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Re: [TLS] SNI from CDN to Origin (was I-D Action: draft-ietf-tls-sni-encryption-08.txt)

Rob Sayre <sayrer@gmail.com> Thu, 10 October 2019 16:44 UTC

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In-Reply-To: <59F21D9B-10BB-4E12-9AFF-5D88AB7DCA35@akamai.com>
From: Rob Sayre <sayrer@gmail.com>
Date: Thu, 10 Oct 2019 23:44:06 +0700
Message-ID: <CAChr6Szxavme4ErzR6Cf4RU7uF3ibgO6YtXPdi-VkTNbx9DuWA@mail.gmail.com>
To: "Salz, Rich" <rsalz@akamai.com>
Cc: Eric Rescorla <ekr@rtfm.com>, "TLS@ietf.org" <tls@ietf.org>
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Subject: Re: [TLS] SNI from CDN to Origin (was I-D Action: draft-ietf-tls-sni-encryption-08.txt)
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M
On Thu, Oct 10, 2019 at 11:18 PM Salz, Rich <rsalz@akamai.com> wrote:

> One reason for using DNS is that big sites often use a multi-CDN load
> balancer.  They can shift in as little as 10-30 seconds.
>

Also, just to level-set the conversation, I am extremely familiar with this
routine (see sayrer.com)

It seems like load-balanced IPs with an API would do the job better than
DNS. At the time I had to deal with these problems, DNS was the only
choice, and every CDN vendor seemed incompetent and unreliable. So I can
understand why DNS is still the default.

thanks,
Rob

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