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Re: CSP: Drop IP-matching? (was Re: [CSP] URI/IRI normalization and comparison)

From: Mike West <mkwst@google.com>
Date: Wed, 28 Jan 2015 10:37:46 +0100
Message-ID: <CAKXHy=dG72QimQ3SU5ckEd8d9DGuQzZmcY+YCWhJto9rDjgX1Q@mail.gmail.com>
To: Brian Smith <brian@briansmith.org>
Cc: Brad Hill <hillbrad@gmail.com>, Anne van Kesteren <annevk@annevk.nl>, "public-webappsec@w3.org" <public-webappsec@w3.org>
On Mon, Jan 26, 2015 at 8:46 PM, Brian Smith <brian@briansmith.org> wrote:

> Brad Hill <hillbrad@gmail.com> wrote:
> > Public CAs are only to stop issuing for IP addresses in reserved ranges,
> I
> > believe. (,,,
> Yes, unfortunately, that does seem to be the case.
> I still think it is fine for CSP to restrict itself to and ::1.

I think that's theoretically sound. It's not clear to me that we can
actually do it, since we've been accepting ip addresses for the last ~2
years. I'll add some metrics to Chrome to see if usage is widespread enough
to worry about, or whether we can tighten things up without too many


Mike West <mkwst@google.com>, @mikewest

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Received on Wednesday, 28 January 2015 09:38:33 UTC

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