On Fri, Apr 25, 2003 at 05:33:15PM +0200, Bojan Puskarevic wrote: > I use Bluetooth PCM-CIA card to connect to the network. It is > installed as a Bluetooth Null Modem connected to the PC trought virtual > ComPort. My temptation to read the protocol with Ethereal GUI wasn't > succeed. It can not found the Bluetooth modem.
On what operating system is this? Ethereal uses libpcap on UNIX, and Winpcap on Windows, to open capture devices. libpcap uses the OS's native packet capture mechanism, and WinPcap's device driver uses the NDIS mechanism, to connect to the network device. If the device on which you're trying to capture doesn't provide a network interface, or the OS packet capture mechanism (on UNIX) or NDIS+the WinPcap driver (on Windows) doesn't support capturing on that interface, libpcap/WinPcap can't capture on it, and therefore tcpdump and Ethereal and all the other programs that use libpcap and/or WinPcap can't capture on it. For example, on Windows, if the device uses PPP, the WinPcap driver doesn't support capturing on it.
