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, 24 Jan 2001 09:06:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 24 Jan 2001 09:06:39 -0500 Received: from mailhost1.dircon.co.uk ([194.112.32.65]:41234 "EHLO mailhost1.dircon.co.uk") by vger.kernel.org with ESMTP id ; Wed, 24 Jan 2001 09:06:28 -0500 From: Mark Longair To: linux-kernel@vger.kernel.org Cc: "Richard B. Johnson" Subject: Re: [2.2.18] outgoing connections getting stuck in SYN_SENT In-Reply-To: <14942.18985.174437.785751@starfruit.iwks.multi.local> Date: 24 Jan 2001 14:01:14 +0000 In-Reply-To: Mark Longair's message of "Fri, 12 Jan 2001 00:04:57 +0000 (GMT)" Message-ID: <871ytt1239.fsf@starfruit.iwks.multi.local> X-Mailer: Gnus v5.6.45/XEmacs 21.1 - "Capitol Reef" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Mark Longair writes: [..] > I'm having a problem where twice a day or so, any new tcp connection > it gets stuck in SYN_SENT. Eventually this situation rights itself, > but obviously in the meantime many services (e.g. squid, X) are > broken. The machine does IP masquerdading with ipchains, and > masqueraded connections through it seem to be unaffected. The > kernel version is 2.2.18, although the same happened with 2.2.17. [..] It turned out that this was caused by using autofw to forward a range of ports (2300-2400 in this case.) It seems that these ports aren't reserved in any way, so eventually the server tries to use one as a local port on an outgoing connection. There was a previous reference to this on the list: http://kernelnotes.org/lnxlists/linux-kernel/lk_9908_01/msg00573.html I'm looking at finding fix for that. Would this be an issue with the new networking code in 2.4? Thanks for the suggestions... - 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/