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Re: [Ecrit] emergency access and EAP-TLS (and denial of serviceattacks o

Subject: Re: [Ecrit] emergency access and EAP-TLS and denial of serviceattacks on the emergency.com domain
From: "Dawson, Martin"
Date: Wed, 24 Mar 2010 06:43:55 +0800
To elaborate on Brian's "counter point" - some jurisdictions may prefer to 
*forbid* access to the emergency service from unauthenticated/anonymous access 
as opposed to *require* it to be supported. Noting this is the equivalent of 
saying emergency calls for circuit service cannot be made from public phone 
booths; this is still a possible policy within a given jurisdiction.

I'd also posit that not only is it not a priority for IETF but that the 
question actually needs to be dealt with in more specific forums first. The 
ECRIT emergency procedures occur at or above the IP layer. Before anything that 
ECRIT describes becomes relevant, there needs to be an IP context.

So - it's more the domain of the IEEE, 3GPP, WiFi Alliance, the DSL forum, etc. 
as to how a device is able to get an unauthenticated IP context on their 
technology, for whatever purpose, before the policies on permitting/prohibiting 
ECRIT procedures or anything else that can be done on IP can be applied. This 
is easier on some access technologies than it is on others. I doubt that 
there's a reasonable assumption that the connecting device can necessarily 
provide an explicit "emergency intent" flag.


-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Brian 
Sent: Wednesday, 24 March 2010 8:29 AM
To: Thomson, Martin; Richard Barnes; Bernard Aboba
Cc: [email protected]; [email protected]
Subject: Re: [Ecrit] emergency access and EAP-TLS (and denial of serviceattacks 
on the emergency.com domain)

I think the relevant part of this is 'it's not a high priority'.  That is
policy of the work group, which we do have control over.

If we have nothing else more important to do, then by all means, let's waste
a ton of time on unauthenticated access.  If we have other work to do,
perhaps we could defer this.

I am not the chair, but in general, anyone can discuss anything, regardless
of "priority" on the list.  However, when it comes to adopting work group
items, I think this should be way down our list.

I might also suggest that unauthenticated access really isn't within the
charter of the work group.  It may be that the reason unauthenticated access
may be needed is for emergency calling, but that means we may (eventually)
need to ask some other work group to do work for a requirement we generate.
It would seem that dealing with EAP is not within the domain of this work


On 3/23/10 5:14 PM, "Thomson, Martin" <[email protected]> wrote:

>> A large percentage (in fact an overwhelming percentage) of PSAPs DON'T
>> unauthenticated access.  Their position is that they have lots of
>> relevant
>> experience, and its all bad (tens of thousands of calls with no good
>> ones in
>> some cases).
>> However, there are some PSAPs who want it, and there are some
>> regulatory
>> environments where there are some lawyers who think it's required to
>> support
>> it in some environments.
> The good thing is: we don't set policy here.  I'm not seeing sufficient
> evidence that _everyone_ doesn't want this, only that some don't want this.
> I can't comment on priority.  That would be policy too.
> --Martin

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