netdev - Re: [PATCH] Clock-independent TCP ISN generation

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Date:   Tue, 3 Sep 2019 10:27:41 -0600
From:   Cyrus Sh <sirus.shahini@...il.com>
To:     Eric Dumazet <eric.dumazet@...il.com>, davem@...emloft.net
Cc:     shiraz.saleem@...el.com, jgg@...pe.ca, arnd@...db.de,
        netdev@...r.kernel.org, sirus@...utah.edu
Subject: Re: [PATCH] Clock-independent TCP ISN generation



On 9/3/19 10:17 AM, Eric Dumazet wrote:

> Do you have a real program showing us how this clock skew can be used practically ?
This is a well studied issue. You can take a look at this presentation as an
example:
http://caia.swin.edu.au/talks/CAIA-TALK-080728A.pdf

> You will have to convince people at IETF and get a proper RFC 
No I won't. A lot of these standards have been written at a time that anonymity
networks were not of big importance. Now that they are, we try to lessen the
negative impacts of some RFC deficiencies by improving the implementation. It's
up to you whether to want to keep using a problematic code that may endanger
users or want to do something about it since we won't insist on having a patch
accepted.