A method for dots server deployment
draft-chen-dots-server-hierarchical-deployment-03

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Authors chenmeiling  , Li Su 
Last updated 2020-06-24
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DOTS                                                      M. Chen
Internet-Draft                                                    Li. Su
Intended status: Informational                              China Mobile
Expires: December 26, 2020                                 June 24, 2020

                  A method for dots server deployment
           draft-chen-dots-server-hierarchical-deployment-03

Abstract

   As DOTS is used for DDoS Mitigation signaling, there are different
   deployment scenarios for DOTS agents deployment depending on the
   network topology.  This document made recommandations for DOTS Server
   deployment, include ISP and enterprise deployment scenarios.  The
   goal is to provide some guidance for DOTS agents deployment.

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   This Internet-Draft will expire on December 26, 2020.

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Chen & Su               Expires December 26, 2020               [Page 1]
Internet-Draft     dots server hierarchical deployment         June 2020

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  DOTS server Considerations  . . . . . . . . . . . . . . . . .   3
   4.  DOTS server deployment inside an ISP  . . . . . . . . . . . .   4
     4.1.  DOTS Agents Deployment  . . . . . . . . . . . . . . . . .   4
     4.2.  DOTS Agents interfaces  . . . . . . . . . . . . . . . . .   7
       4.2.1.  Bandwidth consuming attack  . . . . . . . . . . . . .   8
       4.2.2.  Host resource consuming attack  . . . . . . . . . . .   8
   5.  DOTS server deployment between ISPs . . . . . . . . . . . . .   8
   6.  DOTS server deployment for Enterprise . . . . . . . . . . . .   9
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   9.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .  10
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  10
     10.2.  Informative References . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   DDoS Open Threat Signaling (DOTS) is a protocol to standardize real-
   time signaling, threat-handling
   requests[I-D.ietf-dots-signal-channel], when attack target is under
   attack, dots client send mitigation request to dots server for help,
   If the mitigation request contains enough messages of the attack,
   then the mitigator can respond very effectively.

   In the architecture draft[I-D.ietf-dots-architecture], when comes to
   the deployment topic, it says this does not necessarily imply that
   the attack target and the DOTS client have to be co-located in the
   same administrative domain, but it is expected to be a common
   scenario.  Although co-location of DOTS server and mitigator within
   the same domain is expected to be a common deployment model, it is
   assumed that operators may require alternative models.

   In the DOTS server discovery draft[I-D.ietf-dots-server-discovery],
   it is says that a key point in the deployment of DOTS is the ability
   of network operators to be able to configure DOTS clients with the
   correct DOTS server(s) information consistently.

   In the DOTS multihoming draft[I-D.ietf-dots-multihoming], it provides
   deployment recommendations for DOTS client and DOTS gateway, it is
   says when conveying a mitigation request to protect the attack
   target, the DOTS client among the DOTS servers available Must select
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