Re: [DNSOP] RFC 2136 pre-requisite checks before client authorization checks

Ted Lemon <mellon@fugue.com> Thu, 06 December 2018 15:17 UTC

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From: Ted Lemon <mellon@fugue.com>
Date: Thu, 6 Dec 2018 07:16:50 -0800
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To: muks@mukund.org
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Subject: Re: [DNSOP] RFC 2136 pre-requisite checks before client authorization checks
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Possibly because signature verification is thought to be expensive?

On Thu, Dec 6, 2018 at 6:45 AM Mukund Sivaraman <muks@mukund.org> wrote:

> Hi all
>
> Does anyone know why RFC 2136 sequences pre-requisite checks (section
> 3.2) to be performed before client permission checks (section 3.3)?  It
> seems weird to sequence them in this way, especially as it is cheaper to
> perform client IP address checks (and some zone permission checks)
> earlier in order.
>
> Section 3.3.2 talks about why the client permissions check is in that
> position previous to subsequent actions, but not why it can't be
> performed earlier.
>
>                 Mukund
>
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