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Re: [Unbearable] HTTPS Token Binding with TLS Terminating Reverse Proxies

Piotr Sikora <piotrsikora@google.com> Mon, 17 July 2017 10:37 UTC

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From: Piotr Sikora <piotrsikora@google.com>
Date: Mon, 17 Jul 2017 12:37:56 +0200
Message-ID: <CAF-CG+LLji-peqisnw4MfFPe6dWqYOGEYnOK_7jhPyonVUct6g@mail.gmail.com>
To: Brian Campbell <bcampbell@pingidentity.com>
Cc: IETF Tokbind WG <unbearable@ietf.org>
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Subject: Re: [Unbearable] HTTPS Token Binding with TLS Terminating Reverse Proxies
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Hey Brian,
looks good, thanks for working on that!

One question:

>   Reverse proxies SHOULD only add the headers to requests that are
>   forwarded to trusted backend servers.

Why? What's the attack vector, security and/or privacy implications here?

Best regards,
Piotr Sikora

On Fri, Jul 14, 2017 at 6:59 PM, Brian Campbell
<bcampbell@pingidentity.com> wrote:
> Just a not-so-subtle reminder that HTTPS Token Binding with TLS Terminating
> Reverse Proxies is one of the agenda items for Monday's meeting in Prague
> and it would be great if there was some familiarity with it going into the
> meeting. It's relativity short as drafts go, if you're looking for something
> to read en route to the meeting:
> https://tools.ietf.org/html/draft-campbell-tokbind-ttrp-00
>
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