[cisco-voip] Rate-limit voice calls by callerID?

[Brian Meade]

Audiocodes looks to dynamically block IP addresses, but not phone numbers.
May be worth a call to them to confirm.

On Tue, Sep 25, 2018 at 9:49 AM Ed Leatherman <ealeatherman at gmail.com>
wrote:

> Hi Kent,
>
> That's not a bad idea to handle the calling numbers we know about, thanks
> for the tip. I'm trying to figure out something more generic for when they
> start picking new numbers so that it doesn't require manual intervention.
>
> On Mon, Sep 24, 2018 at 4:40 PM Kent Roberts <kent at fredf.org> wrote:
>
>> Create a dial peer on cube to match the calling number, then use the call
>> limits in the dial peer to limit the number.
>>
>> Don’t forget to make it a lower preference, then your main ones, or it
>> will never hit.    Hunt stop in the dial peer so it doesn’t roll over….
>>
>> Test after hours with your cell phone or something…
>>
>>
>>
>> You could also use a TCL script if you have that knowledge.
>>
>>
>>
>>
>> > On Sep 24, 2018, at 2:12 PM, Ed Leatherman <ealeatherman at gmail.com>
>> wrote:
>> >
>> > Hi everyone,
>> >
>> > This is a shot in the dark here but has anyone seen a product that can
>> rate-limit SIP calls based on the calling party number?
>> >
>> > We've had a few recent incidents where a scammer has put our telephone
>> exchange into their robocall system and blasted us with presumably
>> thousands of call attempts spoofing a government or foreign agency's
>> Washington DC phone number, for example, the VA or the Chinese Embassy.
>> Aside from the nuisance of the robocalls, this crushes our SIP concurrent
>> call paths until I block the number on CUBE. I was thinking if there were a
>> way to rate limit calls from a calling party number that would probably let
>> the legitimate calls in, for the most part, but squelch anything that would
>> DOS us. This doesn't seem to be in the normal CUBE toolset so to speak.
>> >
>> > I'm looking at a company called SecureLogix that might be able to do
>> something like this. Are there any actual SBCs that can handle something
>> like that?
>> >
>> > Any other solutions to this issue?
>> >
>> > --
>> > Ed Leatherman
>> > _______________________________________________
>> > cisco-voip mailing list
>> > cisco-voip at puck.nether.net
>> > https://puck.nether.net/mailman/listinfo/cisco-voip
>>
>>
>
> --
> Ed Leatherman
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>
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