From owner-freebsd-net@freebsd.org Wed Nov 4 19:44:08 2015 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6B6DFA26163 for ; Wed, 4 Nov 2015 19:44:08 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from mail-in6.apple.com (mail-out6.apple.com [17.151.62.28]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 486D11A0D; Wed, 4 Nov 2015 19:44:07 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from relay5.apple.com (relay5.apple.com [17.128.113.88]) by mail-in6.apple.com (Apple Secure Mail Relay) with SMTP id 17.28.19062.0006A365; Wed, 4 Nov 2015 11:44:00 -0800 (PST) X-AuditID: 11973e15-f79976d000004a76-64-563a6000103f Received: from [17.149.226.107] (Unknown_Domain [17.149.226.107]) (using TLS with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by relay5.apple.com (Apple SCV relay) with SMTP id 7E.43.07593.0006A365; Wed, 4 Nov 2015 11:44:00 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 9.1 \(3096.5\)) Subject: Re: who uses this port? From: Charles Swiger In-Reply-To: <563A5F39.7010906@FreeBSD.org> Date: Wed, 4 Nov 2015 11:44:00 -0800 Cc: "freebsd-net@freebsd.org" Content-Transfer-Encoding: 7bit Message-Id: <6B1F31BD-863E-45E3-BD48-71B2E3702203@mac.com> References: <563A5F39.7010906@FreeBSD.org> To: Andriy Gapon X-Mailer: Apple Mail (2.3096.5) X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrBLMWRmVeSWpSXmKPExsUi2FAYocuQYBVm8L/BxmLSq052iw872pkc mDxmfJrPEsAYxWWTkpqTWZZapG+XwJXxddITpoJDzBVN8y6zNjAeZOpi5OSQEDCRWPrrIpQt JnHh3nq2LkYuDiGBvYwSK+7fhyv6tfk1K0RiOpPEjYn/WEASzAJaEjf+vQQr4hUwkGi7eoYR xBYWUJCYtWofUJyDg01ATWLCRB6QMKeAtsS3P4eYQWwWARWJW2vfg5UwC5hL/LhhDjFRXmL7 2znMEBOtJCYemMYOYgsBbbq06hxYXERASWL+foi4BFD9z5UNUGe+ZZVYspZ9AqPQLCTHzUJy 3CwkKxYwMq9iFMpNzMzRzcwz00ssKMhJ1UvOz93ECAra6XaiOxjPrLI6xCjAwajEw3uD0TJM iDWxrLgy9xCjNAeLkjhvVJRVmJBAemJJanZqakFqUXxRaU5q8SFGJg5OqQbGN/5lC8x0fpxa +VblVYvI08YPD9jf99zNsCpRubV+lqLyxXOJqitXMLK0/YngWq7ssqE07+tbbd//lzU2OAdp CNz8X63Edene17pq19+p0stXMMVJq22+LHixovTf+Tw9UcNzK710ChuCj0uLvF3TsZLjx7d2 eZbT3Uorfkc5cf0WEKrnDvRQYinOSDTUYi4qTgQANlq/QDsCAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprDLMWRmVeSWpSXmKPExsUiOPVRti5DglWYwZ/3lhaTXnWyW3zY0c7k wOQx49N8lgDGKC6blNSczLLUIn27BK6Mr5OeMBUcYq5omneZtYHxIFMXIyeHhICJxK/Nr1kh bDGJC/fWs3UxcnEICUxnkrgx8R8LSIJZQEvixr+XYA28AgYSbVfPMILYwgIKErNW7QOKc3Cw CahJTJjIAxLmFNCW+PbnEDOIzSKgInFr7XuwEmYBc4kfN8whJspLbH87hxliopXExAPT2EFs IaBNl1adA4uLCChJzN8PEZcAqv+5soFpAiP/LCQHzUJy0CwkYxcwMq9iFChKzUmsNNVLLCjI SdVLzs/dxAgKs4bCiB2M/5dZHWIU4GBU4uG9wWgZJsSaWFZcmXuIUYKDWUmEd56yVZgQb0pi ZVVqUX58UWlOavEhRmkOFiVx3tKt5mFCAumJJanZqakFqUUwWSYOTqkGxnsLXwn3r8j4y/P2 yj3zeLbkVc1Hyvedqwg8WXb887xPIbOMj36Rm7V2/rrPR31el9YyO3blyyoLJS3bJvm5rf7W A1HPqXbLZyUfluph9P7fI2OZeuLsN65Lp1TbD7XJRcg+3aC43kNvgQyv8INjz6dMYq+YcyJO 3rhr9skj74W/fSwM3Pxzlb0SS3FGoqEWc1FxIgA5jUIfLwIAAA== X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Nov 2015 19:44:08 -0000 On Nov 4, 2015, at 11:40 AM, Andriy Gapon wrote: > $ sockstat -l | fgrep 631 > ? ? ? ? tcp4 127.0.0.1:631 *:* > > $ nc -l 127.0.0.1 631 > nc: Address already in use That's the IPP port, commonly grabbed by CUPS and other printing software: % grep 631 /etc/services | head -2 ipp 631/tcp # Internet Printing Protocol ipp 631/udp # Internet Printing Protocol Regards, -- -Chuck