<div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><span class="q"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
> If I use the 'iwlist wlan0 scan' command, does the card firmware perform an
<br>> active scan with probe requests or does it simply perform a passive scan of<br>> the values already obtained from AP beacons?<br><br>This may depend on the firmware and regulatory configuration.. Should be<br>
easy to figure out with a wireless sniffer, though. <br>
</blockquote></span></div></blockquote><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><span class="q"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
> >From the hostap README, I came to know of the 'iwpriv wlan0 host_scan <x>'
<br>> command which performs an active scan. Does this work even in the default<br>> firmware roaming mode?<br><br>Maybe, if you have new enough firmware.</blockquote></span></div></blockquote><div><br>
>From Ethereal, I found out that both 'iwlist scan' and 'iwpriv
host_scan' commands cause the cards to send out probe requests.<br>
</div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div>We are using STA firmware rev 1.7.4 on one card and
1.8.3 on the other and the cards are FCC approved for use in the US.<br></div><span class="q"><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
> Also, is there a way I can restrict the active scan to be performed only in
<br>> one channel at a time? Please let me know.<br><br>iwpriv wlan0 scan_channels <bitmask></blockquote></span></div></blockquote><div><br>
This option was not recognized. I am using hostap 0.3.9, hostap tools 0.3.7, wireless tools 27. <br>
<br>
Also, could someone confirm that hostap uses long preambles in the station mode? <br>
</div></div><br>
Thanks,<br>
Sriram C.<br>