problem with 4 way handshake over wired driver

Javi Bustamante webo_ at
Wed Dec 7 12:45:34 EST 2005

Thanks for your quick answer Jouni,

I know that the 4 way handshake is not used over wired autentication, but as 
a part of a research proyect I am interested on doing it.
As you say it is not possible to do it directly with wpa_supplicant and 
hostapd, but ¿Would it be any possibility to force it changing the source 
code? ¿Is this possibility obvius or would it implied lots of modifications? 
¿which part of the code is in charge of this?

Again, thanks is advance,


>From: Jouni Malinen <jkmaline at>
>To: hostap at
>Subject: Re: problem with 4 way handshake over wired driver
>Date: Wed, 7 Dec 2005 08:31:01 -0800
>On Wed, Dec 07, 2005 at 09:25:56AM +0000, Javi Bustamante wrote:
> > I'm trying to perform WPA authentication over a wired ethernet using
> > wpa_supplicant, hostapd and freeradius.
> > I'm using the EAP-TLS method. The EAP authentication goes ok, the
> > wpa_supplicant receives a EAP-SUCCESS message. The authenticator 
> > the MS-MPPE-Send-Key and MS-MPPE-Recv-Key from the radius, but the 
> > is that the 4 way handshake doesn't start. ?Why does not the 4 way
> > handshake start?
>Because 4-Way Handshake is not used over wired networks.. It is only for
>IEEE 802.11.
> > I have read that it is possible to integrate xsupplicant with
> > wpa_supplicant using the -e option with the wpa_supplicant, but I can't
> > find the -e option in the latest version (wpa_supplicant-0.4.7)
>This was removed quite some time ago since no one seemed to be using
>that option anymore. wpa_supplicant includes all the needed
>functionality for IEEE 802.1X/EAP authentication so no external program
>is needed for that.
> > hostapd (ineteresting part):
> > driver=wired
> > wpa=2
> > wpa_key_mgmt=WPA-EAP
>These wpa options are not used for driver=wired.
> > eapol_version=1
> > ap_scan=0
> > network={
> >        proto=RSN
> >        key_mgmt=WPA-EAP
> >        pairwise=CCMP TKIP
> >        group=CCMP TKIP
>These WPA options are not used when using -Dwired.
>Jouni Malinen                                            PGP id EFC895FA
>HostAP mailing list
>HostAP at

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