Can rapid fire spam phone calls be blocked by the PA

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L4 Transporter

Can rapid fire spam phone calls be blocked by the PA

Can rapid fire spam phone calls be blocked by the PA, they seem to be similar to a dial of service and they are making it possible for us to make outgoing calls or recieve incoming calls by using all our phone sessions? Is there a way to block them using the PA?

L7 Applicator

Re: Can rapid fire spam phone calls be blocked by the PA

@jdprovine,

This would be better to control at your gateway/SBC instead of the firewall. 

L4 Transporter

Re: Can rapid fire spam phone calls be blocked by the PA

SBC is a session border controller, one other person mentioned it and this is the first time I have ever hear of it. It is specifically for phone systems?

L7 Applicator

Re: Can rapid fire spam phone calls be blocked by the PA

@jdprovine 

Yes, an SBC is generally setup for VoIP and a PBX would generally be either deployed alongside a gateway or act as its own gateway. Whether or not you have one would be dependent on what you are using as a phone system.

L4 Transporter

Re: Can rapid fire spam phone calls be blocked by the PA

We have cisco IP phones, I would think it would be helpful to keep us from getting attacked so to speak

L4 Transporter

Re: Can rapid fire spam phone calls be blocked by the PA

@BPry 

I am new to phones but I believe we do have a SBC - cisco cube, so I am wondering if the configuration is set way to broad and accepts way too much?

L7 Applicator

Re: Can rapid fire spam phone calls be blocked by the PA

@jdprovine,

I'm not all that fimiliar with Cube, but I would assume that it would have a similar featureset as an Expressway and CUCM whcih would make this possible. 

You might want to verify that whoever setup your equipment has SIP UDP disabled so that toll fraud isn't chewing into your licenses. Look into whether or not Cube can do a CPL rule. 

L4 Transporter

Re: Can rapid fire spam phone calls be blocked by the PA

@BPry 

I am totally new to Cube and phones in general,LOL I don't even know what expressway is. thanks for the suggestions I will check into it, 

L4 Transporter

Re: Can rapid fire spam phone calls be blocked by the PA

It's 5 years since I have managed a Cisco UCM, but your definatly going to have more success there than tryign anythig on the PA.

 

But if your on a SIP trunk, then speak to your phone system provider.

 

Rob

L4 Transporter

Re: Can rapid fire spam phone calls be blocked by the PA

@RobinClayton 

And yes we are on a SIP trunk. When you say phone system provider do you mean cisco or the ISP that provides for our external lines?

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