From owner-freebsd-questions@FreeBSD.ORG Fri Feb 23 12:56:51 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id BBE2B16A405 for ; Fri, 23 Feb 2007 12:56:51 +0000 (UTC) (envelope-from keramida@ceid.upatras.gr) Received: from igloo.linux.gr (igloo.linux.gr [62.1.205.36]) by mx1.freebsd.org (Postfix) with ESMTP id 1DB1613C461 for ; Fri, 23 Feb 2007 12:56:50 +0000 (UTC) (envelope-from keramida@ceid.upatras.gr) Received: from kobe.laptop (host5.bedc.ondsl.gr [62.103.39.229]) (authenticated bits=128) by igloo.linux.gr (8.13.8/8.13.8/Debian-3) with ESMTP id l1NCuGWH006235 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 23 Feb 2007 14:56:30 +0200 Received: from kobe.laptop (kobe.laptop [127.0.0.1]) by kobe.laptop (8.13.8/8.13.8) with ESMTP id l1NCtsmq002891; Fri, 23 Feb 2007 14:56:08 +0200 (EET) (envelope-from keramida@ceid.upatras.gr) Received: (from keramida@localhost) by kobe.laptop (8.13.8/8.13.8/Submit) id l1NCtrsA002890; Fri, 23 Feb 2007 14:55:53 +0200 (EET) (envelope-from keramida@ceid.upatras.gr) Date: Fri, 23 Feb 2007 14:55:52 +0200 From: Giorgos Keramidas To: RW Message-ID: <20070223125552.GA2846@kobe.laptop> References: <200702202021.55723.pablo.fernandez@rs.com.ar> <19861fba0702211038p3144271ey1e30cf67311678ef@mail.gmail.com> <20070222143030.0b858e86@gumby.homeunix.com> <19861fba0702221445r3124eecbq852d774d0ed4e479@mail.gmail.com> <20070223023606.13be5e5e@gumby.homeunix.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070223023606.13be5e5e@gumby.homeunix.com> X-Hellug-MailScanner: Found to be clean X-Hellug-MailScanner-SpamCheck: not spam, SpamAssassin (not cached, score=-3.501, required 5, autolearn=not spam, ALL_TRUSTED -1.80, AWL 0.70, BAYES_00 -2.60, DNS_FROM_RFC_ABUSE 0.20) X-Hellug-MailScanner-From: keramida@ceid.upatras.gr X-Spam-Status: No Cc: freebsd-questions@freebsd.org Subject: Re: PF slowing down file copies X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Feb 2007 12:56:51 -0000 On 2007-02-23 02:36, RW wrote: > On Thu, 22 Feb 2007 23:45:06 +0100 J65nko wrote: > > The OP did not keep state on TCP connections using "flags S/SA". That > > can cause problems for TCP window scaling (defined in RFC 1323) and > > result in stalling connections. > > > > From http://undeadly.org/cgi?action=article&sid=20060928081238 under > > "Create TCP states on the initial SYN packet" > > How can a TCP connection start with anything other than an initial SYN > packet? Misconfigured load-balancers are a common culprit for this sort of bug :)