From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 10 Jan 2001 16:41:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 10 Jan 2001 16:41:01 -0500 Received: from logger.gamma.ru ([194.186.254.23]:48653 "EHLO logger.gamma.ru") by vger.kernel.org with ESMTP id ; Wed, 10 Jan 2001 16:40:51 -0500 To: linux-kernel@vger.kernel.org Path: pccross!not-for-mail From: crosser@average.org (Eugene Crosser) Newsgroups: linux.kernel Subject: Re: 2.4.0 tcp over firewall - no connection Date: 11 Jan 2001 00:38:36 +0300 Organization: Average Message-ID: <93ikos$p6r$1@pccross.average.org> In-Reply-To: Mime-Version: 1.0 X-Newsreader: knews 0.9.8 X-Comment-To: Doug McNaught Content-Type: text/plain; charset=koi8-r Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org In article , Doug McNaught writes: >> I noticed rather strange behavior: stock 2.4.0 with old ISA 3Com >> on UP compiled as UP cannot open TCP connection to hosts behind a >> firewall. E.g. it is impossible to go to http://www.etrade.com/ - >> connect just never finishes. 2.2.17 on the same hardware works >> right. 2.4.0 on SMP over PPP connection works right too. MTU >> is 1500 in both cases. In both cases, kernel is compiled with >> netfilter as modules, but those are not loaded. > > Known problem, exhaustively discussed on the list, and not related > to your NIC. Disable ECN (explicit congestion notification), either > in your kernel compile or in /proc/sys/. This really was ECN, sorry for noise in this list... Eugene - 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/