From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 29 Jan 2001 15:00:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 29 Jan 2001 15:00:14 -0500 Received: from smi-057.smith.uml.edu ([129.63.206.57]:62991 "HELO buick.pennace.org") by vger.kernel.org with SMTP id ; Mon, 29 Jan 2001 14:59:55 -0500 Date: Mon, 29 Jan 2001 14:59:50 -0500 From: Alex Pennace To: George Cc: "Albert D. Cahalan" , "David S. Miller" , linux-kernel@vger.kernel.org Subject: Re: ECN: Clearing the air (fwd) Message-ID: <20010129145950.A6208@buick.pennace.org> Mail-Followup-To: George , "Albert D. Cahalan" , "David S. Miller" , linux-kernel@vger.kernel.org In-Reply-To: <200101291831.f0TIV7h484162@saturn.cs.uml.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii User-Agent: Mutt/1.0.1i In-Reply-To: ; from greerga@entropy.muc.muohio.edu on Mon, Jan 29, 2001 at 02:26:51PM -0500 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 29, 2001 at 02:26:51PM -0500, George wrote: > On Mon, 29 Jan 2001, Albert D. Cahalan wrote: > >The author is expressing his wish for an ideal world. Note that he > >also accepts reality. He accepts that PMTU black holes won't go > >away, even though we might like them to do so. > > > >Hell, I think I'm behind one. ICMP is/was blocked to/from/within > >the entire university. This was to stop ping flood attacks. :-) > > So you get a UDP flood instead. > > Congratulations on breaking something important (PMTU, "Port unreachable", > etc.) for a false sense of security. Your praise should be directed to UML telecommunications. > Did you buy a non-upgraded Cisco PIX just to block ECN as well? I wouldn't doubt it, but I haven't tested it on this network. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/