From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([69.77.167.62] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1JFGJm-0008WP-8g for garchives@archives.gentoo.org; Wed, 16 Jan 2008 22:01:06 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 70A4DE0B1F; Wed, 16 Jan 2008 22:01:04 +0000 (UTC) Received: from swarthymail-a3.g.dreamhost.com (lax-green-bigip-5.dreamhost.com [208.113.200.5]) by pigeon.gentoo.org (Postfix) with ESMTP id 4F0F9E0B1F for ; Wed, 16 Jan 2008 22:01:04 +0000 (UTC) Received: from [10.72.42.126] (fw-dip4.burbank.corp.yahoo.com [209.131.61.1]) by swarthymail-a3.g.dreamhost.com (Postfix) with ESMTP id 64B7F7F05D for ; Wed, 16 Jan 2008 14:01:02 -0800 (PST) Message-ID: <478E7E97.3000503@hyperreal.org> Date: Wed, 16 Jan 2008 14:00:55 -0800 From: Mark Rudholm User-Agent: Thunderbird 2.0.0.6 (X11/20070830) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-server@lists.gentoo.org Reply-to: gentoo-server@lists.gentoo.org MIME-Version: 1.0 To: gentoo-server@lists.gentoo.org Subject: Re: [gentoo-server] how to stop tracing References: <478E7674.4020401@ucmd.zapto.org> In-Reply-To: <478E7674.4020401@ucmd.zapto.org> X-Enigmail-Version: 0.95.3 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Archives-Salt: 83804026-57e1-4a44-8aa2-690fca395448 X-Archives-Hash: bc2c1d629990f2ec1d543963850dca09 Christopher Dale wrote: > widyachacra wrote: >> Dear List friends, >> >> When i scan my own domain from an out side host using 'nmap' tool it shows >> following results. How do i block this kind of tracing using linux. Please >> help me. >> >> nmap tracing result, >> >> PORT STATE SERVICE VERSION >> 25/tcp open smtp netqmail smtpd 1.04 >> 53/tcp open domain >> 80/tcp open http Apache httpd 2.2.6 ((Gentoo)) >> 110/tcp open pop3 Courier pop3d >> 119/tcp open ssh OpenSSH 4.7 (protocol 2.0) >> 209/tcp open tam? >> 443/tcp open http Apache httpd 2.2.6 ((Gentoo)) >> 628/tcp open tcpwrapped >> 993/tcp open ssl/imap Courier Imapd (released 2005) >> 995/tcp open ssl/pop3 Courier pop3d >> >> >> > Hi Widyachacra, > > Great question and one that I have had in the past also. In a previous > post to the gentoo mailing list, someone suggested that port knocking be > used as a means of securing through obscurity. After looking at it > (http://www.portknocking.org), I've found that it's a wonderful means to > a personal server's security when exposed to the world wide web. Exposed to the what? -- gentoo-server@lists.gentoo.org mailing list