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I don't get why the phone companies don't implement something akin to bogon filtering on their interconnect points. If the incoming call or txt has an internal
by NickNameNick 7y ago
I don't get why the phone companies don't implement something akin to bogon filtering on their interconnect points.
If the incoming call or txt has an internal source number, but is coming from an external network, reject it. If its an outgoing session with an external source, drop it and follow up with the account holder.
https://en.wikipedia.org/wiki/Bogon_filtering https://en.wikipedia.org/wiki/Bogon_filtering
- tgsovlerkhgsel 7y agoThis would be problematic e.g. in the case of ported numbers, or if a customer is using a third party to send their SMS for a fraction of the cost. Implementing such blocks without covering these use cases would likely (rightfully) result in antitrust issues.
- LinuxBender 7y agoA similar concept applies in the SS7 [1] network, B-number [2] analysis, but is not used that way, as telco's have no way to properly manage which switches may originate which numbers as they are portable. They just do routing and trust the sender is allowed to have the number presented in the SS7 packet. [1] - https://en.wikipedia.org/wiki/Signalling_System_No._7 https://en.wikipedia.org/wiki/Signalling_System_No._7 [2] - https://en.wikipedia.org/wiki/Called_party https://en.wikipedia.org/wiki/Called_party