Sniffing/Protocol problems

From: Omesh Tickoo (
Date: 2002-07-24 17:28:24 UTC


 I have hostap running on two laptops with Linksys WPC11 ver 3 cards. I am fooling around with these boxes with one in AP mode and the other in managed mode. I have following questions:

  1. This problem has to do with sniffing the packets. As suggested in readme.Prism2, when I try to put my card in monitor mode 1, I get an error "Inteface doesnt accept private ioctl....", So I installed the latest ethereal and put the hostap in monitor mode 2 (and 3). There are no errors but ethereal does not show any activity even when the client is comming up and associating with the AP. Sometimes when I put hostap in monitor mode 2 or 3, it ceases to advertise itself as access point and iwconfig shows its AP as 00:00:00:00:00:00. Has anyone else come across such behavior.
  2. How can I see the list of stations currently associated with hostap.
  3. When I replace the STA card with Cisco aironet card and use the airo_cs driver, I see that "iwconfig eth0" does not report an access point (or it reports 44:44:44:44:44:44 for the access point) if the WEP keys dont match with the HostAP running on a nearby laptop.

The behavior is different when I use Linksys cards with hostap_cs in managed mode for the STA. Regardless of whether the WEP keys match or not, the STA reports the HostAP MAC as its access point. Of course, I can ping between the two machines only if the WEP keys are same. Any ideas about which of the two behaviors is correct? The Cisco card with airo_cs or the Linksys card with hostap_cs.

I will appreciate any help possible.


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