From owner-freebsd-stable Tue Oct 10 10:28:35 2000 Delivered-To: freebsd-stable@freebsd.org Received: from sj-msg-core-1.cisco.com (sj-msg-core-1.cisco.com [171.71.163.11]) by hub.freebsd.org (Postfix) with ESMTP id 22E9C37B502 for ; Tue, 10 Oct 2000 10:28:33 -0700 (PDT) Received: from mira1.cisco.com (mira1.cisco.com [171.71.208.193]) by sj-msg-core-1.cisco.com (8.9.3/8.9.1) with ESMTP id KAA11351; Tue, 10 Oct 2000 10:28:59 -0700 (PDT) Received: from cisco.com (sjck-dial-gw5-9.cisco.com [10.19.238.10]) by mira1.cisco.com (Mirapoint) with ESMTP id ABP06295; Tue, 10 Oct 2000 10:28:30 -0700 (PDT) Message-ID: <39E35008.49896754@cisco.com> Date: Tue, 10 Oct 2000 10:21:12 -0700 From: W Gerald Hicks Organization: Cisco Systems, Inc. X-Mailer: Mozilla 4.75 [en] (X11; U; FreeBSD 4.1.1-STABLE i386) X-Accept-Language: en MIME-Version: 1.0 To: Vivek Khera Cc: stable@FreeBSD.ORG Subject: Re: effective use of serial console References: <14817.64539.984808.362682@yertle.kciLink.com> <14819.9533.141056.968810@onceler.kciLink.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Vivek Khera wrote: > > >>>>> "JvR" == Janko van Roosmalen writes: > > JvR> I have read somewhere that the classic trick is to add an user to > JvR> your system with "shutdown" as login shell. > > But if your system is not responding to logins, it won't help you. > That's about the only time you'd use ctrl-alt-del on a physical > console too. For example, your proc table is full or some other DoS > attack is going on. > I recall David Greenman's "old modem" hack, where one uses the hook relay to control the power or reset circuit of the remote system. It's described in detail somewhere in the mail archives Cheers, Jery Hicks gehicks@cisco.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message