From owner-freebsd-current Tue Dec 19 11: 4:19 2000 From owner-freebsd-current@FreeBSD.ORG Tue Dec 19 11:04:16 2000 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from cae88-102-101.sc.rr.com (cae88-102-101.sc.rr.com [24.88.102.101]) by hub.freebsd.org (Postfix) with ESMTP id 993F537B400 for ; Tue, 19 Dec 2000 11:04:15 -0800 (PST) Received: (from dmaddox@localhost) by cae88-102-101.sc.rr.com (8.11.1/8.11.1) id eBJJ4OL01638; Tue, 19 Dec 2000 14:04:24 -0500 (EST) (envelope-from dmaddox) Date: Tue, 19 Dec 2000 14:04:24 -0500 From: "Donald J . Maddox" To: Hasan Azam Diwan Cc: dmaddox@sc.rr.com, current@FreeBSD.ORG Subject: Re: Interesting new messages in logs Message-ID: <20001219140424.A1572@cae88-102-101.sc.rr.com> Reply-To: dmaddox@sc.rr.com Mail-Followup-To: Hasan Azam Diwan , dmaddox@sc.rr.com, current@FreeBSD.ORG References: <200012191851.NAA14078@cs.rpi.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200012191851.NAA14078@cs.rpi.edu>; from diwanh@cs.rpi.edu on Tue, Dec 19, 2000 at 01:51:04PM -0500 Return-Receipt-To: dmaddox@sc.rr.com Sender: dmaddox@cae88-102-101.sc.rr.com Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG You're right that the answer to my question was IPV6 (I didn't have it compiled into the previous kernel). You're wrong that a port need not be open to receive connections. You will note in the log excerpt below that these are connection *attempts*, not actual connections. On Tue, Dec 19, 2000 at 01:51:04PM -0500, Hasan Azam Diwan wrote: > To answer your first question, a port need not be open in order to receive > connections. To answer your second, these appear to be IPv4 addresses > encapsulated as IPv6 addresses. > > Dec 19 12:21:04 cae88-102-101 /boot/kernel/kernel: Connection attempt to TCP > > ::0001:25 from ::0001:1286 > > Dec 19 12:24:08 cae88-102-101 /boot/kernel/kernel: Connection attempt to TCP > > ::0001:25 from ::0001:1299 > > Dec 19 12:27:13 cae88-102-101 /boot/kernel/kernel: Connection attempt to TCP > > ::0001:25 from ::0001:1308 > > Dec 19 12:39:28 cae88-102-101 /boot/kernel/kernel: Connection attempt to TCP > > ::0001:25 from ::0001:1336 > > Obviously, this machine is using log_in_vain, and it appears obvious > > that these are local smtp transactions. It is _not_ obvious, at > > least to me, why they are now being logged as if port 25 was not > > open. Also, why the odd format in the addresses? > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message