Multi-homing Deployment Considerations for Distributed-Denial-of-Service Open Threat Signaling (DOTS)
draft-boucadair-dots-multihoming-04

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Network Working Group                                       M. Boucadair
Internet-Draft                                                    Orange
Intended status: Standards Track                                T. Reddy
Expires: April 10, 2019                                           McAfee
                                                         October 7, 2018

Multi-homing Deployment Considerations for Distributed-Denial-of-Service
                      Open Threat Signaling (DOTS)
                  draft-boucadair-dots-multihoming-04

Abstract

   This document discusses multi-homing considerations for Distributed-
   Denial-of-Service Open Threat Signaling (DOTS).  The goal is to
   provide a set of guidance for DOTS clients/gateways when multihomed.

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   This Internet-Draft will expire on April 10, 2019.

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   Copyright (c) 2018 IETF Trust and the persons identified as the
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Boucadair & Reddy        Expires April 10, 2019                 [Page 1]
Internet-Draft              DOTS Multihoming                October 2018

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   4
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Multi-Homing Scenarios  . . . . . . . . . . . . . . . . . . .   4
     4.1.  Residential CPE . . . . . . . . . . . . . . . . . . . . .   4
     4.2.  Multi-homed Enterprise: Single CPE, Multiple Upstream
           ISPs  . . . . . . . . . . . . . . . . . . . . . . . . . .   5
     4.3.  Multi-homed Enterprise: Multiple CPEs, Multiple Upstream
           ISPs  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     4.4.  Multi-homed Enterprise with the Same ISP  . . . . . . . .   7
   5.  DOTS Deployment Considerations  . . . . . . . . . . . . . . .   7
     5.1.  Residential CPE . . . . . . . . . . . . . . . . . . . . .   7
     5.2.  Multi-homed Enterprise: Single CPE, Multiple Upstream
           ISPs  . . . . . . . . . . . . . . . . . . . . . . . . . .   8
     5.3.  Multi-homed Enterprise: Multiple CPEs, Multiple Upstream
           ISPs  . . . . . . . . . . . . . . . . . . . . . . . . . .  10
     5.4.  Multi-homed Enterprise: Single ISP  . . . . . . . . . . .  11
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  12
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Introduction

   In many deployments, it may not be possible for a network to
   determine the cause for a distributed Denial-of-Service (DoS) attack
   [RFC4732], but instead just realize that some resources seem to be
   under attack.  To fill that gap, the IETF is specifying an
   architecture, called DDoS Open Threat Signaling (DOTS)
   [I-D.ietf-dots-architecture], in which a DOTS client can inform a
   DOTS server that the network is under a potential attack and that
   appropriate mitigation actions are required.  Indeed, because the
   lack of a common method to coordinate a real-time response among
   involved actors and network domains inhibits the effectiveness of
   DDoS attack mitigation, DOTS protocol is meant to carry requests for
   DDoS attack mitigation, thereby reducing the impact of an attack and
   leading to more efficient defensive actions.
   [I-D.ietf-dots-use-cases] identifies a set of scenarios for DOTS;