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

[Ed Leatherman]

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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