[apps-discuss] call blocking was Re: Mail client configuration via WebFinger

t.petch <ietfc@btconnect.com> Tue, 09 February 2016 11:10 UTC

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From: t.petch <ietfc@btconnect.com>
To: Phillip Hallam-Baker <ietf@hallambaker.com>
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Cc: General discussion of application-layer protocols <apps-discuss@ietf.org>
Subject: [apps-discuss] call blocking was Re: Mail client configuration via WebFinger
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----- Original Message -----
From: "Phillip Hallam-Baker" <ietf@hallambaker.com>
To: "John C Klensin" <john-ietf@jck.com>
Sent: Monday, February 08, 2016 7:56 PM
> On Mon, Feb 8, 2016 at 2:26 PM, John C Klensin <john-ietf@jck.com>
wrote:
> > Cyrus,
> >
> > Thanks for stepping in on this.  A few comments and
> > clarifications below...
> >
> > --On Monday, February 08, 2016 09:54 -0500 Cyrus Daboo
> > <cyrus@daboo.name> wrote:
>
<snip>
> I agree with John's conclusion but with an older argument. Namely that
> people have tried to use DNS for account type information since
> RFC1035 was published and none have been successful.
>
> In my view, the DNS is the Infrastructure that maps DNS names onto
> current descriptions of services. So extending the use of the DNS for
> DANE like purposes with respect to TLS is certainly within scope of
> the DNS. Attempting to use the DNS for account based information has
> consistently failed.
>
> John's raising of the privacy argument seems to me to be the capstone
> of this argument because all of the reasons people have given me for
> not making information in LDAP or X.500 directories publicly
> accessible are essentially privacy arguments. The concern that head
> hunters would use the company directory to cold call people is a form
> of privacy argument.
>
> The reason I thought I would flag this is that if we are going to
> build such an infrastructure, we should probably start from the idea
> that privacy is a paramount concern and plan accordingly.
>
> I do have some code that might be relevant to this problem in the
> Mathematical Mesh but it is not a problem that I have considered
> except in the abstract so far.
>
> It seems to me that any mechanism that would allow contact information
> to be shared would have to leverage two separate principals
>
> 1) Social media style 'friend' links
> 2) Progressive disclosure (aka kimono protocol).
>
> My email information is online but not my telephone number. I really,
> really want to get rid of the telephone number ASAP because I am
> getting half a dozen spam calls a day now. Even with nomorobo in
> place, each spam call still causes one ring and that is starting to be
> a hassle.

Phillip

I have a CallBlocker which suppresses all rings, and the difference it
makes is magic.  The phone still logs a call, giving time, number and a
flashing red light which I notice only when I am willing to be
interrrupted.  The box is American so I imagine it will work with half
the world's networks.

The weakness is the lack of data entry, not even a web interface, so I
cannot add numbers to its directory except by catching a call and
pressing a button while it is in progress so I am still hassled by those
that ring when I am out and fill up my VoiceMail.

And, crooks are smarter than phone companies so they are now using
forged source addresses - no RPF for the phone - to bypass the blocks so
the effectiveness of the blocking is diminishing.  Thank heavens for
e-mail (even if I have to configure it:-).

Tom Petch

>
<snip>