Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759467AbXK0Wmy (ORCPT ); Tue, 27 Nov 2007 17:42:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752502AbXK0Wmp (ORCPT ); Tue, 27 Nov 2007 17:42:45 -0500 Received: from iriserv.iradimed.com ([72.242.190.170]:20979 "EHLO iradimed.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752422AbXK0Wmo (ORCPT ); Tue, 27 Nov 2007 17:42:44 -0500 Message-ID: <474C9D6A.4000505@cfl.rr.com> Date: Tue, 27 Nov 2007 17:42:50 -0500 From: Phillip Susi User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) MIME-Version: 1.0 To: =?UTF-8?B?TWlrYWVsIFN0w6VsZGFs?= CC: linux-kernel@vger.kernel.org Subject: Re: Possibility to adjust the only-root-can-bind-to-port-under-1024 limit References: <4742B3A3.2050103@univits.com> <20071120155303.76f234ec@astralstorm.puszkin.org> <474A975A.8020302@univits.com> In-Reply-To: <474A975A.8020302@univits.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-OriginalArrivalTime: 27 Nov 2007 22:42:59.0708 (UTC) FILETIME=[DC82A3C0:01C83146] X-TM-AS-Product-Ver: SMEX-7.5.0.1243-5.0.1023-15572.001 X-TM-AS-Result: No--5.317400-5.000000-31 X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 645 Lines: 16 Mikael Ståldal wrote: > And how do you protect ports >1024 from any user binding to them? > > Isn't the 1024 limit somewhat obsolete and arbitrary today? No, it is not obsolete, yes, it always was arbitrary. You prevent users from binding to those ports by only giving applications that need to the capability, and only letting the users that need to have execute permission to those programs. - 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/