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Requirements for Labeled NFS
draft-ietf-nfsv4-labreqs-05

Document type: Active Internet-Draft (nfsv4 WG)
Document stream: IETF
Last updated: 2014-02-06 (latest revision 2013-12-02)
Intended RFC status: Informational
Other versions: plain text, pdf, html

IETF State: WG Document
Consensus: Unknown
Document shepherd: Spencer Shepler
Shepherd Write-Up: Last changed 2012-10-07

IESG State: RFC Ed Queue
IANA Action State: No IC
RFC Editor State: AUTH48-DONE
Responsible AD: Martin Stiemerling
IESG Note: Spencer Shepler (spencer.shepler@gmail.com) is the document shepherd.
Send notices to: nfsv4-chairs@tools.ietf.org, draft-ietf-nfsv4-labreqs@tools.ietf.org

NFSv4                                                          T. Haynes
Internet-Draft                                                    NetApp
Intended status: Informational                         December 02, 2013
Expires: June 05, 2014

                      Requirements for Labeled NFS
                    draft-ietf-nfsv4-labreqs-05.txt

Abstract

   This memo outlines high-level requirements for the integration of
   flexible Mandatory Access Control (MAC) functionality into the
   Network File System (NFS) version 4.2 (NFSv4.2).  It describes the
   level of protections that should be provided over protocol components
   and the basic structure of the proposed system.  The intent here is
   not to present the protocol changes, but to describe the environment
   in which they reside.

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 http://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 June 05, 2014.

Copyright Notice

   Copyright (c) 2013 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
   (http://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

Haynes                    Expires June 05, 2014                 [Page 1]
Internet-Draft                ReqLabledNFS                 December 2013

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Definitions . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   4
   3.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Security Services . . . . . . . . . . . . . . . . . . . .   5
     3.3.  Label Encoding, Label Format Specifiers, and Label
           Checking Authorities  . . . . . . . . . . . . . . . . . .   5
     3.4.  Labeling  . . . . . . . . . . . . . . . . . . . . . . . .   6
       3.4.1.  Client Labeling . . . . . . . . . . . . . . . . . . .   6
       3.4.2.  Server Labeling . . . . . . . . . . . . . . . . . . .   7
     3.5.  Policy Enforcement  . . . . . . . . . . . . . . . . . . .   7
       3.5.1.  Client Enforcement  . . . . . . . . . . . . . . . . .   7
       3.5.2.  Server Enforcement  . . . . . . . . . . . . . . . . .   8
     3.6.  Namespace Access  . . . . . . . . . . . . . . . . . . . .   8
     3.7.  Upgrading Existing Server . . . . . . . . . . . . . . . .   8
   4.  Modes of Operation  . . . . . . . . . . . . . . . . . . . . .   9
     4.1.  Full Mode . . . . . . . . . . . . . . . . . . . . . . . .   9
     4.2.  Limited Server Mode . . . . . . . . . . . . . . . . . . .  10
     4.3.  Guest Mode  . . . . . . . . . . . . . . . . . . . . . . .  10
   5.  Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . .  11
     5.1.  Full MAC labeling support for remotely mounted
           filesystems . . . . . . . . . . . . . . . . . . . . . . .  11
     5.2.  MAC labeling of virtual machine images stored on the
           network . . . . . . . . . . . . . . . . . . . . . . . . .  11
     5.3.  Simple security label storage . . . . . . . . . . . . . .  11
     5.4.  Diskless Linux  . . . . . . . . . . . . . . . . . . . . .  12
     5.5.  Multi-Level Security  . . . . . . . . . . . . . . . . . .  12
       5.5.1.  Full Mode - MAC-functional Client and Server  . . . .  13
       5.5.2.  MAC-Functional Client . . . . . . . . . . . . . . . .  14
       5.5.3.  MAC-Functional Server . . . . . . . . . . . . . . . .  14
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
     7.1.  Trust Needed for a Community  . . . . . . . . . . . . . .  15
     7.2.  Guest Modes . . . . . . . . . . . . . . . . . . . . . . .  15

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