Re: [Dots] Mirja Kühlewind's Discuss on draft-ietf-dots-data-channel-28: (with DISCUSS and COMMENT)
<mohamed.boucadair@orange.com> Wed, 17 July 2019 08:10 UTC
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From: mohamed.boucadair@orange.com
To: Mirja Kuehlewind <ietf@kuehlewind.net>
CC: "Konda, Tirumaleswar Reddy" <TirumaleswarReddy_Konda@McAfee.com>, Roman Danyliw <rdd@cert.org>, "dots@ietf.org" <dots@ietf.org>, Benjamin Kaduk <kaduk@mit.edu>, The IESG <iesg@ietf.org>, "dots-chairs@ietf.org" <dots-chairs@ietf.org>, "draft-ietf-dots-data-channel@ietf.org" <draft-ietf-dots-data-channel@ietf.org>
Thread-Topic: [Dots] Mirja Kühlewind's Discuss on draft-ietf-dots-data-channel-28: (with DISCUSS and COMMENT)
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Date: Wed, 17 Jul 2019 08:10:07 +0000
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Subject: Re: [Dots] Mirja Kühlewind's Discuss on draft-ietf-dots-data-channel-28: (with DISCUSS and COMMENT)
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Hi Mirja, Please see inline. Cheers, Med > -----Message d'origine----- > De : Mirja Kuehlewind [mailto:ietf@kuehlewind.net] > Envoyé : mardi 16 juillet 2019 17:16 > À : BOUCADAIR Mohamed TGI/OLN > Cc : Konda, Tirumaleswar Reddy; Roman Danyliw; dots@ietf.org; Benjamin > Kaduk; The IESG; dots-chairs@ietf.org; draft-ietf-dots-data- > channel@ietf.org > Objet : Re: [Dots] Mirja Kühlewind's Discuss on draft-ietf-dots-data- > channel-28: (with DISCUSS and COMMENT) > [snip] > >>> > >>> Sure, will add the following text: > >>> > >>> A DOTS client can either maintain a persistent connection or periodic > >>> connections with its DOTS server(s). If the DOTS client needs to > >>> frequently update the drop-list or accept-list filtering rules or > >>> aliases, it maintains a persistent connection with the DOTS server. > >>> For example, CAPTCHA and cryptographic puzzles can be used by the > >>> mitigation service in the DOTS client domain to determine whether the > >>> IP address is used for legitimate purpose or not, and the DOTS client > >>> can frequently update the drop-list filtering rules. A persistent > >>> connection is also useful if the DOTS client subscribes to event > >>> notifications (Section 6.3 of [RFC8040]). > >>> > >>> - Tiru and Med > >> > >> Thanks! > >> > >> Two more small comments: > >> > >> At least to me the term “periodic" is not clear. I guess mean something > >> like short-lived connections, where you have a request, you open a > >> connection, send it, get a reply, and close the connection immediately > or > >> after a short idle period. Or is there actually any kind of periodicity > in > >> the dots protocol in general? Can you pleas clarify. > > > > [Med] We are trying to reuse the same terminology as RESTCONF (draft- > ietf-netconf-restconf-client-server). > > > > For the DOTS case, the DOTS client is required to register and send > requests to refresh the registration in regular intervals (otherwise, the > DOTS client won't be able to created filters). Likewise, cycles will be > observed because the client will need to maintains the aliases and ACLs it > created. The client may use these cycles for any planned activity (create > new aliases, create a new filter, etc.) or not. > > > >> > >> Also if a persistent connection is used, I think it would (again) be > good > >> to clarify what should be done if the connection fails. I think the > right > >> advise in this case, is to not reconnect immediately but only if you > have > >> another request to send, right? > >> > > > > [Med] draft-ietf-netconf-restconf-client-server voices for the > following: > > > > Maintain a persistent connection to the > > RESTCONF server. If the connection goes down, > > immediately start trying to reconnect to the > > RESTCONF server, using the reconnection strategy. > > > > Which is the right approach, IMO. > > > > We didn't touched on connection management because we are relying on > RESTCONF. DOTS will use whatever strategy adopted for RESTCONF. > > > > I don't think it is a good idea to add specific behavior into our spec. > > That is fine. I wasn’t aware that this is specified like this in RESTCONF > and that your are replying on it. Instead of (re-)specifying in this in > document, I would recommend to actually add a reference to this part of > the RESTCONF document and make clear that this is what you are replying > on. [Med] We can cite draft-ietf-netconf-restconf-client-server as an informative reference with the following text: Additional considerations related to RESTCONF connection management (including, configuring the connection type or the reconnect strategy) can be found in [I-D.ietf-netconf-restconf-client-server]. Better? > > Thanks! > Mirja
- [Dots] Mirja Kühlewind's Discuss on draft-ietf-do… Mirja Kühlewind via Datatracker
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… mohamed.boucadair
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Benjamin Kaduk
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Mirja Kuehlewind
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Konda, Tirumaleswar Reddy
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Mirja Kuehlewind
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Konda, Tirumaleswar Reddy
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Mirja Kuehlewind
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Konda, Tirumaleswar Reddy
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Mirja Kuehlewind
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… mohamed.boucadair
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Konda, Tirumaleswar Reddy
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Mirja Kuehlewind
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… mohamed.boucadair
- Re: [Dots] Mirja Kühlewind's Discuss on draft-iet… Mirja Kuehlewind