On 09/16/2010 11:08 AM, José Queiroz wrote:
Sometimes, a problem with the wireless adapter may cause NM to fail
connection. When the connection fails repeatedly, NM opens a window
asking you to retype the password, even though it is correct.
Confirm that you are using the best driver for your device.
The Ubuntu and Fedora and Mac laptops work perfectly with every other
WPA2 AP. Notice this is multiple laptops, running different OSes and
different linux distros. Only Windows laptops work with the problem
AP. All those other APs (including another Linksys) were configured
using the Web interface, which is why I'm suspecting the setup CD sets
up something Windows only. I've posted the log file from NM to the
Fedora chat, and they agree that the error is truly an invalid
passphrase. (I'll post here as soon as I get access to the laptop in
question again.)
My current paranoid theory is that the M$ setup CD configures the WPA2
with a binary key, derived from the passphrase by a proprietary password
hash that only Windows uses. In several days of googling this problem,
I've seen several claims that M$ has 2 password hashes that it tries
with WPA2 (thus enabling Windows to also work with standard APs). M$
had an excuse for that with WEP, since it hadn't been standardized yet,
but not with WPA2.
*If* that paranoid theory is correct, then surely someone has deciphered
the M$ hash, and I can run a program to derive the binary key. Then the
question is, how to make NM use a binary key instead of a passphrase.
<politics>You may ask, "Why not just factory reset the AP and setup with
the same passphrase using the web interface?" Well, I would like to do
that, but currently, the owner is convinced that this behaviour is proof
that Windows is the only serious OS. If the 2 hash theory is confirmed,
I'll add it to my list of M$ sins.</politics>
2010/9/15 Stuart Gathman <[email protected] <mailto:[email protected]>>
A wrt54g2 wireless lan has a WPA2 Personal password that works
with Windows machines, but does not work with Ubuntu, Fedora 12,
or Mac. EAPOL packets are received (shown by tcpdump) while
attempting to connect from Fedora. So far, the only advice I've
managed to get is "use the right password". It is the right
password for Windows, but I'm not sure how to find the right
password for other operating systems.
Does Windows still have a proprietary password hash for WPA2? What
other things could be causing this? The user ran the included
setup CD, which I believe implements WPS, from Windows. Could
this be related? I'm guessing that resetting to factory defaults
and setting up via the web interface will fix things.
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