From owner-freebsd-security@FreeBSD.ORG Sat Jul 12 15:46:04 2003 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7352837B401 for ; Sat, 12 Jul 2003 15:46:04 -0700 (PDT) Received: from hawk.mail.pas.earthlink.net (hawk.mail.pas.earthlink.net [207.217.120.22]) by mx1.FreeBSD.org (Postfix) with ESMTP id 101FD43F85 for ; Sat, 12 Jul 2003 15:46:04 -0700 (PDT) (envelope-from vjones62@earthlink.net) Received: from scooter.psp.pas.earthlink.net ([207.217.78.185]) by hawk.mail.pas.earthlink.net with esmtp (Exim 3.33 #1) id 19bT7x-0001Kh-00 for freebsd-security@freebsd.org; Sat, 12 Jul 2003 15:46:01 -0700 Received: from [207.217.78.11] by EarthlinkWAM via HTTP; Sat Jul 12 15:46:01 PDT 2003 Message-ID: <3083978.1058049961635.JavaMail.nobody@scooter.psp.pas.earthlink.net> Date: Sat, 12 Jul 2003 18:43:26 -0700 (PDT) From: "V. Jones" To: freebsd-security@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Earthlink Web Access Mail version 3.0 Subject: jails, ipfilter & stunnel X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Security issues [members-only posting] List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jul 2003 22:46:04 -0000 I'm setting up a server where I plan to use Jails to improve security I also have installed and am configuring ipfilter. Here are my questions: Because I'm using Jails, I will have to have multiple ip aliases on the network interface. I will use ipfilter to specify what can go to each of the addresses. (e.g., allow only incoming to port 80 on the jail running apache). Another jailed server will run mail services (pop, smtp, imap). If I want to allow users to use web based email(over ssl of course), the web server will have to communicate with the mail server. Is there a chance of "information leakage" in this type of setup? Finally, I'd like to use SSL to offer secure web connections & secure email without having to buy two certificates. Am I getting too cute if I accept ssl connections on one ip address and use stunnel to route them to the appropriate jailed server?