Labeled IPsec Traffic Selector support for IKEv2
draft-ietf-ipsecme-labeled-ipsec-03

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Network                                                       P. Wouters
Internet-Draft                                                 S. Prasad
Updates: 7296 (if approved)                                      Red Hat
Intended status: Standards Track                           July 13, 2020
Expires: January 14, 2021

            Labeled IPsec Traffic Selector support for IKEv2
                  draft-ietf-ipsecme-labeled-ipsec-03

Abstract

   This document defines a new Traffic Selector (TS) Type for Internet
   Key Exchange version 2 to add support for negotiating Mandatory
   Access Control (MAC) security labels as a traffic selector of the
   Security Policy Database (SPD).  Security Labels for IPsec are also
   known as "Labeled IPsec".  The new TS type is TS_SECLABEL, which
   consists of a variable length opaque field specifying the security
   label.  This document updates the IKEv2 TS negotiation specified in
   RFC 7296 Section 2.9.

Status of This Memo

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   This Internet-Draft will expire on January 14, 2021.

Copyright Notice

   Copyright (c) 2020 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
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   (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

Wouters & Prasad        Expires January 14, 2021                [Page 1]
Internet-Draft                Labeled IPsec                    July 2020

   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
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Traffic Selector clarification  . . . . . . . . . . . . .   3
     1.3.  Traffic Selector update . . . . . . . . . . . . . . . . .   3
   2.  TS_SECLABEL Traffic Selector Type . . . . . . . . . . . . . .   4
     2.1.  TS_SECLABEL payload format  . . . . . . . . . . . . . . .   4
     2.2.  TS_SECLABEL properties  . . . . . . . . . . . . . . . . .   4
   3.  Traffic Selector negotiation  . . . . . . . . . . . . . . . .   5
     3.1.  Example TS negotiation  . . . . . . . . . . . . . . . . .   6
     3.2.  Considerations for using multiple TS_TYPEs in a TS  . . .   6
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   7
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   7
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   In computer security, Mandatory Access Control usually refers to
   systems in which all subjects and objects are assigned a security
   label.  A security label is comprised of a set of security
   attributes.  The security labels along with a system authorization
   policy determine access.  Rules within the system authorization
   policy determine whether the access will be granted based on the
   security attributes of the subject and object.

   Traditionally, security labels used by Multilevel Systems (MLS) are
   comprised of a sensitivity level (or classification) field and a
   compartment (or category) field, as defined in [FIPS188] and
   [RFC5570].  As MAC systems evolved, other MAC models gained in
   popularity.  For example, SELinux, a Flux Advanced Security Kernel
   (FLASK) implementation, has security labels represented as colon-
   separated ASCII strings composed of values for identity, role, and
   type.  The security labels are often referred to as security
   contexts.

   Traffic Selector (TS) payloads specify the selection criteria for
   packets that will be forwarded over the newly set up IPsec SA as
   enforced by the Security Policy Database (SPD, see [RFC4301]).  This