ndisuio dosn't receive packets

Thomas Unterleitner thomas
Sun Mar 9 04:22:10 PDT 2008

The reason why we do not wont to use winpcap is we do not want to install
any addional drivers on our systems - especially a seperated sniffer!

Do you have any idea which windows service is also using incomming EAPOL
Frames? We have stopped already wzcsvc.

2008/3/8, Jouni Malinen <j at w1.fi>:
> On Wed, Mar 05, 2008 at 08:12:28AM +0100, Thomas Unterleitner wrote:
> > The Problem is, that we dosn't receive inside wpa_supplicant the second
> > packet (EAP,Request, Identity [FSC3748]). We sniff the network traffic
> and
> > we see, that the switch send this packet. But wpa_supplicant timed out
> after
> > a while with (Authentication with xx:xx:xx:... timed out.). It looks
> like we
> > can only send EAPOL Start via ndisuio.
> NDISUIO is limited to just a single application using the
> receive-EAPOL-frames functionality. If something else on the system is
> trying to do the same, wpa_supplicant won't be able to use NDISUIO for
> this. However, I would expect this to cause initialization to fail.
> Do you have any particular reason for using NDISUIO or would use of
> WinPcap be suitable for this system? WinPcap provides a more generic
> mechanism for receiving EAPOL frames and does not have this type of
> limitation on how many applications can use it at the same time.
> --
> Jouni Malinen                                            PGP id EFC895FA
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