[Novalug] Speaking of house cleaning....
Fri Aug 26 15:29:29 EDT 2011
> On 08/24/2011 01:38 AM, Roy Wilson wrote:
>> I need a sniffer for a 2400bps modem line. I've got a proprietary
>> old PC system that connects to a dial-back system so that system can
>> talk to yet a third system (embedded computer) with the PC as the bridge.
> How to make a serial tap:
> Where to get a copy of Linux Serial Sniffer:
If I *could* sniff at a serial port, I'd just drop in a wye branch and plug it into a laptop.
I need to sniff the phone line, and can't interrupt the data stream.
I'm going from an embedded system sending encrypted data to a PC I can't get at the guts of that has a motherboard 2400bps modem to talk to a dialback system.
The far end dialback just sends reqs, the embedded system transmits back patterns of register levels. I need (alright, WANT:)) to know what those registers are sitting at.
The only way I can see to do it is to sniff the phone line itself. I have a banjo I can drop in-line, but short of recording a session I don't see how I can sniff the data itself offhand. I *used* to do it for 300-1200bps lines fairly frequently, but I wasn't using a PC back then.
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