From owner-freebsd-questions@FreeBSD.ORG Tue Oct 18 17:19:40 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 55DE316A41F for ; Tue, 18 Oct 2005 17:19:40 +0000 (GMT) (envelope-from philipp1@zeus.itg.uiuc.edu) Received: from zeus.itg.uiuc.edu (zeus.itg.uiuc.edu [130.126.126.162]) by mx1.FreeBSD.org (Postfix) with ESMTP id F17BE43D46 for ; Tue, 18 Oct 2005 17:19:39 +0000 (GMT) (envelope-from philipp1@zeus.itg.uiuc.edu) Received: from zeus.itg.uiuc.edu (localhost.localdomain [127.0.0.1]) by zeus.itg.uiuc.edu (8.13.1/8.13.1) with ESMTP id j9IHJcAJ004371 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 18 Oct 2005 12:19:38 -0500 Received: (from philipp1@localhost) by zeus.itg.uiuc.edu (8.13.1/8.13.1/Submit) id j9IHJcov004370 for freebsd-questions@freebsd.org; Tue, 18 Oct 2005 12:19:38 -0500 Date: Tue, 18 Oct 2005 12:19:38 -0500 From: Anthony Philipp To: freebsd-questions@freebsd.org Message-ID: <20051018171938.GB2305@zeus.itg.uiuc.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.1i Subject: possible breakin attempt? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Oct 2005 17:19:40 -0000 Hello, In my daily emails from my box I noticed this: Oct 17 16:13:03 lupin sshd[51861]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:05 lupin sshd[51863]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:08 lupin sshd[51865]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:21 lupin sshd[51869]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:21 lupin sshd[51867]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:30 lupin sshd[51873]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:32 lupin sshd[51875]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:34 lupin sshd[51871]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:37 lupin sshd[51877]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:37 lupin sshd[51879]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:40 lupin sshd[51881]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:43 lupin sshd[51883]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! Oct 17 16:13:55 lupin sshd[51885]: reverse mapping checking getaddrinfo for 211-234-119-139.kidc.net failed - POSSIBLE BREAKIN ATTEMPT! I was just wondering exactly how dangerous this is, and what I can do about it. Thanks for any additional help! Anthony