect



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   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   2
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Tree Diagrams . . . . . . . . . . . . . . . . . . . . . .   3
   4.  High-Level YANG . . . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  Registration Interface  . . . . . . . . . . . . . . . . .   4
     4.2.  Registration Request  . . . . . . . . . . . . . . . . . .   4
     4.3.  Instance Management Request . . . . . . . . . . . . . . .   5
     4.4.  NSF Capability Information  . . . . . . . . . . . . . . .   5
     4.5.  NSF Access Information  . . . . . . . . . . . . . . . . .   6
     4.6.  NSF Performance Capability  . . . . . . . . . . . . . . .   6
     4.7.  Role-Based ACL(Access Control List) . . . . . . . . . . .   6
   5.  YANG Modules  . . . . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  XML Example of Registration Interface Data Model  . . . .  12
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  14
   Appendix A.  Changes from draft-hyun-i2nsf-registration-
                interface-dm-03  . . . . . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   This document provides a YANG [RFC6020] data model that defines the
   required data for the registration interface between Security
   Controller and Developer's Management System to dynamically manage a
   pool of NSF instances.  This document defines a YANG data model based
   on the [i2nsf-reg-inf-im].  The terms used in this document are
   defined in [i2nsf-terminology].

2.  Requirements Language

   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].







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3.  Terminology

   This document uses the terminology described in [i2nsf-terminology],
   [capability-im], [RFC8329], [nsf-triggered-steering],
   [supa-policy-data-model], and [supa-policy-info-model].

   o  Network Security Function (NSF): A function that is responsible
      for specific treatment of received packets.  A Network Security
      Function can act at various layers of a protocol stack (e.g., at
      the network layer or other OSI layers).  Sample Network Security
      Service Functions are as follows: Firewall, Intrusion Prevention/
      Detection System (IPS/IDS), Deep Packet Inspection (DPI),
      Application Visibility and Control (AVC), network virus and
      malware scanning, sandbox, Data Loss Prevention (DLP), Distributed
      Denial of Service (DDoS) mitigation and TLS proxy.
      [nsf-triggered-steering]

   o  Advanced Inspection/Action: As like the I2NSF information model
      for NSF facing interface [capability-im], Advanced Inspection/
      Action means that a security function calls another security
      function for further inspection based on its own inspection
      result. [nsf-triggered-steering]

   o  Network Security Function Profile (NSF Capability Information):
      NSF Capability Information specifies the inspection capabilities
      of the associated NSF instance.  Each NSF instance has its own NSF
      Capability Information to specify the type of security service it
      provides and its resource capacity etc. [nsf-triggered-steering]

   o  Data Model: A data model is a representation of concepts of
      interest to an environment in a form that is dependent on data
      repository, data definition language, query language,
      implementation language, and protocol. [supa-policy-info-model]

   o  Information Model: An information model is a representation of
      concepts of interest to an environment in a form that is
      independent of data repository, data definition language, query
      language, implementation language, and protocol.
      [supa-policy-info-model]

3.1.  Tree Diagrams

   A simplified graphical representation of the data model is used in
   this document.  The meaning of the symbols in these diagrams
   [i2rs-rib-data-model] is as follows:

      Brackets "[" and "]" enclose list keys.




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      Abbreviations before data node names: "rw" means configuration
      (read-write) and "ro" state data (read-only).

      Symbols after data node names: "?" means an optional node and "*"
      denotes a "list" and "leaf-list".

      Parentheses enclose choice and case nodes, and case nodes are also
      marked with a colon (":").

      Ellipsis ("...") stands for contents of subtrees that are not
      shown.

4.  High-Level YANG

   This section provides an overview of the high level YANG.

4.1.  Registration Interface

   module : ietf-i2nsf-regs-interface-model
     +--rw regs-req
     |  uses i2nsf-regs-req
     +--rw instance-mgnt-req
     |  uses i2nsf-instance-mgnt-req


         Figure 1: High-Level YANG of I2NSF Registration Interface

   Each of these sections mirror sections of [i2nsf-reg-inf-im].

4.2.  Registration Request

   This section expands the i2nsf-regs-req in Figure 1.

   Registration Request
     +--rw i2nsf-regs-req
       +--rw nsf-capability-information
       |  uses i2nsf-nsf-capability-information
       +--rw nsf-access-info
       |  uses i2nsf-nsf-access-info


          Figure 2: High-Level YANG of I2NSF Registration Request

   Registration Request contains the capability information of newly
   created NSF to notify its capability to Security Controller.  The
   request also contains Network Access Information so that the Security
   Controller can access the NSF.




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4.3.  Instance Management Request

   This section expands the i2nsf-instance-mgnt-req in Figure 1.

   Instance Management Request
     +--rw i2nsf-instance-mgnt-req
       +--rw req-level uint16
       +--rw req-id uint64
       +--rw (req-type)?
         +--rw (instanciation-request)
           +--rw in-nsf-capability-information
           |  uses i2nsf-nsf-capability-information
         +--rw (deinstanciation-request)
           +--rw de-nsf-access-info
           |  uses i2nsf-nsf-access-info
         +--rw (reinstanciation-request)
           +--rw re-nsf-capability-information
           |  uses i2nsf-nsf-capability-information


         Figure 3: High-Level YANG of I2NSF Instance Mgnt Request

   Instance management request consists of two types: instanciation-
   request, deinstanciation-request, and reinstanciation-request.  The
   instanciation-request is used to request generation of a new NSF
   instance with NSF Capability Information which specifies required NSF
   capability information.  The deinstanciation-request is used to
   remove an existing NSF with NSF Access Information.  The
   reinstanciation nsf request is used to updating a existing NSf
   information with NSF capabilities.

4.4.  NSF Capability Information

   This section expands the i2nsf-nsf-capability-information in Figure 2
   and Figure 3.

   NSF Capability Information
     +--rw i2nsf-nsf-capability-information
       +--rw i2nsf-capability
       |  uses ietf-i2nsf-capability
       +--rw performance-capability
       |  uses i2nsf-nsf-performance-caps

       Figure 4: High-Level YANG of I2NSF NSF Capability Information

   In Figure 4, ietf-i2nsf-capability refers module ietf-i2nsf-
   capability in [i2nsf-capability-dm].  We add the performance




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   capability because it is absent in [i2nsf-capability-dm] and
   [netmod-acl-model]

4.5.  NSF Access Information

   This section expands the i2nsf-nsf-access-info in Figure 2 and
   Figure 3.

   NSF Access Information
     +--rw i2nsf-nsf-access-info
       +--rw nsf-address  inet:ipv4-address
       +--rw nsf-port-address inet:port-number

        Figure 5: High-Level YANG of I2NSF NSF Access Informantion

   This information is used by other components to access an NSF.

4.6.  NSF Performance Capability

   This section expands the i2nsf-nsf-performance-caps in Figure 4.

   NSF Performance Capability
     +--rw i2nsf-nsf-performance-caps
      +--rw processing
      |   +--rw processing-average uint16
      |   +--rw processing-peak uint16
      +--rw bandwidth
      |   +--rw outbound
      |   |  +--rw outbound-average uint16
      |   |  +--rw outbound-peak uint16
      |   +--rw inbound
      |   |  +--rw inbound-average uint16
      |   |  +--rw inbound-peak uint16


       Figure 6: High-Level YANG of I2NSF NSF Performance Capability

   When the Security Controller requests the Developer Management System
   to create a new NSF instance, the performance capability is used to
   specify the performance requirements of the new instance.

4.7.  Role-Based ACL(Access Control List)

   This section expands the ietf-netmod-acl-model in [netmod-acl-model].







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   Role-Based ACL
     +--rw role-based-acl
          uses ietf-netmod-acl-model

                         Figure 7: Role-Based ACL

   In [netmod-acl-model], ietf-netmod-acl-model refers module ietf-
   netmod-acl-model in [netmod-acl-model].  We add the role-based ACL
   because it is absent in [i2nsf-capability-dm].

5.  YANG Modules

   This section introduces a YANG module for the information model of
   the required data for the registration interface between Security
   Controller and Developer's Management System, as defined in the
   [i2nsf-reg-inf-im].

   <CODE BEGINS> file "ietf-i2nsf-regs-interface@2018-07-02.yang"
           module ietf-i2nsf-regs-interface {
         namespace
          "urn:ietf:params:xml:ns:yang:ietf-i2nsf-regs-interface";
         prefix
           regs-interface;
         import ietf-inet-types{
          prefix inet;
         }

         organization
           "IETF I2NSF (Interface to Network Security Functions)
           Working Group";

         contact
          "WG Web: <http://tools.ietf.org/wg/i2nsf>
          WG List: <mailto:i2nsf@ietf.org>

          WG Chair: Adrian Farrel
          <mailto:Adrain@olddog.co.uk>

          WG Chair: Linda Dunbar
          <mailto:Linda.duhbar@huawei.com>

          Editor: Sangwon Hyun
          <mailto:swhyun77@skku.edu>

          Editor: Taekyun Roh
          <mailto:tkroh0198@skku.edu>

          Editor: Sarang Wi



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          <mailto:dnl9795@skku.edu>

          Editor: Jaehoon Paul Jeong
          <mailto:pauljeong@skku.edu>

          Editor: Jung-Soo Park
          <mailto:pjs@etri.re.kr>";

         description
           "It defines a YANG data module for Registration Interface.";
         revision "2018-07-02"{
           description "The second revision";
           reference
           "draft-hares-i2nsf-capability-data-model-07
           draft-hyun-i2nsf-registration-interface-im-05";
         }
       list interface-container{
                   key "interface-name";
           description
                   "i2nsf-reg-interface-container";
                   leaf interface-name{
                     type string;
                     description
                     "interface name";
                   }
                   container i2nsf-regs-req {
            description
            "The capability information of newly
            created NSF to notify its
            capability to Security Controller";
            container nsf-capability-information {
             description
             "nsf-capability-information";
             uses i2nsf-nsf-capability-information;
            }
           container nsf-access-info {
            description
            "nsf-access-info";
            uses i2nsf-nsf-access-info;
           }
               container ietf-netmod-acl-model{
                description
                "netmod-acl-model";
                uses ietf-netmod-acl-model;
               }
          }
               container i2nsf-instance-mgnt-req {
            description



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            "Required information for instanciation-request,
            deinstanciation-request and reinstanciation-request";
            leaf req-level {
             type uint16;
             description
             "req-level";
           }
            leaf req-id {
             type uint64;
             mandatory true;
             description
             "req-id";
            }
            choice req-type {
             description
             "req-type";
             case instanciation-request {
              description
              "instanciation-request";
             container in-nsf-capability-information {
               description
               "nsf-capability-information";
               uses i2nsf-nsf-capability-information;
              }
             }
             case deinstanciation-request {
              description
              "deinstanciation-request";
              container de-nsf-access-info {
                description
                "nsf-access-info";
                uses i2nsf-nsf-access-info;
               }
             }
             case reinstanciation-request {
              description
               "reinstanciation nsf's information";
               container re-nsf-capability-information {
                description
                "nsf-capability-information";
                uses i2nsf-nsf-capability-information;
               }
             }
            }
           }
           }
       grouping i2nsf-nsf-performance-caps {
           description



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           "NSF performance capailities";
           container processing{
             description
             "processing info";
             leaf processing-average{
              type uint16;
              description
              "processing-average";
             }
             leaf processing-peak{
              type uint16;
              description
              "processing peak";
             }
           }
           container bandwidth{
             description
             "bandwidth info";
             container inbound{
              description
              "inbound";
              leaf inbound-average{
               type uint16;
               description
               "inbound-average";
              }
              leaf inbound-peak{
               type uint16;
               description
               "inbound-peak";
              }
             }
             container outbound{
              description
              "outbound";
              leaf outbound-average{
               type uint16;
               description
               "outbound-average";
              }
              leaf outbound-peak{
               type uint16;
               description
               "outbound-peak";
              }
             }
           }
       }



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       grouping i2nsf-nsf-capability-information {
         description
         "Detail information of an NSF";
         container performance-capability {
          uses i2nsf-nsf-performance-caps;
          description
          "performance-capability";
         }
         container i2nsf-capability {
          description
          "It refers draft-hares-i2nsf-capability-data-model-07.txt
          later";
         }
       }
       grouping ietf-netmod-acl-model {
         description
         "Detail information";
         container role-based-acl {
          description
          "It refers draft-ietf-netmod-acl-model-15.txt
          later";
         }
       }
       grouping i2nsf-nsf-access-info {
         description
         "NSF access information";
         leaf nsf-address {
          type inet:ipv4-address;
          mandatory true;
          description
          "nsf-address";
         }
         leaf nsf-port-address {
          type inet:port-number;
          description
          "nsf-port-address";
         }
       }
   }

   <CODE ENDS>

           Figure 8: Data Model of I2NSF Registration Interface








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5.1.  XML Example of Registration Interface Data Model

   Requirement: Registering the IDS NSF with VoIP/VoLTE security
   capability using Registration interface.

   Here is the configuration xml for this Registration Interface:

   <?xml version="1.0" encoding="UTF-8"?>
   <rpc xmlns="urn:ietf:params:netconf:base:1.0" message-id="1">
     <edit-config>
       <target>
         <running/>
       </target>
       <config>
       <i2nsf-regs-req>
         <i2nsf-nsf-capability-information>
           <ietf-i2nsf-capability>
             <nsf-capabilities>
              <nsf-capabilities-id>1</nsf-capabilities-id>
               <con-sec-control-capabilities>
                <content-security-control>
                 <ids>
                  <ids-support>true</ids-support>
                  <ids-fcn nc:operation="create">
                   <ids-fcn-name>ids-service</ids-fcn-name>
                  </ids-fcn>
                 </ids>
                 <voip-volte>
                  <voip-volte-support>true</voip-volte-support>
                  <voip-volte-fcn nc:operation="create">
                   <voip-volte-fcn-name>
                    ips-service
                   </voip-volte-fcn-name>
                  </voip-volte-fcn>
                 </voip-volte>
                </content-security-control>
              </con-sec-control-capabilities>
             </nsf-capabilities>
           </ietf-i2nsf-capability>
           <i2nsf-nsf-performance-caps>
             <processing>
              <processing-average>1000</processing-average>
              <processing-peak>5000</processing-peak>
             </processing>
             <bandwidth>
              <outbound>
               <outbound-average>1000</outbound-average>
               <outbound-peak>5000</outbound-peak>



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              </outbound>
              <inbound>
               <inbound-average>1000</inbound-average>
               <inbound-peak>5000</inbound-peak>
              </inbound>
             </bandwidth>
           </i2nsf-nsf-performance-caps>
         </i2nsf-nsf-capability-information>
         <nsf-access-info>
          <nsf-address>10.0.0.1</nsf-address>
          <nsf-port-address>145</nsf-port-address>
         </nsf-access-info>
       </i2nsf-regs-req>
       </config>
     </edit-config>
   </rpc>

                 Figure 9: Registration Interface example

6.  Security Considerations

   The information model of the registration interface is based on the
   I2NSF framework without any architectural changes.  Thus, this
   document shares the security considerations of the I2NSF framwork
   architecture that are specified in [RFC8329] for the purpose of
   achieving secure communication among components in the proposed
   architecture.

7.  Acknowledgments

   This work was supported by Institute for Information & communications
   Technology Promotion(IITP) grant funded by the Korea government(MSIP)
   (No.R-20160222-002755, Cloud based Security Intelligence Technology
   Development for the Customized Security Service Provisioning).

8.  References

8.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs toIndicate
              Requirement Levels", RFC 2119, March 1997.

   [RFC6020]  Bjorklund, M., "YANG - A Data Modeling Language for the
              Network Configuration Protocol (NETCONF)", RFC 6020,
              October 2010.






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8.2.  Informative References

   [capability-im]
              Xia, L., Strassner, J., Basile, C., and D. Lopez,
              "Information Model of NSFs Capabilities", draft-i2nsf-
              capability-00 (work in progress), September 2017.

   [i2nsf-capability-dm]
              Hares, S., Jeong, J., Kim, J., Moskowitz, R., and Q. Lin,
              "I2NSF Capability YANG Data Model", draft-hares-i2nsf-
              capability-data-model-07 (work in progress), March 2018.

   [i2nsf-reg-inf-im]
              Hyun, S., Jeong, J., Roh, T., Wi, S., and J. Park, "I2NSF
              Registration Interface Information Model", draft-hyun-
              i2nsf-registration-interface-im-04 (work in progress),
              October 2017.

   [i2nsf-terminology]
              Hares, S., Strassner, J., Lopez, D., Xia, L., and H.
              Birkholz, "Interface to Network Security Functions (I2NSF)
              Terminology", draft-ietf-i2nsf-terminology-05 (work in
              progress), January 2018.

   [i2rs-rib-data-model]
              Wang, L., Chen, M., Dass, A., Ananthakrishnan, H., Kini,
              S., and N. Bahadur, "A YANG Data Model for Routing
              Information Base (RIB)", draft-ietf-i2rs-rib-data-model-10
              (work in progress), February 2018.

   [netmod-acl-model]
              Jethanandani, M., Huang, L., Agarwal, S., and D. Blair,
              "Network Access Control List (ACL) YANG Data Model",
              draft-ietf-netmod-acl-model-16 (work in progress),
              February 2018.

   [nsf-triggered-steering]
              Hyun, S., Jeong, J., Park, J., and S. Hares, "Service
              Function Chaining-Enabled I2NSF Architecture", draft-hyun-
              i2nsf-nsf-triggered-steering-05 (work in progress), March
              2018.

   [RFC8329]  Lopez, D., Lopez, E., Dunbar, L., Strassner, J., and R.
              Kumar, "Framework for Interface to Network Security
              Functions", RFC 8329, February 2018.






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   [supa-policy-data-model]
              Halpern, J., Strassner, J., and S. van der Meer, "Generic
              Policy Data Model for Simplified Use of Policy
              Abstractions (SUPA)", draft-ietf-supa-generic-policy-data-
              model-04 (work in progress), June 2017.

   [supa-policy-info-model]
              Strassner, J., Halpern, J., and S. van der Meer, "Generic
              Policy Information Model for Simplified Use of Policy
              Abstractions (SUPA)", draft-ietf-supa-generic-policy-info-
              model-03 (work in progress), May 2017.








































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Appendix A.  Changes from draft-hyun-i2nsf-registration-interface-dm-03

   The following changes are made from draft-hyun-i2nsf-registration-
   interface-dm-03:

   o  We added Re-instantiation item.

   o  The references were updated to reflect the latest documents.

Authors' Addresses

   Sangwon Hyun
   Department of Computer Engineering
   Chosun University
   309, Pilmun-daero, Dong-gu
   Gwangju, Jeollanam-do  61452
   Republic of Korea

   EMail: shyun@chosun.ac.kr


   Jaehoon Paul Jeong
   Department of Software
   Sungkyunkwan University
   2066 Seobu-Ro, Jangan-Gu
   Suwon, Gyeonggi-Do  16419
   Republic of Korea

   Phone: +82 31 299 4957
   Fax:   +82 31 290 7996
   EMail: pauljeong@skku.edu
   URI:   http://iotlab.skku.edu/people-jaehoon-jeong.php


   Taekyun Roh
   Electrical Computer Engineering
   Sungkyunkwan University
   2066 Seobu-Ro, Jangan-Gu
   Suwon, Gyeonggi-Do  16419
   Republic of Korea

   Phone: +82 31 290 7222
   Fax:   +82 31 299 6673
   EMail: tkroh0198@skku.edu
   URI:   http://imtl.skku.ac.kr/xe/index.php?mid=board_YoKq57






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Internet-Draft   Registration Interface YANG Data Model        July 2018


   Sarang Wi
   Electrical Computer Engineering
   Sungkyunkwan University
   2066 Seobu-Ro, Jangan-Gu
   Suwon, Gyeonggi-Do  16419
   Republic of Korea

   Phone: +82 31 290 7222
   Fax:   +82 31 299 6673
   EMail: dnl9795@skku.edu
   URI:   http://imtl.skku.ac.kr/xe/index.php?mid=board_YoKq57


   Jung-Soo Park
   Electronics and Telecommunications Research Institute
   218 Gajeong-Ro, Yuseong-Gu
   Daejeon  305-700
   Republic of Korea

   Phone: +82 42 860 6514
   EMail: pjs@etri.re.kr






























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