Re: [IPsec] Fw: New Version Notification for draft-smyslov-ipsecme-ikev2-null-auth-01.txt

Paul Wouters <paul@cypherpunks.ca> Mon, 03 March 2014 22:57 UTC

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Date: Mon, 3 Mar 2014 17:57:33 -0500 (EST)
From: Paul Wouters <paul@cypherpunks.ca>
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To: Tero Kivinen <kivinen@iki.fi>
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Cc: "ipsec@ietf.org WG" <ipsec@ietf.org>, Valery Smyslov <svanru@gmail.com>
Subject: Re: [IPsec] Fw: New Version Notification for draft-smyslov-ipsecme-ikev2-null-auth-01.txt
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On Mon, 3 Mar 2014, Tero Kivinen wrote:

> It would be better to say that if you are sending empty ID payload,
> you msut use ID_KEY_ID type which already allows any data, including
> empty.

That could work, if we really don't want to allow this document to
change the ID payload from mandatory to optional (which I would prefer)

> Actually I now noticed you changed the "SHOULD be ignored" to "MUST be
> ignored", and I think that is again bad idea. I think logging and
> auditing the ID for problem solving purposes is good idea even if it
> does not have any meaning for the authentication. I.e. at least then I
> can contact helpdesk and say that my NULL authentication connection to
> server 1.2.3.4 failed, and I have no idea why, can you help. Oh, my ID
> payload had ID_KEY_ID 0324234mkdsff43r5, if that helps you to find it
> from your logs...

I disagree strongly. The point here is that the client is anonymous. We
should not add things that can be traced to a user. Someone will badly
abuse this "feature" like you are suggesting for "diagnostics" and
inadvertly compromise the client's anonimity.

Paul