Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268045AbUIUUHx (ORCPT ); Tue, 21 Sep 2004 16:07:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268043AbUIUUHx (ORCPT ); Tue, 21 Sep 2004 16:07:53 -0400 Received: from adsl-63-197-226-105.dsl.snfc21.pacbell.net ([63.197.226.105]:21896 "EHLO cheetah.davemloft.net") by vger.kernel.org with ESMTP id S268048AbUIUUHD (ORCPT ); Tue, 21 Sep 2004 16:07:03 -0400 Date: Tue, 21 Sep 2004 12:56:45 -0700 From: "David S. Miller" To: Florian Weimer Cc: herbert@gondor.apana.org.au, paul@clubi.ie, alan@lxorguk.ukuu.org.uk, vph@iki.fi, toon@hout.vanvergehaald.nl, admin@wolfpaw.net, kaukasoi@elektroni.ee.tut.fi, linux-kernel@vger.kernel.org Subject: Re: Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified) Denial of Service Attack Message-Id: <20040921125645.05fafd5a.davem@davemloft.net> In-Reply-To: <873c1bjwwj.fsf@deneb.enyo.de> References: <873c1bjwwj.fsf@deneb.enyo.de> X-Mailer: Sylpheed version 0.9.12 (GTK+ 1.2.10; sparc-unknown-linux-gnu) X-Face: "_;p5u5aPsO,_Vsx"^v-pEq09'CU4&Dc1$fQExov$62l60cgCc%FnIwD=.UF^a>?5'9Kn[;433QFVV9M..2eN.@4ZWPGbdi<=?[:T>y?SD(R*-3It"Vj:)"dP Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 637 Lines: 20 On Tue, 21 Sep 2004 20:32:12 +0200 Florian Weimer wrote: > > But then you get PMTU problems... > > PMTU discovery is not an issue because it's turned off anyway, at > least by default. It's on by default, for both TCP and UDP in the kernel, and has been so for a long time. Why would it be off by default? If you disable PMTU discovery, say goodbye to TCP performance. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/