Security Automation and Continuous Monitoring (SACM) Requirements
RFC 8248

Document Type RFC - Informational (September 2017; No errata)
Last updated 2017-09-21
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Stream WG state Submitted to IESG for Publication (wg milestones: May 2015 - Complete WGLC of SAC..., Jul 2015 - Submit SACM Requirem... )
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Internet Engineering Task Force (IETF)                     N. Cam-Winget
Request for Comments: 8248                                 Cisco Systems
Category: Informational                                      L. Lorenzin
ISSN: 2070-1721                                             Pulse Secure
                                                          September 2017

   Security Automation and Continuous Monitoring (SACM) Requirements

Abstract

   This document defines the scope and set of requirements for the
   Security Automation and Continuous Monitoring (SACM) architecture,
   data model, and transfer protocols.  The requirements and scope are
   based on the agreed-upon use cases described in RFC 7632.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8248.

Copyright Notice

   Copyright (c) 2017 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
   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.

Cam-Winget & Lorenzin         Informational                     [Page 1]
RFC 8248                    SACM Requirements             September 2017

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Requirements for SACM . . . . . . . . . . . . . . . . . .   4
     2.2.  Requirements for the Architecture . . . . . . . . . . . .   7
     2.3.  Requirements for the Information Model  . . . . . . . . .   9
     2.4.  Requirements for the Data Model . . . . . . . . . . . . .  10
     2.5.  Requirements for Data Model Operations  . . . . . . . . .  12
     2.6.  Requirements for SACM Transfer Protocols  . . . . . . . .  14
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
     4.1.  Trust between Provider and Requestor  . . . . . . . . . .  16
     4.2.  Privacy Considerations  . . . . . . . . . . . . . . . . .  17
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .  18
     5.2.  Informative References  . . . . . . . . . . . . . . . . .  18
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  18
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  19

1.  Introduction

   Today's environment of rapidly evolving security threats highlights
   the need to automate the sharing of security information (such as
   posture information) while protecting user information and the
   systems that store, process, and transmit this information.  Security
   threats can be detected in a number of ways.  The Security Automation
   and Continuous Monitoring (SACM) charter focuses on how to collect
   and share this information based on use cases that involve posture
   assessment of endpoints.

   Scalable and sustainable collection, expression, and evaluation of
   endpoint information is foundational to SACM's objectives.  To secure
   and defend a network, one must reliably determine what devices are on
   the network, how those devices are configured from a hardware
   perspective, what software products are installed on those devices,
   and how those products are configured.  We need to be able to
   determine, share, and use this information in a secure, timely,
   consistent, and automated manner to perform endpoint posture
   assessments.

   This document focuses on describing the requirements for facilitating
   the exchange of posture assessment information in the enterprise, in
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