Distributed Denial-of-Service Open Threat Signaling (DOTS) Signal Channel Specification
draft-ietf-dots-signal-channel-25

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DOTS                                                       T. Reddy, Ed.
Internet-Draft                                                    McAfee
Intended status: Standards Track                       M. Boucadair, Ed.
Expires: March 9, 2019                                            Orange
                                                                P. Patil
                                                                   Cisco
                                                            A. Mortensen
                                                    Arbor Networks, Inc.
                                                               N. Teague
                                                          Verisign, Inc.
                                                       September 5, 2018

   Distributed Denial-of-Service Open Threat Signaling (DOTS) Signal
                         Channel Specification
                   draft-ietf-dots-signal-channel-25

Abstract

   This document specifies the DOTS signal channel, a protocol for
   signaling the need for protection against Distributed Denial-of-
   Service (DDoS) attacks to a server capable of enabling network
   traffic mitigation on behalf of the requesting client.

   A companion document defines the DOTS data channel, a separate
   reliable communication layer for DOTS management and configuration
   purposes.

Editorial Note (To be removed by RFC Editor)

   Please update these statements within the document with the RFC
   number to be assigned to this document:

   o  "This version of this YANG module is part of RFC XXXX;"

   o  "RFC XXXX: Distributed Denial-of-Service Open Threat Signaling
      (DOTS) Signal Channel Specification";

   o  "| [RFCXXXX] |"

   o  reference: RFC XXXX

   Please update TBD statements with the port number to be assigned to
   DOTS Signal Channel Protocol.

   Also, please update the "revision" date of the YANG module.

Reddy, et al.             Expires March 9, 2019                 [Page 1]
Internet-Draft        DOTS Signal Channel Protocol        September 2018

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 March 9, 2019.

Copyright Notice

   Copyright (c) 2018 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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Design Overview . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  DOTS Signal Channel: Messages & Behaviors . . . . . . . . . .   8
     4.1.  DOTS Server(s) Discovery  . . . . . . . . . . . . . . . .   8
     4.2.  CoAP URIs . . . . . . . . . . . . . . . . . . . . . . . .   9
     4.3.  Happy Eyeballs for DOTS Signal Channel  . . . . . . . . .   9
     4.4.  DOTS Mitigation Methods . . . . . . . . . . . . . . . . .  11
       4.4.1.  Request Mitigation  . . . . . . . . . . . . . . . . .  11
       4.4.2.  Retrieve Information Related to a Mitigation  . . . .  26
         4.4.2.1.  DOTS Servers Sending Mitigation Status  . . . . .  30
         4.4.2.2.  DOTS Clients Polling for Mitigation Status  . . .  33
       4.4.3.  Efficacy Update from DOTS Clients . . . . . . . . . .  34
       4.4.4.  Withdraw a Mitigation . . . . . . . . . . . . . . . .  36

Reddy, et al.             Expires March 9, 2019                 [Page 2]
Internet-Draft        DOTS Signal Channel Protocol        September 2018

     4.5.  DOTS Signal Channel Session Configuration . . . . . . . .  37
       4.5.1.  Discover Configuration Parameters . . . . . . . . . .  39
       4.5.2.  Convey DOTS Signal Channel Session Configuration  . .  43
       4.5.3.  Configuration Freshness and Notifications . . . . . .  48