From owner-freebsd-security Sun Mar 18 14: 8:17 2001 Delivered-To: freebsd-security@freebsd.org Received: from yang.earlham.edu (yang.earlham.edu [159.28.1.1]) by hub.freebsd.org (Postfix) with ESMTP id 3138D37B719 for ; Sun, 18 Mar 2001 14:08:13 -0800 (PST) (envelope-from marouni@earlham.edu) Received: from earlham.edu (IDENT:odysseus@tropical.student.earlham.edu [159.28.163.208]) by yang.earlham.edu (8.9.3/8.9.3) with ESMTP id QAA27806 for ; Sun, 18 Mar 2001 16:40:59 -0500 Message-ID: <3AB52B88.A09A4003@earlham.edu> Date: Sun, 18 Mar 2001 16:41:28 -0500 From: Nicholas Marouf Reply-To: marouni@earlham.edu Organization: http://www.RamallahOnline.com X-Mailer: Mozilla 4.75 [en] (X11; U; Linux 2.2.17-21mdk i686) X-Accept-Language: en MIME-Version: 1.0 To: "security FreeBSD.ORG" Subject: Blocking an IP addrress Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Greetings, We've been getting many sendmail connections from 199.45.164.216 and is causing sendmail to stop. This looks like a DOS however the admin of that server says that sendmail on their side is sending mail out in bacthes, and that they are taking a look into it. But either way we would like to block it. I've added deny all in hosts.allow for that ip Also added in the access file REJECT for that ip address. Those two still do not make a difference since connections keep on opening up. I've been trying to get ipfw to block it. but I get this error message. Any advice would be much appreciated. su-2.04# ps ax | grep sendmail 16180 ?? Ss 0:00.02 sendmail: accepting connections (sendmail) 16250 ?? S 0:00.03 sendmail: startup with 199.45.164.216 (sendmail) 16337 ?? I 0:00.00 sendmail: startup with 199.45.164.216 (sendmail) 16344 p2 R+ 0:00.00 grep sendmail Thanks again.. Nick -- Nicholas Marouf || Student System Administrator http://www.ramallahonline.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message