LISP-Security (LISP-SEC)
draft-ietf-lisp-sec-22
Network Working Group F. Maino
Internet-Draft Cisco Systems
Intended status: Standards Track V. Ermagan
Expires: July 16, 2021 Google
A. Cabellos
Universitat Politecnica de Catalunya
D. Saucez
INRIA
January 12, 2021
LISP-Security (LISP-SEC)
draft-ietf-lisp-sec-22
Abstract
This memo specifies LISP-SEC, a set of security mechanisms that
provides origin authentication, integrity and anti-replay protection
to LISP's EID-to-RLOC mapping data conveyed via mapping lookup
process. LISP-SEC also enables verification of authorization on EID-
prefix claims in Map-Reply messages.
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 BCP14 [RFC2119]
[RFC8174] when, and only when, they appear in all capitals, as shown
here.
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 July 16, 2021.
Maino, et al. Expires July 16, 2021 [Page 1]
Internet-Draft LISP-SEC January 2021
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Definition of Terms . . . . . . . . . . . . . . . . . . . . . 4
3. LISP-SEC Threat Model . . . . . . . . . . . . . . . . . . . . 4
4. Protocol Operations . . . . . . . . . . . . . . . . . . . . . 5
5. LISP-SEC Control Messages Details . . . . . . . . . . . . . . 7
5.1. Encapsulated Control Message LISP-SEC Extensions . . . . 7
5.2. Map-Reply LISP-SEC Extensions . . . . . . . . . . . . . . 10
5.3. Map-Register LISP-SEC Extentions . . . . . . . . . . . . 11
5.4. ITR Processing: Generating a Map-Request . . . . . . . . 12
5.4.1. PITR Processing . . . . . . . . . . . . . . . . . . . 12
5.5. Encrypting and Decrypting an OTK . . . . . . . . . . . . 12
5.5.1. Unencrypted OTK . . . . . . . . . . . . . . . . . . . 14
5.6. Map-Resolver Processing . . . . . . . . . . . . . . . . . 14
5.7. Map-Server Processing . . . . . . . . . . . . . . . . . . 15
5.7.1. Generating a LISP-SEC Protected Encapsulated Map-
Request . . . . . . . . . . . . . . . . . . . . . . . 17
5.7.2. Generating a Proxy Map-Reply . . . . . . . . . . . . 18
5.8. ETR Processing . . . . . . . . . . . . . . . . . . . . . 18
5.9. ITR Processing: Receiving a Map-Reply . . . . . . . . . . 18
5.9.1. Map-Reply Record Validation . . . . . . . . . . . . . 20
6. Security Considerations . . . . . . . . . . . . . . . . . . . 21
6.1. Mapping System Security . . . . . . . . . . . . . . . . . 21
6.2. Random Number Generation . . . . . . . . . . . . . . . . 21
6.3. Map-Server and ETR Colocation . . . . . . . . . . . . . . 21
6.4. Deploying LISP-SEC . . . . . . . . . . . . . . . . . . . 21
6.5. Shared Keys Provisioning . . . . . . . . . . . . . . . . 22
6.6. Replay Attacks . . . . . . . . . . . . . . . . . . . . . 22
6.7. Message Privacy . . . . . . . . . . . . . . . . . . . . . 22
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