what radius server do you use?
We had a similar issue with freeradius serever using Novell NDSldap 
authetication.
The current freeradius server has this issue fixed.
johnh...
________________________________
From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[[email protected]] on behalf of Jack Vizelter 
[[email protected]]
Sent: Monday, November 07, 2011 5:42 PM
To: [email protected]
Subject: Re: [WIRELESS-LAN] WPA2-Enterprise - account lockouts and password 
changes

We use WPA2 Enterprise on our wireless network and we've seen OSX connectivity 
issues to our wireless network that authenticates against our LDAP/AD when 
using WPA2 Ent.

When a user authenticates the first time and saves the password in the wifi 
profile and keychain and then changes their LDAP/AD password, the wireless 
profile does not always prompt to enter a new password.  This causes the 
wireless not to connect.  And when it does, the airport has multiple wifi 
profiles for the same SSID causing issues.

What we've found that works (at least thus far) is to both delete duplicate 
wireless profiles and delete the keychain password.  Then update manually the 
password only for the remaining wireless profile with the new password.

Unfortunately, we require password changes annually.

We do enforce LDAP & AD password lockouts after several failed attempts, but 
they auto-unlock themselves after a fixed period.

-jack


On Nov 7, 2011, at 5:19 PM, Fleming, Tony wrote:

Crew,
We have had several complaints from our students about wireless trouble. We 
believe we have a couple issues going on:
                Account lockouts – Our students are allowed to register four 
devices on WiFi and the majority of our students using all of their 
registrations ( laptops/ipads/smartphones…) What we see are a lot of password 
failures resulting in account lockouts. If one of their four devices has a bad 
username and password combination stored in the WiFi profile, it just compounds 
the problem and creates a lot of confusion for our students. Sadly, these 
devices do not return a failure cause to the user and is interpreted as a bad 
signal or bad network.
                OSX and WPA2 – It is our observation that OSX has a continual 
history of WPA2 bugs.

My questions to the group:
How do you guys handle Account lockouts?
Do your students interpret these issues as WiFi trouble?
If so, how are you changing that perception?
Have any of you abandoned 802.1x (PEAP) because of this issue?
                Do you see the same trouble with OSX and WPA2?
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