I got switch setup and the voip traffic now is being monitored by another NIC in ntop server. But how can I see the call flow? caller and callee id? I remember ntop has ability to see that. But I can't find anything related in the settings. Do I need nProbe for this purpose?
Thanks. Lou On Mon, Jul 19, 2010 at 12:02 PM, Hailu Meng <[email protected]> wrote: > Thanks Gary for the detail. We don't use netflow but I see your point here. > For packet filter, you can simply specify RTP to filter the traffic, right? > > Besides monitoring the traffic, if I want to decode the signaling traffic > to know who is calling who, is ntop able to do that as you know? Since > wireshark can show this information based on the skinny traffic, I guess > that should not be hard for ntop. > > Thanks. > > Lou > > On Mon, Jul 19, 2010 at 11:49 AM, Gary Gatten <[email protected]> wrote: > >> I thought one could configure a range of ports for use by the phones? >> >> >> >> Also, if you have Ci$co gear you can probably setup multiple export >> statements: one that exports only VoIP/IPT traffic, and one that exports >> everything else. Sorry, assuming you’re using netflow. You can also >> accomplish the same thing with packet filters in ntop and as Thomas pointed >> out, SPAN only the Voice VLAN to one NIC in ntop and perhaps all other >> traffic to another NIC – if you desire. >> >> >> >> There are likely several methods that would work for you. >> >> >> >> G >> >> >> >> >> ------------------------------ >> >> *From:* [email protected] [mailto: >> [email protected]] *On Behalf Of *Thomas Mullins >> *Sent:* Monday, July 19, 2010 11:32 AM >> *To:* [email protected]; [email protected] >> *Subject:* Re: [Ntop] How to monitor VoIP traffic >> >> >> >> One thought would be to have all your Voice equipment in a dedicated Voice >> VLAN. Then you could just monitor that VLAN. That is how we are going to >> monitor our Voice traffic. >> >> >> >> Shane >> >> >> >> >> ------------------------------ >> >> *From:* [email protected] [mailto: >> [email protected]] *On Behalf Of *Hailu Meng >> *Sent:* Monday, July 19, 2010 12:18 PM >> *To:* [email protected] >> *Subject:* [Ntop] How to monitor VoIP traffic >> >> >> >> Hi All, >> >> I installed Pre3.4 version and want to define some interested traffic flow >> which can be shown in ntop. One is RTP VoIP traffic among our cisco phone >> system. Since the RTP traffic port is dynamic, it can't be defined in my >> protocol list. Is there anyway I can setup ntop to show RTP traffic besides >> the cisco skinny traffic? >> >> Thanks!!! >> >> Lou >> "This email is intended to be reviewed by only the intended recipient >> and may contain information that is privileged and/or confidential. If you >> are not the intended recipient, you are hereby notified that any review, >> use, dissemination, disclosure or copying of this email and its attachments, >> if any, is strictly prohibited. If you have received this email in error, >> please immediately notify the sender by return email and delete this email >> from your system." >> >> _______________________________________________ >> Ntop mailing list >> [email protected] >> http://listgateway.unipi.it/mailman/listinfo/ntop >> >> >
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