From owner-freebsd-security Tue Dec 10 23:45:50 1996 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id XAA24720 for security-outgoing; Tue, 10 Dec 1996 23:45:50 -0800 (PST) Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by freefall.freebsd.org (8.8.4/8.8.4) with ESMTP id XAA24712 for ; Tue, 10 Dec 1996 23:45:48 -0800 (PST) Received: (from msmith@localhost) by genesis.atrad.adelaide.edu.au (8.8.2/8.7.3) id SAA23084; Wed, 11 Dec 1996 18:15:26 +1030 (CST) From: Michael Smith Message-Id: <199612110745.SAA23084@genesis.atrad.adelaide.edu.au> Subject: Re: Risk of having bpf0? (was URGENT: Packet sniffer found on my system) In-Reply-To: <199612110716.JAA01999@silver.sms.fi> from Petri Helenius at "Dec 11, 96 09:16:58 am" To: pete@sms.fi (Petri Helenius) Date: Wed, 11 Dec 1996 18:15:25 +1030 (CST) Cc: taob@io.org, freebsd-security@freebsd.org X-Mailer: ELM [version 2.4ME+ PL28 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-security@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Petri Helenius stands accused of saying: > Brian Tao writes: > > What are people's feelings on enabling devices like bpf or snp > > in the kernel on a public server? Obviously, had I not compiled bpf > > into the shell and Web server kernels, this particular incident would > > never have happened. However, I like to have access to tcpdump to > > check for things like ping floods, and trafshow to see where bytes are > > being sent. > > > I think one consideration here is that to run some of the desired > functionality, like dhcpd, you need to have them. Not on a _shell_server_ you don't. If you're in the business of offering shell access (which is fortunately becoming rarer), your shell machines need to be _watertight_, which normally involves removing just about everything. > Pete -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[