From owner-freebsd-security@FreeBSD.ORG Thu Dec 3 04:23:25 2009 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 06E42106566B for ; Thu, 3 Dec 2009 04:23:25 +0000 (UTC) (envelope-from brett@lariat.net) Received: from lariat.net (lariat.net [66.119.58.2]) by mx1.freebsd.org (Postfix) with ESMTP id 78F218FC13 for ; Thu, 3 Dec 2009 04:23:24 +0000 (UTC) Received: from anne-o1dpaayth1.lariat.net (IDENT:ppp1000.lariat.net@lariat.net [66.119.58.2]) by lariat.net (8.9.3/8.9.3) with ESMTP id VAA04903; Wed, 2 Dec 2009 21:23:08 -0700 (MST) Message-Id: <200912030423.VAA04903@lariat.net> X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Wed, 02 Dec 2009 12:10:47 -0700 To: "Poul-Henning Kamp" , Mike Tancsa From: Brett Glass In-Reply-To: <18401.1259761888@critter.freebsd.dk> References: <18401.1259761888@critter.freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Mailman-Approved-At: Thu, 03 Dec 2009 05:19:35 +0000 Cc: freebsd-security@freebsd.org, Mohd Fazli Azran Subject: Re: Increase in SSH attacks as of announcement of rtld bug X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Dec 2009 04:23:25 -0000 At 06:51 AM 12/2/2009, Poul-Henning Kamp wrote: >A very efficient measure: Move your sshd to another port number. This helps. However, I'd like to try single packet authentication, as it would likely work even better. (It's possible to find an SSH daemon on an unusual port with a port scan.) And it would have the advantage that it could be integrated directly into SSH daemons and clients. --Brett Glass