Re: [Bluez-users] hcidump supports real raw packets ??

Re: [Bluez-users] hcidump supports real raw packets ??

[Marcel Holtmann]

Hi Emmanuel,

> Apologize my expression, but I wanted to say capture packets on the air  and 
> therefore display the HCI layer and upper layers of these with hcidump.

for capturing air packets you need a air sniffer aka protocol analyser
and there are no HCI packets on the air.

Regards

Marcel




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Re: [Bluez-users] hcidump supports real raw packets ??

[Marcel Holtmann]

Hi Emmanuel,

> thanks for your help, but I'd like know what do I need for 
> capture hci packets in real time from the air (no capture local packets) 
> with hcidump?

read and understand the Bluetooth specification first, because there are
no HCI packets on the air.

Regards

Marcel




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[Bluez-users] hcidump supports real raw packets ??

[Emmanuel Mendoza]

Hi, I'm using Bluez for programming a hcidump based sniffer, but I'm confused
about the captured packets. Do packets have ACCESS_CODE + HEADER + BODY format??
Can or would can hcidump has this support??. I probe this feature using -R
command, but the packets has a different format.

Also I'd like to know if someone knows a Bluetooth Adaptor USB's firmware that
support the monitor mode to achieve real sniff. I know that hcidump only sniff
the local connections. If some firmware supports the monitor mode, would hcidump
work fine in this case?

Thanks, I'd be grateful for your help.



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Re: [Bluez-users] hcidump supports real raw packets ??

[Marcel Holtmann]

Hi Emmanuel,

> I'm using Bluez for programming a hcidump based sniffer, but I'm confused
> about the captured packets. Do packets have ACCESS_CODE + HEADER + BODY format??
> Can or would can hcidump has this support??. I probe this feature using -R
> command, but the packets has a different format.

the tool is called hcidump and can only sniff HCI and upper layers. No
radio, baseband or link manager sniffing.

> Also I'd like to know if someone knows a Bluetooth Adaptor USB's firmware that
> support the monitor mode to achieve real sniff. I know that hcidump only sniff
> the local connections. If some firmware supports the monitor mode, would hcidump
> work fine in this case?

There is nothing like a monitor mode. For this kind of sniffing you need
a protocol analyzer. Look at www.catc.com or www.fte.com.

Regards

Marcel




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