Re: [Ntp] WGLC: draft-ietf-ntp-interleaved-modes

Hi,

I believe the draft is ready for publication, assuming the following
comments are resolved.

Comments:
- The draft header should say that it updates RFC5905 (although it is
interoperable with existing implementations, which is mentioned in the
draft).
- "but that is difficult to implement in the current packet" - please
clarify that it is difficult to implement unless a hardware timestamping
mechanism is used.
- Please clarify what "reference implementation" refers to, including a
citation.
- In Section 2, please describe what happens when a client request is lost,
and what happens when a server response is lost, i.e., how each of the two
sides re-synchronizes to the correct request/response.
- Security considerations section: (1) Please mention the potential
DoS/DDoS threats that may arise from the fact that the server maintains a
per-client state. (2) Please also consider the following threat: a spoofed
client request may cause the server's copy of the {receive,transmit}
timestamp pair to be updated, thereby causing DoS to the legitimate client.
(3) I would suggest to add a general comment to the security
considerations, something like: "The security considerations of time
protocols in general are discussed in [RFC7384], and specifically the
security considerations of NTP are discussed in [RFC5905].".

Cheers,
Tal.

On Tue, Nov 6, 2018 at 10:49 PM Karen O'Donoghue <odonoghue@isoc.org> wrote:

> Folks,
>
> This message initiates a three plus week working group last call for:
>
> NTP Interleaved Modes
> https://datatracker.ietf.org/doc/draft-ietf-ntp-interleaved-modes/
>
> Please review the referenced document and send any comments to the mailing
> list including your assessment of whether this document is mature enough to
> proceed to the IESG. Please note that these messages of support for
> progression to the mailing list will be used to determine WG consensus to
> proceed.
>
> Please send all comments in by COB on Friday 30 November. We realize this
> is a bit longer than normal but we are coming out of an IETF week and
> heading into the Thanksgiving holiday in the US.
>
> Thanks!
> Karen and Dieter
>
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