Hi Kaz,

the deployment experience has been that between gateways, people abuse PSK authentication by using it with short passwords. Even though in principle they could do better.

Thanks,
        Yaron

On 26.3.2010 19:53, Kaz Kobara wrote:
Hi Yaron

Thank you for your clarification.

"between gateways" as opposed to
"between clients and gateways". So your assertion is correct.

(Between gateways, administrators can set long secrets, so the necessity of
PAKE seems smaller than between clients and gateways where passwords are
recorded in the gateways and users have to type the passwords.)

Anyway, if the scope is limited only on "between gateways" but not "between
clients and gateways," the title
"Password-Based Authentication in IKEv2: Selection Criteria and Comparison"
seems misleading (since this itself misinforms that this criteria may be
applied to IKEv2 in any cases), and the above should be clearly mentioned in
the document.

Kaz

-----Original Message-----
From: Yaron Sheffer [mailto:yaronf.i...@gmail.com]
Sent: Friday, March 26, 2010 2:14 PM
To: Kaz Kobara
Cc: ipsec@ietf.org
Subject: Re: [IPsec] New PAKE Criteria draft posted (def. of gateway)

Hi Kaz,

I *thought* my intention was clear: "between gateways" as opposed to
"between clients and gateways". So your assertion is correct.

Thanks,
        Yaron

On 26.3.2010 1:40, Kaz Kobara wrote:
Hi Yaron

draft-sheffer-ipsecme-pake-criteria-02.txt says in Page 4
"This document is limited to the use of password-based authentication
to
achieve trust between gateways"

I would like to make sure that
"gateway" in this document does not encompass VPN clients and hosts,
right?

Kaz

-----Original Message-----
From: ipsec-boun...@ietf.org [mailto:ipsec-boun...@ietf.org] On Behalf
Of
Yaron Sheffer
Sent: Friday, March 26, 2010 3:31 AM
To: SeongHan Shin
Cc: IPsecme WG; Kazukuni Kobara
Subject: Re: [IPsec] New PAKE Criteria draft posted

Hi Shin,

Yes. For the typical remote access VPN, EAP is typically more useful.
Note that there is still need for strong password-based mutual
authentication EAP methods - but their home is the EMU working group.

In addition, the IPsecME has another charter item designed to fit such
EAP methods (such as the future EAP-AugPAKE :-) into IKEv2.

Please see again the group's charter,
http://tools.ietf.org/wg/ipsecme/charters.

Thanks,
        Yaron

On 25.3.2010 20:07, SeongHan Shin wrote:
Dear Yaron Sheffer,

I have one question about the draft.

draft-sheffer-ipsecme-pake-criteria-02.txt says in Page 4
"This document is limited to the use of password-based authentication
to
achieve trust between gateways"

Is this a consensus of this WG?

Best regards,
Shin

On Thu, Mar 25, 2010 at 3:46 PM, Yaron Sheffer<yaronf.i...@gmail.com
<mailto:yaronf.i...@gmail.com>>   wrote:

      Hi,

      after the good discussion in Anaheim, and with the help of
comments
      received on and off the list, I have updated the PAKE Criteria
draft
      and posted it as

http://www.ietf.org/id/draft-sheffer-ipsecme-pake-criteria-02.txt.

      I have added a number of criteria, clarified others, and added
      numbering (SEC1-SEC6, IPR1-IPR3 etc.).

      Thanks,
          Yaron
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