Boris Pismenny <borispisme...@gmail.com> 于2023年3月2日周四 18:43写道:

>
> On Tue, Feb 28, 2023 at 2:18 PM Lanlan Pan <abby...@gmail.com> wrote:
>
>> Personally I think, the negotiation may cause the downgrade security
>> risk, making PNE not actually work for privacy protection.
>> The hardware acceleration can support both PNE and plaintext packet
>> number.
>> Maybe we can consider assigning a new port, just for plaintext packet
>> number's QUIC/DTLS ?
>> such as :
>> port 80: plain text, http
>> port 443: QUIC with PNE/TLS, by default.
>> port 886: QUIC with plaintext packet number, only used on specific
>> environments.
>> port 4433: DTLS with PNE, by default.
>> port 8866: DTLS with plaintext packet number, only used on specific
>> environments.
>>
>>>
>>>
> Thanks for proposing this.
>
> Multiplexing at the transport layer would work, and I don't mind going
> that route.
> But I'm not sure if that's so much different from negotiating in-band
> given that
> the default configuration is to disallow plaintext packet numbers.
>

Thanks Boris.
My concern is, negotiating in-band, may make us hard to prevent the abuse
of "NO PNE" configuration.


> Moreover, DTLS1.2 and DTLS1.3 use the same port while providing different
> guarantees related to PNE, so using this logic suggests that DTLS1.2 should
> run on a different port too?!
>

The logic is, the default port 4433 follows default DTLS specification, no
change.
DTLS1.2 runs at 4433, no change.
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