From owner-freebsd-hackers Fri Feb 26 8: 5:17 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from mail.palmerharvey.co.uk (mail.palmerharvey.co.uk [62.172.109.58]) by hub.freebsd.org (Postfix) with ESMTP id 7377114F5B for ; Fri, 26 Feb 1999 08:05:04 -0800 (PST) (envelope-from Dom.Mitchell@palmerharvey.co.uk) Received: from ho-nt-01.pandhm.co.uk (unverified) by mail.palmerharvey.co.uk (Content Technologies SMTPRS 2.0.15) with ESMTP id ; Fri, 26 Feb 1999 16:04:57 +0000 Received: from voodoo.pandhm.co.uk ([10.100.35.12]) by ho-nt-01.pandhm.co.uk with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2448.0) id FSG3LDKQ; Fri, 26 Feb 1999 15:58:59 -0000 Received: from dom by voodoo.pandhm.co.uk with local (Exim 2.10 #1) id 10GPnD-0005M1-00; Fri, 26 Feb 1999 16:07:11 +0000 To: Robert Hough Cc: hackers@FreeBSD.ORG Subject: Re: FreeBSD & Sendmail X-Mailer: nmh-1.0 X-Colour: Green Organization: Palmer & Harvey McLane In-Reply-To: Robert Hough's message of "Fri, 26 Feb 1999 10:53:49 EST" <199902261552.KAA16033@zoe.iserve.net> Date: Fri, 26 Feb 1999 16:07:11 +0000 From: Dom Mitchell Message-Id: Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 26 February 1999, Robert Hough proclaimed: > Does anyone know what this message means? I've got like 2-3 people with > this problem, and cant seem to figure out what it is. > > NOQUEUE: Null connection from cthulu.iserve.net [207.250.219.24] It's probably a port-scan. What has happened is that some port scanning tool (say nmap, in the ports collection) has connected and disconnected immediately to your host without actually sending any data down the connection. If you set up yuor inetd to enable logging (-l option?), then you will probably find these types of port scans easier to pick up from your logs. -- Dom Mitchell -- Palmer & Harvey McLane -- Unix Systems Administrator Free your mind -- http://www.opensource.org/ -- ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. ********************************************************************** To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message