Re: [TLS] access_administratively_disabled v2

Mateusz Jończyk <mat.jonczyk@o2.pl> Thu, 04 January 2018 12:48 UTC

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To: Benjamin Kaduk <bkaduk@akamai.com>, "<tls@ietf.org>" <tls@ietf.org>
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Subject: Re: [TLS] access_administratively_disabled v2
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W dniu 04.01.2018 o 11:46, Mateusz Jończyk pisze:
> W dniu 03.01.2018 o 18:05, Benjamin Kaduk pisze:
>> On 01/03/2018 10:17 AM, Mateusz Jończyk wrote:
>>> Judging from TLS1.3's problems with middleboxes, content filtering isn't so
>>> rare, especially in the corporate world.
>>>
>>> The provider of filtering services (for example OpenDNS) / middlebox
>>> manufacturer would have to recognize if the client supports this mechanism.
>>> Having support for TLS1.3 could be one such flag.
>>
>> Cherry-picking this one part just for enhanced clarity: I do not think
>> support for TLS 1.3 can or should be such a flag -- there does not seem
>> sufficient reason to block TLS 1.3 finalization for this proposal.
> 
> I would like to ask You to add just this one flag:
> access_administratively_disabled to TLS 1.3. This will allow graceful upgrade to
> full proposed functionality of the access_administratively_disabled mechanism.
> 
> I will try to submit an Internet Draft for the full mechanism till the end of
> this week.
> 

I have sent a pull request:
https://github.com/tlswg/tls13-spec/pull/1134
	Added access_denied_by_intermediary AlertDescription

	Network intermediaries (for example ISPs) may always block traffic by
	using e.g. access_denied. Make it more explicit by adding
	access_denied_by_intermediary.

	This will make censorship more transparent.

Greetings,
Mateusz Jończyk