Re: [Dots] WGLC for draft-dots-use-cases-19
"Konda, Tirumaleswar Reddy" <TirumaleswarReddy_Konda@McAfee.com> Wed, 07 August 2019 06:35 UTC
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From: "Konda, Tirumaleswar Reddy" <TirumaleswarReddy_Konda@McAfee.com>
To: "mohamed.boucadair@orange.com" <mohamed.boucadair@orange.com>, Valery Smyslov <valery@smyslov.net>, "dots@ietf.org" <dots@ietf.org>
CC: "Xialiang (Frank, Network Standard & Patent Dept)" <frank.xialiang@huawei.com>
Thread-Topic: [Dots] WGLC for draft-dots-use-cases-19
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Date: Wed, 07 Aug 2019 06:35:03 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/dots/BJWHV7Jj-OPdESvHs46-eEIlVT4>
Subject: Re: [Dots] WGLC for draft-dots-use-cases-19
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> -----Original Message----- > From: mohamed.boucadair@orange.com > <mohamed.boucadair@orange.com> > Sent: Tuesday, August 6, 2019 7:06 PM > To: Konda, Tirumaleswar Reddy > <TirumaleswarReddy_Konda@McAfee.com>; Valery Smyslov > <valery@smyslov.net>; dots@ietf.org > Cc: Xialiang (Frank, Network Standard & Patent Dept) > <frank.xialiang@huawei.com> > Subject: RE: [Dots] WGLC for draft-dots-use-cases-19 > > This email originated from outside of the organization. Do not click links or > open attachments unless you recognize the sender and know the content is > safe. > > Re-, > > Please see inline. > > Cheers, > Med > > > -----Message d'origine----- > > De : Konda, Tirumaleswar Reddy > > [mailto:TirumaleswarReddy_Konda@McAfee.com] > > Envoyé : mardi 6 août 2019 15:08 > > À : BOUCADAIR Mohamed TGI/OLN; Valery Smyslov; dots@ietf.org Cc : > > Xialiang (Frank, Network Standard & Patent Dept) Objet : RE: [Dots] > > WGLC for draft-dots-use-cases-19 > > > ... > > > > > [Med] The recursive case is not covered in the current text. I > > > > > don't > > > > think we > > > > > need to elaborate on this further. > > > > > > > > I don't understand why recursive case should be excluded in the > > > > current text ? > > > > > > [Med] Because the use-case draft does not cover this: It only covers > > > the > > case > > > of an orchestrator talking to local routers. > > > > My question is why shouldn't the use case draft cover this ? > > [Med] Isn't this captured with the following? > > o DDoS Mitigation System (DMS): A system that performs DDoS > mitigation. The DDoS Mitigation System may be composed by a > cluster of hardware and/or software resources, but could also > involve an orchestrator that may take decisions such as > outsourcing partial or more of the mitigation to another DDoS > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > ^^ > Mitigation System. > > And > > Another typical scenario for this use case is the relation between > DDoS Mitigation Service Providers forming an overlay of DMS. When a > DDoS Mitigation Service Provider mitigating a DDoS attack reaches it > resources capacities, it may choose to delegate the DDoS Mitigation to > another DDoS Mitigation Service Provider. I missed above text, Thanks. > > > > > > > > > > > > > > > > > > > > However If orchestrator is enforcing > > > > > > filtering rules on routers, it should create the black-list > > > > > > rules based on the non-spoofed attacker IP address and not use > > > > > > the spoofed victim IP addresses. > > > > > > > > > > > > > > > > [Med] Agree. Whether the check is done at the orchestrator or by > > > > > the > > > > DMS, > > > > > is not a new concern. The DMS has to proceed with these checks, > > anyway. > > > > I > > > > > fail to see what is NEW and SPECIFIC to the offload scenario. > > > > > > > > In this case the check has to be done by orchestrator when > > > > enforcing black-list rules not to penalize the spoofed victim IP > > > > addresses and should be discussed in the new use case. > > > > > > [Med] This requirement has to be followed by the DMS, anyway. This > > > is > > not a > > > new issue, Tiru. > > > > No, sending attack information to the DOTS server is not covered in > > any of the WG documents. > > > > [Med] The text is about "additional hints". This is all what DOTS is about :-) Yes, but the NEW text is discussing conveying attack information for the first time and it needs more details. > > > > > > > I don't see any other use case in > > > > the specification discussing offload scenario with propagating the > > > > attack information and I recommend updating the text discussing > > > > the above scenarios. > > > > > > [Med] We don't have a similar text for the DMS case because > > > mitigation > > is > > > out of scope. I'm expecting to follow the some rationale for the > > offload. > > > > If mitigation is out of scope, remove the following line: > > Then the orchestrator can take further actions like requesting > > forwarding nodes such as routers to filter the traffic. > > [Med] This sentence is similar to saying the "DMS starts mitigation" but with > more contextualized information for a network orchestrator. The sentence > uses "can", "like" which is fine for illustration purposes. As a reader, I prefer > to leave it. I suggest to add more details discussed in the thread. Anyways, will leave it to you and the authors to decide, and I am not objecting to progressing the draft without the proposed update. Cheers, -Tiru
- [Dots] WGLC for draft-dots-use-cases-19 Valery Smyslov
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 Töma Gavrichenkov
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 H Y
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 Jon Shallow
- Re: [Dots] WGLC for draft-dots-use-cases-19 Töma Gavrichenkov
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 Töma Gavrichenkov
- Re: [Dots] WGLC for draft-dots-use-cases-19 H Y
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 Töma Gavrichenkov
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 mohamed.boucadair
- Re: [Dots] WGLC for draft-dots-use-cases-19 Konda, Tirumaleswar Reddy
- Re: [Dots] WGLC for draft-dots-use-cases-19 Valery Smyslov
- Re: [Dots] WGLC for draft-dots-use-cases-19 Töma Gavrichenkov
- Re: [Dots] WGLC for draft-dots-use-cases-19 H Y