Re: usb-Atmel - Ad0-Hoc - ZyAIR B-200 - Wifi Link OK, TCP/IP Link dead

Hi Joerg,

just saw your second posting - you've got it working, kind of.
Some remarks left:

> > What are "virtual" network devices?
>
> OK - Virtual Network Devices. I call always Virtual Network Device a device
> that is used to attach an existing network Device on the computer. In this
> case - the wlan-devices you see through iwconfig are the real ones - while
> the wlan-device you see through ifconfig is the virtual one - virtually
> attached to the wireless device in my point of view :)
> (e.g. I have worked with so many Intranet based stuff that I start developing
> my own vocabulary. b.e. if you use a /32 Network to connect 2 sites together,
> I call this Network the "Transit" subnet etc.)... be gentle ;) I might become
> too old for this stuff *lol*

IMHO they are "real" network devices - they've simply got a physical
layer different to wired Ethernet. Different collision avoidance,
packaging etc., but they still are 802.xx devices.

> Is there something like a packet-Sniffer that tells me what is going on on the
> W-Lan - Wireless part ?

yes. I use a Prism2 PCMCIA card with wlan-ng in monitor mode for testing
(Prism2 USB devices should work as well) and ethereal >= 0.9.9 .
Just call
	./sniff.sh wlan0 12
	ifconfig wlan0 up
	ethereal -i wlan0
with sniff.sh as

#!/bin/bash
# file: sniff.sh
echo "setting dev $1 to sniff on channel $2"
wlanctl-ng $1 lnxreq_wlansniff enable=true channel=$2 \
  prismheader=true wlanheader=true keepwepflags=true stripfcs=false

This will show you all WLAN traffic on channel 12.

The only problem here is to decrypt WEP in the trace (I'm using ancient
sta fw 0.8.3 which needs WEP support in the driver).

/Jörg