From mboxrd@z Thu Jan 1 00:00:00 1970 From: CaT Subject: possible dos / wsize affected frozen connection length (was: Re: 2.6.17.1: fails to fully get webpage) Date: Wed, 5 Jul 2006 10:55:41 +1000 Message-ID: <20060705005540.GL2344@zip.com.au> References: <20060629015915.GH2149@zip.com.au> <20060628.194627.74748190.davem@davemloft.net> <20060629030923.GI2149@zip.com.au> <20060628.204709.41634813.davem@davemloft.net> <20060629041827.GJ2149@zip.com.au> <44A3E898.1020202@tmr.com> <20060629225039.GO2149@zip.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from nessie.weebeastie.net ([220.233.7.36]:30222 "EHLO bunyip.lochness.weebeastie.net") by vger.kernel.org with ESMTP id S932356AbWGEAy3 (ORCPT ); Tue, 4 Jul 2006 20:54:29 -0400 To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Content-Disposition: inline In-Reply-To: <20060629225039.GO2149@zip.com.au> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Fri, Jun 30, 2006 at 08:50:39AM +1000, CaT wrote: > Another datapoint to this is that I've had this my netcat web test > running since 8:42pm yesterday. It's 8:37am now. It hasn't progressed > in any way. It hasn't quit. It hasn't timed out. It just sits there, > hung. This leads me to consider the possibility of a DOS, either > intentional or accidental (think about 2.6.17.x running on a mail server > and someone mails/spams from a broken place). I'm just wondering if connections hanging around this long are normal. The above has now been running for 6 days. netstat is still reporting an established session. netcat has not timed out. It's all just sitting there doing nothing. -- "To the extent that we overreact, we proffer the terrorists the greatest tribute." - High Court Judge Michael Kirby