Introduction:- “SecureConnection Failed” Error when logging Wireless LAN controller using Firefox
Description:- Following error message has been received while browsing into different Wireless LAN controllers.
Secure Connection Failed
An error occurred during a connection to 192.168.1.2. You havereceived an invalid certificate. Please contact the server administrator or e-mail correspondent and give them thefollowing information:
Your certificate contains the same serial number as another certificate issued by the certificate authority. Please get a new certificate containing a unique serial number.
(Error code: sec_error_reused_issuer_and_serial)
The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
* Please contact the web site owners to inform them of this problem
This is a certificate conflict message. Actually firefoxcollects certificates and compare all incoming certificates. If thesecertificates match but come from different sources Firefox throws the certificateconflict message like “Secure Connection Failed”.
Most of the time, controller are installed with the samecertificate during production. So when for the first time when you will accessthe controller, the browser will install this certificate in local certificatelist. In case you access any other controller which have the same certificateinstalled but the source is different, there will be a conflict. It has beennoticed that this issue comes only with Firefox and not with IE. The factory installed certificate on the WLC canbe find at MANAGEMENT-->HTTP-->CURRENT CERTIFICATE.
Fixing this issue is pretty simple. After you configure your WLC with an IP address, go to MANAGEMENT-->HTTP and click on regenerate certificate. Once we regenerate the certificate, it will generate a unique certificate with latest validity date. Then reboot the controller for the certificate to take effect. Below is an example of regenerated certificate.
Relevant bug: There is a Bug filed related to this issue and has been fixed.
Other Reference Information about Wireless LAN Controller:-