[Asterisk-Users] Network Sniffing Calls for recording

[Petr Grussmann]

I try sniffing over asterisk but call must over asterisk and working goot

Sniffing network for voip call is very expensive and not working if call 
is under ipsec packet

Any Czech firm working on this black box for voip sniffing and working 
on h323 or sip


working on switche witn management and witch snif port forwarding
I think that is easy for snif packet you use snort and save rtp packet 
but next realize decoding to wav -) this is not easy.



Leo Ann Boon wrote:

> I only know of 2 such systems. 1 from Nice and the other from Eyretel 
> (now part of Witness). The Nice solution has a option to sniff on a 
> network hub, while the Eyretel requires a span port on a Cisco switch.
>
> The way these systems work is quite straightforward. When a call is 
> connected, the IP PBX sends the endpoints to be recorded to the 
> recorder. The recorder just captures all the RTP packets originating 
> from the end points. The scheme is easy to implement in a hub 
> environment. In a switched environment, things are more complicated; 
> that's where the span port comes in.
>
> To use the span port, the network admin must manually configure the 
> switch to copy packets to/from the target ports to the span port. I 
> suspect the span port might get saturated very easily. Forwarding 2 
> ports produces a maximum bandwidth of 200Mbps to be copied into the 
> 100Mbps span port, add another few more ports and it'll skyrocket. 
> Guess you'll need more switches to support large scale recording.
>
> I was toying with the idea of using arp-spoofing, man-in-the-middle 
> attack, to build a sniffing recorder. But, it will have a similar 
> saturation problem like the span port method.
>
> Just my $0.02.
>
>
> lists wrote:
>
>> True * answer are there but what about non * network sniffering call
>> monitoring. Does anyone have info on a good one.  I am also searching
>> voip-info again but so far my key words are hitting on * solutions only
>>
>> -----Original Message-----
>> From: asterisk-users-admin at lists.digium.com
>> [mailto:asterisk-users-admin at lists.digium.com] On Behalf Of C. Johnson
>> Sent: Monday, June 07, 2004 5:20 PM
>> To: asterisk-users at lists.digium.com
>> Subject: RE: [Asterisk-Users] Network Sniffing Calls for recording
>>
>>
>> It's in the Bible...
>>
>> http://www.voip-info.org/tiki-index.php
>>
>> Still, I'd be interested to find a solution for recording via 
>> sniffing over
>> the net. My solution was to have my asterisk pbx's monitor directory 
>> connect
>> to my "recording server" via a nfs mount, but that's a raggedy ann 
>> way of
>> doing it.
>>
>> -----Original Message-----
>> From: asterisk-users-admin at lists.digium.com
>> [mailto:asterisk-users-admin at lists.digium.com] On Behalf Of hank smith
>> Sent: Monday, June 07, 2004 6:10 PM
>> To: asterisk-users at lists.digium.com
>> Subject: Re: [Asterisk-Users] Network Sniffing Calls for recording
>>
>> how can you record calls with asterisk?
>> I didn't even know this was possible
>> can some one point me to a url for info on this?
>> ----- Original Message -----
>> From: "lists" <lists at efastfunding.com>
>> To: <asterisk-users at lists.digium.com>
>> Sent: Monday, June 07, 2004 1:30 PM
>> Subject: [Asterisk-Users] Network Sniffing Calls for recording
>>
>>
>>  
>>
>>> Ok assuming I don't want to record calls using * but instead want a
>>> dedicated server that listens to a mirror port and records calls. Is 
>>> there
>>>   
>>
>> a
>>  
>>
>>> cheap software package out there for doing this for mgcp/sccp?  I know
>>> if evern cut over to * there is a way but I doubt I will even cut 
>>> 100% over
>>>   
>>
>> to
>>  
>>
>>> * so I was wonder what the list has heard of for call recording via
>>>   
>>
>> sniffing
>>  
>>
>>> my gates.  I know there are some out there but $100k for 40 users is
>>> to
>>>   
>>
>> high
>>  
>>
>>> for my blood.
>>>
>>> Offlist is fine for all flames and answers since this is a bit off
>>> topic lists at efastfunding.com
>>>
>>> OK it's a Monday when it takes 5 tries to get a email to the right
>>> list
>>>   
>>
>> from
>>  
>>
>>> the right account.
>>>
>>> Either that or someone switched the coffee pot to decaf again.
>>>
>>>
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>>
>>
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>>  
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