Date: Tue, 19 Dec 2000 14:04:24 -0500 From: "Donald J . Maddox" <dmaddox@sc.rr.com> To: Hasan Azam Diwan <diwanh@cs.rpi.edu> 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> In-Reply-To: <200012191851.NAA14078@cs.rpi.edu>; from diwanh@cs.rpi.edu on Tue, Dec 19, 2000 at 01:51:04PM -0500 References: <dmaddox@sc.rr.com> <200012191851.NAA14078@cs.rpi.edu>
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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
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