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Windows 7: Security Wireless Cisco LEAP

02 Nov 2009   #11

Windows 7
Cisco ACS software

I had this same problem, where I had updated a Dell Latitude E4300 laptop to Windows 7 with Intel AGN 5300 wifi controller. After installing the appropriate Intel software to acquire the 'Cisco: LEAP' authentication type on the wireless profile, I was still unable to connect or authenticate to the Wifi WVLAN.

I started a ticket with Intel as well, and was having intermittent connectivity, though 95% of the time it was failing to authenticate. A few days later we upgraded our Cisco Secure ACS (RADIUS) server from version 3.x to a 4.x platform, and it was immediately resolved.

Hopefully this is helpful information if you've run into the same problems as I have, an upgrade to a more modern version of Cisco Secure ACS might help. It did for me!

My System SpecsSystem Spec
05 Jan 2010   #12
Neil McRae

Windows 7 Ultimate 64bit

anyone come up with a solution to this that doesn't require upgrading ACS? I'm using Windows 7 on a Tablet machine and it would be great to use our corporate wifi but we use Leap and ACS 3.2, chances of getting IT to upgrade to ACS 4 are not looking good.

microsoft get alot of stick about bad software but they don't hold a candle to issues that I've seen with Cisco over the years.
My System SpecsSystem Spec
29 Jan 2010   #13

WinXP / 7

Having tried every Cisco client installer (along with many others) I still haven't been able to get this to work either. The drivers for the card install correctly from the Cisco wizards but the supplicant software won't pull any information from the card. When using the Windows wireless config I am able to select Cisco LEAP as authentication but it won't authenticate.
I have checked my ACS and it says I'm trying to authenticate using PEAP. After some packet tracing I found this to be true(!) even though it states in Windows I am using LEAP. The packet traces have identified that the client will try to authenticate with the Access Point using PEAP which is the backed off to the ACS and fails, however the AP then receives a second request but this time using LEAP - unfortunately this won't relay back to the ACS to authenticate the client.
My System SpecsSystem Spec

29 Jan 2010   #14

Windows 7 Ultimate 64Bit

I have a Lenovo machine and with Thankvantage Access Connection, I am able to setup this LEAP wireless connection. That said i think it's a utility feature rather than a driver, or builtin W7 tool that can get this option.
My System SpecsSystem Spec
07 Apr 2010   #15

Windows 7 Enterprise

Hi all, I had this exact same problem and have found a working solution.

I was unable to connect to LEAP at my workplace. Other colleagues with Windows 7 either had the same issue or intermittent connectivity. All troubleshooting showed an error in authentication.

To fix this change your security settings as follows:

Security Type: WPA-Enterprise
Encryption Type: TKIP

Choose a network authentication method: Microsoft: Protected EAP (PEAP)
I previously tried to use LEAP with no success.

Then under settings: un-check the Validate server certificate

Because my login is not on the same domain as my computer, i had to change the Configuration settings of the EAP MSCHAPv2 properties to not automatically use my windows login name and password.

After doing this I was challenged for a login and password for my wireless connection. After entering <domain/username> and <password> I was able to connect!

At first it was reporting 'No internet Access' with the limited connection icon, but after a day or so it disappeared.

I hope this helps!

My System SpecsSystem Spec

 Security Wireless Cisco LEAP

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