Re: question about WEP encryption with wrong password

["charlyliu" <charlyliu linpus com>]

Hi, 

Thanks Helmut and Dan for your quick response. 

best rgds,

Charly Liu


-----Original message-----
From:Dan Williams <dcbw redhat com>
To:Helmut Schaa <hschaa suse de>
Cc:networkmanager-list gnome org,charlyliu linpus com
Date:Mon, 05 May 2008 12:14:27 -0400
Subject:Re: question about WEP encryption with wrong password

On Mon, 2008-05-05 at 17:34 +0200, Helmut Schaa wrote:
> Hi,
> 
> Am Montag, 5. Mai 2008 11:25:42 schrieb charlyliu:
> > I have a noobie question about WEP encryption. I was trying at my AP the
> > WEP encryption with a worng password and I notice that NM completes the
> > stage 2 and begin the dhcp manager. Then the dhcp doesn't receive any IP
> > because I entered a wrong password. Is it normal that wpa_supplicant
> > completes his states hence NM completes stage 2? I think that it shouldn't
> > have to pass stage 2 because if we have an static IP then we will see that
> > the connection is established, but we're not (can't ping anywhere).
> 
> AFAIK the problem is neither NetworkManager nor wpa_supplicant. Using WEP you 
> won't get any notification that the authentication failed from the AP. 
> Therefore NM cannot do anything useful instead of starting DHCP.

Correct; the only failure indication of static WEP is the inability to
talk to anything.  You can still auth & assoc to the AP (because
management frames are not encrypted), you just can't exchange any
traffic with the WLAN.

Dan