Re: [Add] [EXTERNAL] Re: draft-grover-add-policy-detection-00

"Dixon, Hugh" <Hugh.Dixon@sky.uk> Tue, 16 July 2019 11:50 UTC

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From: "Dixon, Hugh" <Hugh.Dixon@sky.uk>
To: Alec Muffett <alec.muffett@gmail.com>
CC: "add@ietf.org" <add@ietf.org>
Thread-Topic: [EXTERNAL] Re: [Add] draft-grover-add-policy-detection-00
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Subject: Re: [Add] [EXTERNAL] Re: draft-grover-add-policy-detection-00
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[gah – can’t get mail client to indent-and-mark quoted content properly..  sorry – using bullets … ]

From: Alec Muffett <alec.muffett@gmail.com>
Date: Tuesday, 16 July 2019 at 12:26
To: "Dixon, Hugh" <Hugh.Dixon@sky.uk>
Cc: "add@ietf.org" <add@ietf.org>
Subject: Re: [EXTERNAL] Re: [Add] draft-grover-add-policy-detection-00

On Tue, 16 Jul 2019, 11:31 Dixon, Hugh, <Hugh.Dixon@sky.uk<mailto:Hugh.Dixon@sky.uk>> wrote:
Hi Alec –
Hi Hugh!

Given that this is at its core (just) a protocol for asking (any) DNS server whether it has a filtering policy, won’t “non-compliant software” will be the sort of software which does not beacon?

·         That's kinda the whole point; the problem is that innocent people might try using Firefox to access Twitter from Turkey during a civil rights crackdown, their Firefox-implementing-this-mechanism will give them away as trying to evade Government blocking of Twitter, and they will end up arrested or worse.
Doesn’t requesting TBD.arpa signal intent-to-comply rather than the other way around?  I don’t quite get the link between “.. their Firefox-implementing-this-mechanism ..” and “..trying to evade .. blocking ..”. At any rate, it’s a draft policy-discovery protocol not an implementation guide, no?


·         Not everyone is in a position to welcome or appreciate upstream DNS filtering "for their own good" - for instance, this example from Turkey:
The proto doesn’t say that – it just drafts a possible mechanism for any DNS resolver to indicate to the caller that there is policy.  Could be for lots of reasons, and users with device/os/app admin intent and rights might well not check it, act on it, not act on it, sometimes act on it/interact with it.



·         It would seem regressive of Mozilla's principles to assist someone getting identified & thrown in jail for non-compliance with repressive blocking; not to mention - to repeat - the other obvious possibility is that any IP address which beacons-out a lookup of TBD.arpa will immediately be blackholed / firewalled, again to dissuade people from fact-checking their government's spokespeople.
I don’t get (see above) why a check for TBD.arpa indicates intent to subvert.  I was thinking [intent to subvert] <=> [not checking TBD.arpa] ..?

H

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