From owner-freebsd-security Sun Apr 2 20:54:54 2000 Delivered-To: freebsd-security@freebsd.org Received: from mta01.onebox.com (mta01.onebox.com [216.33.158.208]) by hub.freebsd.org (Postfix) with ESMTP id 623C137B5D4 for ; Sun, 2 Apr 2000 20:54:52 -0700 (PDT) (envelope-from chutima_s@zdnetonebox.com) Received: from onebox.com ([216.33.158.158]) by mta01.onebox.com (InterMail vM.4.01.02.17 201-229-119) with SMTP id <20000403035452.VVHA21091.mta01.onebox.com@onebox.com> for ; Sun, 2 Apr 2000 20:54:52 -0700 Received: from [203.107.232.70] by onebox.com with HTTP; Sun, 02 Apr 2000 20:54:52 -0800 Date: Sun, 02 Apr 2000 20:54:52 -0800 Subject: How to deal with intruder? From: "Chutima S." To: freebsd-security@FreeBSD.ORG Message-Id: <20000403035452.VVHA21091.mta01.onebox.com@onebox.com> Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Dear all, I'm a new internet admin. I found in security check output routine that many people try to connect to my server: Mar 3 18:56:45 mail inetd[2409]: refused connection from p62-bkkSP1.C.loxinfo.net.th, service popper (tcp) Mar 3 18:58:05 mail inetd[2411]: refused connection from p62-bkkSP1.C.loxinfo.net.th, service tcpd (tcp) Mar 3 18:59:11 mail inetd[2412]: refused connection from p62-bkkSP1.C.loxinfo.net.th, service popper (tcp) Mar 3 19:01:38 mail inetd[2426]: refused connection from p62-bkkSP1.C.loxinfo.net.th, service popper (tcp) Mar 3 19:11:32 mail inetd[2439]: refused connection from p62-bkkSP1.C.loxinfo.net.th, service popper (tcp) Mar 3 19:21:33 mail inetd[2451]: refused connection from p62-bkkSP1.C.loxinfo.net.th, service popper (tcp) Mar 17 12:48:14 mail inetd[32549]: refused connection from 210.71.232.99, service tcpd (tcp) Mar 17 12:48:16 mail inetd[32551]: refused connection from 210.71.232.99, service tcpd (tcp) Mar 18 10:40:24 mail inetd[34770]: refused connection from l238ppp099.ksc.net.th, service tcpd (tcp) Mar 18 10:40:24 mail inetd[34771]: refused connection from l238ppp099.ksc.net.th, service tcpd (tcp) Mar 18 10:40:24 mail inetd[34772]: refused connection from l238ppp099.ksc.net.th, service tcpd (tcp) Mar 18 10:40:24 mail inetd[34773]: refused connection from l238ppp099.ksc.net.th, service tcpd (tcp) Mar 18 10:41:27 mail inetd[34775]: refused connection from l238ppp099.ksc.net.th, service tcpd (tcp) Mar 18 10:41:41 mail inetd[34777]: refused connection from l238ppp099.ksc.net.th, service tcpd (tcp) Apr 2 14:48:11 mail inetd[69483]: refused connection from root@203.107.227.2, service tcpd (tcp) Apr 2 14:48:11 mail inetd[69484]: refused connection from root@203.107.227.2, service tcpd (tcp) That really scare me!!! I don't know how to deal with them. So I want your advice for : 1. Should I try to contact anybody(admin at those server)? 2. How can I trace them back to know are they? Thank you, -- Chutima Subsirin chutima_s@zdnetonebox.com - email ___________________________________________________________________ To get your own FREE ZDNet Onebox - FREE voicemail, email, and fax, all in one place - sign up today at http://www.zdnetonebox.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message