From owner-freebsd-security Sun Sep 12 8:20:21 1999 Delivered-To: freebsd-security@freebsd.org Received: from saturn.psn.net (saturn.psn.net [207.211.58.15]) by hub.freebsd.org (Postfix) with ESMTP id 7D14A14D70; Sun, 12 Sep 1999 08:20:14 -0700 (PDT) (envelope-from will@blackdawn.com) Received: from shadow.blackdawn.com (5042-243.008.popsite.net [209.224.140.243]) by saturn.psn.net (8.9.3/8.9.3) with ESMTP id IAA21150; Sun, 12 Sep 1999 08:25:53 -0700 (MST) Received: (from will@localhost) by shadow.blackdawn.com (8.9.3/8.9.3) id LAA96143; Sun, 12 Sep 1999 11:19:59 -0400 (EDT) (envelope-from will) Message-ID: X-Mailer: XFMail 1.3 [p0] on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <19990912012524.B41509@lithium.scientia.demon.co.uk> Date: Sun, 12 Sep 1999 11:19:58 -0400 (EDT) Reply-To: Will Andrews From: Will Andrews To: Ben Smithurst Subject: Re: How to prevent motd including os info Cc: freebsd-security@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG, dev-null@ns1.digicomsystems.net, "Jeremy L. Ramirez" Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On 12-Sep-99 Ben Smithurst wrote: > Jeremy L. Ramirez wrote: > >> telnet stream tcp nowait root /usr/libexec/telnetd telnetd -h >> >> what you are doing is adding the -h at the end of the line which prevents >> a user from seeing the OS before even logging in. > > An even better way is to disable telnet completely, and use ssh like you > should. Note that people can still use nmap or something to guess at > your OS. > > -- > Ben Smithurst | PGP: 0x99392F7D > ben@scientia.demon.co.uk | key available from keyservers and > | ben+pgp@scientia.demon.co.uk > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message