aboka Posted November 28, 2010 Share Posted November 28, 2010 Hi! I have just started to learn this Airodump in BT4. I can't figure out why it will show some of the hidden AP(with length: 0>) channel's as 32,33,34, etc? As far i know, there are only channel 1 to 13. I also tried hiding my own AP but it will show its correct length and channel. Have anyone encounter this before? Thank you, Quote Link to comment Share on other sites More sharing options...
digininja Posted November 28, 2010 Share Posted November 28, 2010 That is all correct functionality. Sounds like you have a card that does 802.11a as well as g. a is the 5ghz range so goes into higher channels, see this for more info http://en.wikipedia.org/wiki/List_of_WLAN_channels As for hidden ESSIDs, when an ESSID is hidden the name isn't shown in broadcast packets but it is leaked in all management frames so when the sniffer sees management traffic it is able to deduce the ESSID Quote Link to comment Share on other sites More sharing options...
digininja Posted November 28, 2010 Share Posted November 28, 2010 Also, some hide the ESSID by sending spaces in the beacon rather than the name so even without any traffic you can still get the length of the ESSID Quote Link to comment Share on other sites More sharing options...
aboka Posted December 3, 2010 Author Share Posted December 3, 2010 Hi! Thank you for the reply and the link =) Hope you don't mind as i got new question relate to this channel: 1) I did not see Channel 31,32 and 33 in the Wikipedia list, is it the same with 131, 132, 133? 2) Today when i test on my friend's office, i can see 131, 132. Does this mean they have set their AP wrongly(as we are in Asia)? Thank you, Quote Link to comment Share on other sites More sharing options...
digininja Posted December 3, 2010 Share Posted December 3, 2010 1. It could have been 131 etc just being truncated for some reason. 2. Not necessarily wrongly but possibly illegally. Those channels are 802.11a and you just need to check your local laws to see if you are allowed to use them Quote Link to comment Share on other sites More sharing options...
aboka Posted December 3, 2010 Author Share Posted December 3, 2010 My guess is most probably they did not set the region correctly or they just use the wifi out of the box with default value - EUROPE, JAPAN, US, etc. One last question - Why do it sometimes detect a hidden AP with a '-1' channel? Thank you =) Quote Link to comment Share on other sites More sharing options...
digininja Posted December 3, 2010 Share Posted December 3, 2010 probably just a bug somewhere. It will have seen some data that wasn't complete and tried to parse it but failed. Quote Link to comment Share on other sites More sharing options...
aboka Posted December 3, 2010 Author Share Posted December 3, 2010 Thank you very much. Just browse over to your site, very nice and informative. Have bookmark them =) Quote Link to comment Share on other sites More sharing options...
josephwilliem Posted January 20, 2011 Share Posted January 20, 2011 hey guys,,,, How I type ifconfig wlan1 up promisc my card is still off ;( when i type in console airmon-ng working fine but monitor mode is on channel -1. How I can move up my wifi card help! I have Backtrack4R1 :rolleyes: Quote Link to comment Share on other sites More sharing options...
digininja Posted January 20, 2011 Share Posted January 20, 2011 Are you sure you want to put the card in promiscuous mode? I think you really want monitor mode. Quote Link to comment Share on other sites More sharing options...
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