netdev - Re: [PATCH RFC 0/5] netfilter: implement netfilter SYN proxy

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Message-ID: <CADVnQy=WAiEAcVkB6c3NPATVnd+uAjE87QEWnomWUr4+Dy-fdg@mail.gmail.com>
Date:	Fri, 9 Aug 2013 09:55:28 -0400
From:	Neal Cardwell <ncardwell@...gle.com>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	David Miller <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>, pablo@...filter.org,
	netfilter-devel@...r.kernel.org, Netdev <netdev@...r.kernel.org>,
	mph@....com, jesper.brouer@...il.com, as@....com
Subject: Re: [PATCH RFC 0/5] netfilter: implement netfilter SYN proxy

> It seems, Windows stopped using tcp timestamps at least in windows 8 by
> default.

I agree we should not let the Windows TCP stack behavior dictate the
approach, but just wanted to point out that it's not just Windows 8
that lacks timestamps. It's more that Windows 7 is about the only
sizable Windows deployment that does use timestamps. Windows NT,
Windows 2000, Windows XP, Windows Vista, and Windows 8 all do not use
timestamps by default, and that adds up to about 30-40% of Internet
clients, depending on who's measuring. Something to keep in mind.

neal
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