FCC will require phone carriers to authenticate calls by June 2021 [pdf]

Re:FCC will require phone carriers to authenticate calls by ... by nkurz on Tuesday March 31, 2020 @09:31PM (#22744748)

This is a nice example of port-knocking: https://wiki.archlinux.org/index.php/Port_knocking.

I wonder if it would be possible to set up something like this more rigorously. Give everyone unrelated two phone numbers. The first never rings the phone. The second only rings if the first was called within the last minute.

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Re:FCC will require phone carriers to authenticate calls by ... by gibspaulding on Tuesday March 31, 2020 @10:30PM (#22745014)

Or perhaps just a pin they have to enter in order to get the first phone to actually ring. Basically 2fa for the right to bother me.

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Re:FCC will require phone carriers to authenticate calls by ... by dvtrn on Tuesday March 31, 2020 @11:41PM (#22745413)

With a creative dialplan design one could do this with a private Asterisk installation (asterisk is behind so many of these cheap disposable phone number/voip providers anyway), though I suppose if one wanted to use someone else’s platform and infrastructure it’d be probably less effort with twilio or plivo

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