From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Andi Kleen <andi@firstfloor.org>
Cc: Glenn Griffin <ggriffin.kernel@gmail.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Andi Kleen <andi@firstfloor.org>
Subject: Re: [PATCH] Add IPv6 support to TCP SYN cookies
Date: Tue, 5 Feb 2008 15:42:13 +0000 [thread overview]
Message-ID: <20080205154213.059ac6e8@core> (raw)
In-Reply-To: <20080205155558.GA23145@one.firstfloor.org>
> Syncookies are discouraged these days. They disable too many
> valuable TCP features (window scaling, SACK) and even without them
> the kernel is usually strong enough to defend against syn floods
> and systems have much more memory than they used to be.
Somewhat untrue. Network speeds have risen dramatically, the number of
appliances running Linux that are not PC class means memory has fallen
not risen and CPU has been pretty level.
> So I don't think it makes much sense to add more code to it, sorry.
I think it makes a lot of sense - providing it defaults off for the PC
world where as you say its use is limited.
Alan
next prev parent reply other threads:[~2008-02-05 15:42 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-04 23:01 [PATCH] Add IPv6 support to TCP SYN cookies Glenn Griffin
2008-02-05 15:55 ` Andi Kleen
2008-02-05 15:42 ` Alan Cox [this message]
2008-02-05 16:39 ` Andi Kleen
2008-02-05 16:03 ` Alan Cox
2008-02-05 16:48 ` Andi Kleen
2008-02-05 16:14 ` Alan Cox
2008-02-05 20:50 ` Willy Tarreau
2008-02-05 18:29 ` Glenn Griffin
2008-02-05 19:25 ` Ross Vandegrift
2008-02-05 20:11 ` Andi Kleen
2008-02-05 21:23 ` Ross Vandegrift
2008-02-06 8:53 ` Andi Kleen
2008-02-07 19:44 ` Ross Vandegrift
2008-02-08 12:07 ` Andi Kleen
2008-02-12 20:38 ` Ross Vandegrift
2008-02-05 20:02 ` Andi Kleen
2008-02-05 20:39 ` Evgeniy Polyakov
2008-02-05 20:53 ` Andi Kleen
2008-02-05 21:50 ` Evgeniy Polyakov
2008-02-05 21:20 ` Alan Cox
2008-02-05 21:52 ` Evgeniy Polyakov
2008-02-05 21:20 ` Willy Tarreau
2008-02-05 22:05 ` Alan Cox
2008-02-06 1:52 ` Glenn Griffin
2008-02-06 7:50 ` Andi Kleen
2008-02-06 17:36 ` Glenn Griffin
2008-02-06 18:45 ` Andi Kleen
2008-02-06 23:03 ` Glenn Griffin
2008-02-06 9:13 ` Evgeniy Polyakov
2008-02-06 18:30 ` Glenn Griffin
2008-02-07 7:24 ` Evgeniy Polyakov
2008-02-07 9:40 ` Eric Dumazet
2008-02-08 5:32 ` Glenn Griffin
2008-02-08 5:49 ` Glenn Griffin
2008-02-11 16:07 ` YOSHIFUJI Hideaki / 吉藤英明
2008-02-18 23:45 ` Glenn Griffin
2008-02-13 7:31 ` YOSHIFUJI Hideaki / 吉藤英明
2008-02-05 19:57 ` Jan Engelhardt
2008-02-05 21:25 ` Alan Cox
-- strict thread matches above, loose matches on Subject: below --
2008-02-04 23:01 Glenn Griffin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20080205154213.059ac6e8@core \
--to=alan@lxorguk.ukuu.org.uk \
--cc=andi@firstfloor.org \
--cc=ggriffin.kernel@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).