Re: Protecting the CME from inboud voip calls

This is almost always SIP traffic. Block UDP and TCP port 5060 on your
internet port and you won't have problems. While you're at it you should
block TCP 1720 (H.323) as well, although it's a much less used toll fraud
mechanism. They changed this behavior in 15.1(2)T where you won't accept
incoming calls unless they are on a outgoing dial peer.

-nick

On Thu, Mar 24, 2011 at 4:47 PM, Adel Abushaev <adel_at_netmasterclass.net>wrote:

> If u still want to have traffic (for what?) but block it in dialplan, why
> don't u just configure corlists?
>
> -----Original Message-----
> From: Amin
> Sent: Thursday, March 24, 2011 20:11
> To: 'George Goglidze'
> Cc: ccielab_at_groupstudy.com
> Subject: RE: Protecting the CME from inboud voip calls
>
> My CME is using FXO ports, i.e. I don't have DID, I am using PLAR, can't I
> configure a dial-peer voice 20 voip using the incoming called-number .T,
> then block the call.
>
>
>
>
>
> From: George Goglidze [mailto:goglidze_at_gmail.com]
> Sent: Thursday, March 24, 2011 9:40 AM
> To: Amin
> Cc: ccielab_at_groupstudy.com
> Subject: Re: Protecting the CME from inboud voip calls
>
>
>
> Hi,
>
>
>
> You can use access-list for that purpose... and allow connections only from
> known hosts...
>
>
>
> Regards,
>
> On Fri, Mar 25, 2011 at 1:30 AM, Amin <amin_at_axizo.com> wrote:
>
> Hi experts,
>
>
>
> How I can protect my CME from someone configuring a VOIP dial-peer pointing
> to my CME real IP, then my CME match inbound dial-peer 0 and route it using
> one of my outgoing dial-peer??
>
>
>
> Regards,
>
> Amin
>
>
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Received on Thu Mar 24 2011 - 18:12:35 ART