From: Andi Kleen <ak@suse.de>
To: "Paul Albrecht" <palbrecht@qwest.net>
Cc: niv@us.ibm.com, linux-kernel@vger.kernel.org,
"netdev" <netdev@oss.sgi.com>
Subject: Re: question about linux tcp request queue handling
Date: 07 Jul 2003 23:48:10 +0200 [thread overview]
Message-ID: <p73fzliqa91.fsf@oldwotan.suse.de> (raw)
In-Reply-To: <001401c344df$ccbc63c0$6801a8c0@oemcomputer.suse.lists.linux.kernel>
"Paul Albrecht" <palbrecht@qwest.net> writes:
> This statement is inconsistent with the description of this scenario in
> Steven's TCP/IP Illustrated. Specifically, continuing the handshake in the
> TCP layer, i.e., sending a syn/ack and moving to the syn_recd state, is
> incorrect if the limit of the server's socket backlog would be exceeded.
> How do you account for this discrepancy between linux and other
> berkeley-derived implementations?
The 4.4BSD-Lite code described in Stevens is long outdated. All modern
BSDs (and probably most other Unixes too) do it in a similar way to what
Nivedita described. The keywords are "syn flood attack" and "DoS".
-Andi
next parent reply other threads:[~2003-07-07 21:34 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3F08858E.8000907@us.ibm.com.suse.lists.linux.kernel>
[not found] ` <001a01c3441c$6fe111a0$6801a8c0@oemcomputer.suse.lists.linux.kernel>
[not found] ` <3F08B7E2.7040208@us.ibm.com.suse.lists.linux.kernel>
[not found] ` <000d01c3444f$e6439600$6801a8c0@oemcomputer.suse.lists.linux.kernel>
[not found] ` <3F090A4F.10004@us.ibm.com.suse.lists.linux.kernel>
[not found] ` <001401c344df$ccbc63c0$6801a8c0@oemcomputer.suse.lists.linux.kernel>
2003-07-07 21:48 ` Andi Kleen [this message]
2003-07-07 22:25 ` question about linux tcp request queue handling Doug McNaught
2003-07-07 23:52 ` Andi Kleen
2003-07-08 0:17 ` Doug McNaught
2003-07-08 0:25 ` Andi Kleen
2003-07-08 14:09 ` Horst von Brand
2003-07-08 4:14 ` Paul Albrecht
2003-07-08 19:23 ` Paul Albrecht
2003-07-06 21:19 Paul Albrecht
-- strict thread matches above, loose matches on Subject: below --
2003-07-06 20:24 Nivedita Singhvi
2003-07-07 0:12 ` Paul Albrecht
2003-07-06 23:59 ` Nivedita Singhvi
2003-07-07 6:20 ` Paul Albrecht
2003-07-07 5:51 ` Nivedita Singhvi
2003-07-07 5:59 ` Nivedita Singhvi
2003-07-07 23:30 ` Paul Albrecht
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