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> as it's assumed only trusted parties are on the network and able to use them. Those assumptions are no longer valid Why not refuse to peer with networks that
by bradleyjg 6y ago
> as it's assumed only trusted parties are on the network and able to use them. Those assumptions are no longer valid
Why not refuse to peer with networks that peer/sell to bad actors? Before we had ML based email filters that kind of “hold upstreams responsible” strategy worked pretty well.
- g_p 6y agoThat's one approach, but some operators have SS7 connections to unknown providers. And turning off connections is a great way to discover that a whole host of services (think Twilio etc) suddenly stop working, as they were using some sketchy forgotten-about route into the network. With third party access often "leased" via legitimate-ish providers though, it's hard to really do this without cutting countries or territories loose. Small countries often have operators that give SS7 access, to raise some extra revenue they can't get from their (small and population limited) subscriber-base.
- bradleyjg 6y agoIt may be callous to say but I think most customers would be okay with the trade-off of losing telephone access to some small country that decided to monetize access to global telephony by selling to spammers and scammers, in exchange for not getting those calls.