Distributed-Denial-of-Service Open Threat Signaling (DOTS) Server Discovery
draft-boucadair-dots-server-discovery-05

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

   Distributed-Denial-of-Service Open Threat Signaling (DOTS) Server
                               Discovery
                draft-boucadair-dots-server-discovery-05

Abstract

   It may not be possible for a network to determine the cause for an
   attack, but instead just realize that some resources seem to be under
   attack.  To fill that gap, Distributed-Denial-of-Service Open Threat
   Signaling (DOTS) allows a network to inform a DOTS server that it is
   under a potential attack so that appropriate mitigation actions are
   undertaken.

   This document specifies mechanisms to configure nodes with DOTS
   servers.

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
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   Internet-Drafts are draft documents valid for a maximum of six months
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   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 April 10, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Boucadair, et al.        Expires April 10, 2019                 [Page 1]
Internet-Draft            DOTS Server Discovery             October 2018

   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
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   4
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Why Multiple Discovery Mechanisms?  . . . . . . . . . . . . .   5
   5.  Discovery Procedure . . . . . . . . . . . . . . . . . . . . .   7
   6.  Resolution  . . . . . . . . . . . . . . . . . . . . . . . . .   8
   7.  Discovery using Service Resolution  . . . . . . . . . . . . .  10
     7.1.  Retrieving Domain Name  . . . . . . . . . . . . . . . . .  10
       7.1.1.  DHCP  . . . . . . . . . . . . . . . . . . . . . . . .  10
   8.  DNS Service Discovery . . . . . . . . . . . . . . . . . . . .  11
     8.1.  DNS-SD  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     8.2.  mDNS  . . . . . . . . . . . . . . . . . . . . . . . . . .  11
   9.  DHCP Options for DOTS . . . . . . . . . . . . . . . . . . . .  11
     9.1.  DHCPv6 DOTS Options . . . . . . . . . . . . . . . . . . .  12
       9.1.1.  Format of DOTS Reference Identifier Option  . . . . .  12
       9.1.2.  Format Format of DOTS Address Option  . . . . . . . .  13
       9.1.3.  DHCPv6 Client Behavior  . . . . . . . . . . . . . . .  13
     9.2.  DHCPv4 DOTS Options . . . . . . . . . . . . . . . . . . .  14
       9.2.1.  Format of DOTS Reference Identifier Option  . . . . .  14
       9.2.2.  Format Format of DOTS Address Option  . . . . . . . .  15
       9.2.3.  DHCPv4 Client Behavior  . . . . . . . . . . . . . . .  16
   10. Anycast . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  17
     11.1.  DHCP . . . . . . . . . . . . . . . . . . . . . . . . . .  18
     11.2.  Service Resolution . . . . . . . . . . . . . . . . . . .  18
     11.3.  DNS Service Discovery  . . . . . . . . . . . . . . . . .  18
     11.4.  Anycast  . . . . . . . . . . . . . . . . . . . . . . . .  18
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  19
     12.1.  DHCPv6 Option  . . . . . . . . . . . . . . . . . . . . .  19
     12.2.  DHCPv4 Option  . . . . . . . . . . . . . . . . . . . . .  19
     12.3.  Application Service & Application Protocol Tags  . . . .  19