Wireshark-users: Re: [Wireshark-users] DOCSIS rf-to-ethernet tap?

From: Allen Fowler <allen.fowler@xxxxxxxxx>
Date: Thu, 13 Dec 2007 21:41:46 -0800 (PST)
> 
> AFAIK, no.
> 

Hmm...  I would have thought something like that existed.

> And those blackboxes are called eMTAs. 
> 

Thank you :)



> Frank 
> 
> -----Original Message-----
> From: wireshark-users-bounces@xxxxxxxxxxxxx
> [mailto:wireshark-users-bounces@xxxxxxxxxxxxx] On Behalf Of
> Allen
> 
 Fowler
> Sent: Thursday, December 13, 2007 9:47 AM
> To: wireshark-users@xxxxxxxxxxxxx
> Subject: [Wireshark-users] DOCSIS rf-to-ethernet tap?
> 
> Hello,
> 
> Does there exist a reasonably affordable way to sniff traffic from
> the
> 
 coax
> going out of my cable modem?
> 
> I ask, since our VoIP provider has given us (and requires that we
> use)
> 
 a
> combination cablemodem / VoIP to "multi-phoneline" blackbox.
> 
> This means I have no way of troubleshooting / auditing the
> VoIP/SIP
> 
 traffic
> to or from our provider.
> 
> I don't want to troubleshoot RF / layer 0 issues like USD $15K+
> docsis
> 
 RF
> analyzers can.  I just need to dump any valid docsis frames to
> an
> 
 Ethernet
> port.
> 
> Any ideas?
> 
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