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Re: [TLS] Mail regarding draft-ietf-tls-record-limit

Jim Schaad <ietf@augustcellars.com> Mon, 19 February 2018 17:27 UTC

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From: Jim Schaad <ietf@augustcellars.com>
To: ilariliusvaara@welho.com
CC: 'Martin Thomson' <martin.thomson@gmail.com>, tls@ietf.org, draft-ietf-tls-record-limit@ietf.org
References: <008b01d3a94e$1cc174e0$56445ea0$@augustcellars.com> <CABkgnnUMKhnQS59Xt2=WaJp9Ywbzej6_vZ1u9R1dHE02ocir3Q@mail.gmail.com> <00a401d3a99f$28679e90$7936dbb0$@augustcellars.com> <20180219171827.GA28597@LK-Perkele-VII>
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Date: Mon, 19 Feb 2018 09:27:14 -0800
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Subject: Re: [TLS] Mail regarding draft-ietf-tls-record-limit
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> -----Original Message-----
> From: ilariliusvaara@welho.com [mailto:ilariliusvaara@welho.com]
> Sent: Monday, February 19, 2018 9:18 AM
> To: Jim Schaad <ietf@augustcellars.com>
> Cc: 'Martin Thomson' <martin.thomson@gmail.com>; tls@ietf.org; draft-ietf-
> tls-record-limit@ietf.org
> Subject: Re: [TLS] Mail regarding draft-ietf-tls-record-limit
> 
> On Mon, Feb 19, 2018 at 08:31:53AM -0800, Jim Schaad wrote:
> > Martin,
> >
> > I think that the wording I would prefer would be along the lines of
> >
> > A server MUST NOT error on the value of the extension when a higher
> > TLS version is requested.  The server MUST use the minimum of the
> > requested value and the maximum value for the TLS version negotiated.
> > A server MAY error if a the value of the extension is exceeded for the
> > version of TLS requested.
> 
> You need to consider the case where there is some unknown-to-server
> extension that happens to alter the limit.

I am not sure how, as a that server, I could possibly do that.  I can't act on something I don't understand.

Jim

> 
> 
> -Ilari

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