Re: [pcp] Comparison of PCP authentication

Margaret Wasserman <mrw@lilacglade.org> Thu, 09 August 2012 19:21 UTC

Return-Path: <mrw@lilacglade.org>
X-Original-To: pcp@ietfa.amsl.com
Delivered-To: pcp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4D18B21F8736 for <pcp@ietfa.amsl.com>; Thu, 9 Aug 2012 12:21:26 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -95.677
X-Spam-Level:
X-Spam-Status: No, score=-95.677 tagged_above=-999 required=5 tests=[AWL=0.034, BAYES_00=-2.599, FH_HELO_EQ_D_D_D_D=1.597, FH_HOST_EQ_D_D_D_D=0.765, FM_DDDD_TIMES_2=1.999, HELO_DYNAMIC_IPADDR=2.426, HTML_MESSAGE=0.001, RDNS_DYNAMIC=0.1, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id upwU26tuuIJx for <pcp@ietfa.amsl.com>; Thu, 9 Aug 2012 12:21:25 -0700 (PDT)
Received: from ec2-23-21-76-251.compute-1.amazonaws.com (ec2-23-21-227-93.compute-1.amazonaws.com [23.21.227.93]) by ietfa.amsl.com (Postfix) with ESMTP id D242A21F86FC for <pcp@ietf.org>; Thu, 9 Aug 2012 12:21:25 -0700 (PDT)
Received: from lilac-too.home (permutation-city.suchdamage.org [69.25.196.28]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (Client did not present a certificate) by mail.suchdamage.org (Postfix) with ESMTPSA id 8E3CC202A6; Thu, 9 Aug 2012 15:21:24 -0400 (EDT)
Mime-Version: 1.0 (Apple Message framework v1084)
Content-Type: multipart/alternative; boundary="Apple-Mail-4--986818603"
From: Margaret Wasserman <mrw@lilacglade.org>
In-Reply-To: <054001cd765d$54c0f3e0$fe42dba0$@com>
Date: Thu, 09 Aug 2012 15:21:25 -0400
Message-Id: <0F259BA1-CEFF-4346-AFE5-3D33BB0CF0CC@lilacglade.org>
References: <9B57C850BB53634CACEC56EF4853FF653B6EC381@TK5EX14MBXW604.wingroup.windeploy.ntdev.microsoft.com> <7FE144CF-00E3-4451-8CBE-A6A684DB7CC4@yegin.org> <067d01cd73fd$765a6c50$630f44f0$@com> <D6D2DEED-C35A-45AB-8B72-96195C308DB9@yegin.org> <57FF0F8E-1B86-410F-8B6B-C4893A28222F@lilacglade.org> <BB72B80F-0622-4A5B-A985-79D8AED13E0B@apple.com> <003b01cd7587$a111b760$e3352620$@com> <15990E87-2D59-49B1-845C-2A4CB5A1FBD6@lilacglade.org> <008801cd758f$3fd306e0$bf7914a0$@com> <C72CBD9FE3CA604887B1B3F1D145D05E2CE65225@szxeml528-mbx.china.huawei.com> <028801cd75d6$c5765490$5062fdb0$@com> <tsla9y4gptp.fsf@mit.edu> <04c901cd7658$37a740c0$a6f5c240$@com> <tslboikexlv.fsf@mit.edu> <054001cd765d$54c0f3e0$fe42dba0$@com>
To: Dan Wing <dwing@cisco.com>
X-Mailer: Apple Mail (2.1084)
Cc: pcp@ietf.org
Subject: Re: [pcp] Comparison of PCP authentication
X-BeenThere: pcp@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: PCP wg discussion list <pcp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/pcp>, <mailto:pcp-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/pcp>
List-Post: <mailto:pcp@ietf.org>
List-Help: <mailto:pcp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/pcp>, <mailto:pcp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 09 Aug 2012 19:21:26 -0000

On Aug 9, 2012, at 2:32 PM, Dan Wing wrote:
>> 
>> If I'm updating security policy on a firewall I want to be able to
>> audit whether that actually happened.  That requires authentication.
> 
> You are saying a PCP client would only want to update firewall policies 
> if the PCP server supports authentication, otherwise it would tell the
> user that it cannot enable the webcam, Internet-connected NAS, 
> Internet-connected printer, etc.?

I wont presume to guess what Sam is thinking...

However, I am thinking that there will be some clients  that are configured to perform authentication for every request.  For example, there is no reason for a PCP proxy, running in an environment where authentication is required to do a THIRD-PARTY request, to perform a useless round-trip for every THIRD-PARTY request it issues.  

Margaret