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[tcpm] Fwd: Re: Data on 'Nonce' and 'Broken' responses to AccECN SYN?

Bob Briscoe <ietf@bobbriscoe.net> Wed, 18 July 2018 11:41 UTC

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References: <CANBVbAtF3nrSEW+Mf5vcmS9HioKaVSTr2JEvzrwX2xztkghQeQ@mail.gmail.com>
To: Michael Scharf <michael.scharf@gmail.com>
Cc: tcpm IETF list <tcpm@ietf.org>, ANNA MARIA MANDALARI <amandala@it.uc3m.es>
From: Bob Briscoe <ietf@bobbriscoe.net>
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Subject: [tcpm] Fwd: Re: Data on 'Nonce' and 'Broken' responses to AccECN SYN?
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Michael,

Below is data from 410,803 of the Alexa top 500k web server that 
confirms what I said in the presentation about space for future 
evolution of AccECN:

  * the nonce pattern on the SYN-ACK could be reused now (0.0007%)
  * the broken reflection pattern is still far too prevalent to re-use
    it (0.35%).

If anyone wants the list of broken servers that Anna attached for me, 
pls ask.
The whole dataset is also available via: 
http://www.it.uc3m.es/amandala/ecn++/

@Anna, thanks v much for responding so quickly - it was me that hadn't 
read your email in time for the talk.



Bob

-------- Forwarded Message --------
Subject: 	Re: Data on 'Nonce' and 'Broken' responses to AccECN SYN?
Date: 	Tue, 17 Jul 2018 15:42:10 +0200
From: 	ANNA MARIA MANDALARI <amandala@it.uc3m.es>
To: 	Bob Briscoe <research@bobbriscoe.net>



Hi Bob,

I had a look at the data and I found *1,438 servers *over the top 
410,803 Alexa (0.35%) that reply SYN/ACK+111 to a SYN+111 (attached the 
list).

Only *3 servers *(0.0007%) reply SYN/ACK+101 to a SYN+111:

test_synack;200.12.171.53;80;ect;0;flags;338
test_synack;60.28.220.134;80;ect;0;flags;338
test_synack;200.12.171.52;80;ect;0;flags;338

Let me know if I can help you with something else!






2018-07-17 13:26 GMT+02:00 Bob Briscoe <research@bobbriscoe.net 
<mailto:research@bobbriscoe.net>>:

    Anna,

    Could you do me a favour and look up how many servers responded to
    an AccECN (111) SYN with a SYN/ACK carrying respectively 'Nonce'
    (101) or 'Broken' (111)?

    And also the total number of tests sent with an AccECN SYN, so I can
    give proportions in the AccECN draft.

    Cheers



    Bob (too lazy to look at the data myself)

    -- 
    ________________________________________________________________
    Bob Briscoe http://bobbriscoe.net/




-- 
ANNA MARIA MANDALARI
Universidad Carlos III de Madrid

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