Return-Path: Received: from p3plsmtpa09-08.prod.phx3.secureserver.net ([173.201.193.237]:32850 "EHLO p3plsmtpa09-08.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753213AbeBFS3d (ORCPT ); Tue, 6 Feb 2018 13:29:33 -0500 From: Tom Talpey Subject: Re: [PATCH 0/1] Remote calls don't need to use privilege ports To: Chuck Lever , Steve Dickson Cc: Linux NFS Mailing List References: <20180205163647.15822-1-steved@redhat.com> <16CF8126-7229-4963-B5D1-2AC16BFC000A@oracle.com> <6bd33601-2c59-3d19-ece2-878b885c2940@RedHat.com> <0f9b020a-4c65-4b3b-42b2-81f8f9ee0941@RedHat.com> <6EF07D03-7F1C-43D1-963B-ED28AD614BF4@oracle.com> Message-ID: <02863316-1c99-182c-b19e-cc1aff46c382@talpey.com> Date: Tue, 6 Feb 2018 13:22:12 -0500 MIME-Version: 1.0 In-Reply-To: <6EF07D03-7F1C-43D1-963B-ED28AD614BF4@oracle.com> Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-nfs-owner@vger.kernel.org List-ID: On 2/6/2018 12:34 PM, Chuck Lever wrote: > mountd can and should use a dynamic port assignment, IMO. > It doesn't have to use 20048. Speaking of 20048, does anyone know why Nico made this assignment? Apart from making it well-known for firewalls, what system(s) actually required it? I don't recall it ever being discussed. Using it is certainly not required, since portmap resolves it. https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt ++ mountd 20048 tcp NFS mount protocol [Nicolas_Williams] [Nicolas_Williams] 2010-08-09 ++ mountd 20048 udp NFS mount protocol [Nicolas_Williams] [Nicolas_Williams] 2010-08-09 Tom.