From owner-freebsd-questions@FreeBSD.ORG Tue Aug 10 04:02:21 2010 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 74E241065673 for ; Tue, 10 Aug 2010 04:02:21 +0000 (UTC) (envelope-from oscartheduck@gmail.com) Received: from mail-pv0-f182.google.com (mail-pv0-f182.google.com [74.125.83.182]) by mx1.freebsd.org (Postfix) with ESMTP id 4456B8FC12 for ; Tue, 10 Aug 2010 04:02:21 +0000 (UTC) Received: by pvg4 with SMTP id 4so1140444pvg.13 for ; Mon, 09 Aug 2010 21:02:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:subject:mime-version :content-type:from:x-priority:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to:x-mailer; bh=WzV+oTgus0bUFUmhzdy675Z6td4wlJNAPQ2vUTWhXjA=; b=ONHIkkTd0qee5aNv3QGWGFlBeANDtVt1jMoqYshYpZeogz0ynNY2OfGClxK1SbVKGV AwGIRm0IqI3OqkOLz0nuz1tD4jo16qR/QeSRpd+U5RXiLxYsvmbDMVfTH9yNLFa2PXEy W+wKQPpR4xrXKbWwRfi1QnuonW8YC+ZBfUxSg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:mime-version:content-type:from:x-priority:in-reply-to:date :cc:content-transfer-encoding:message-id:references:to:x-mailer; b=GlpuTOMEPJghQEFNcuBGI4y8G3tiEyNgLciCsSA2WaXcuSy/27+RDbYiZQifxALuSw 3hHWpne9QU5iEf+DKd2dSCfTlk2GBBU/nAx8wO669Y6CR7OaW7DMeih89Dan0BSfS/va +q2F9MOVoweSh8HTKWjTPz6jlzicwxYLBELkA= Received: by 10.142.147.20 with SMTP id u20mr14489539wfd.49.1281411187101; Mon, 09 Aug 2010 20:33:07 -0700 (PDT) Received: from [192.168.1.2] (c-24-8-211-143.hsd1.co.comcast.net [24.8.211.143]) by mx.google.com with ESMTPS id w8sm7249168wfd.7.2010.08.09.20.33.05 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 09 Aug 2010 20:33:05 -0700 (PDT) Mime-Version: 1.0 (Apple Message framework v1081) Content-Type: text/plain; charset=us-ascii From: James Harrison X-Priority: 3 In-Reply-To: Date: Mon, 9 Aug 2010 21:33:03 -0600 Content-Transfer-Encoding: quoted-printable Message-Id: References: To: "Matt Emmerton" X-Mailer: Apple Mail (2.1081) Cc: questions@freebsd.org Subject: Re: ssh under attack - sessions in accepted state hogging CPU X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Aug 2010 04:02:21 -0000 Hi Matt, >=20 > I know there's not much I can do about the brute force attacks, but = will upgrading openssh avoid these stuck connections? 1. switch over to using solely RSA keys 2. switch to a non-standard port 3. what version of openssh are you currently using? Best James=