Before starting, why should you use a certificate ? TLS/SSL certificates secure internet connections by encrypting your data. They ensure that data is transmitted privately, without modifications, loss or theft. By adding a certificate on your WLC, you will insure a safer internet experience to your users.

Moreover, some browsers might block authentication on HTTP pages. Using a certificate will permit an access to HTTPS pages and your users will be able to authenticate.

Now, we can see how to add a certificate on your Cisco WLC.

First, you have to configure a TFTP server. (You can download a free TFTP Server by following this link :

Add the certificate in your TFTP-Root directory. This directory have to be the storage of the TFTP server.

Then, on your WLC, go to Security > Web Auth > Certificate.

Click on « Download SSL Certificate ».

Set your TFTP server’s IP address, certificate file name (don’t forget the filename extension « .pem ») and certificate password.

(Your certificate has to be as described in this link :

(If you encounter some problems installing your certificate, you can follow this link :

You can press « Apply », the certificate is downloaded on the controller.

Once the transfer completed successfully, go to Controller > Interfaces.

Select your virtual interface. Change the IP Address to « » and the DNS Host Name to « ».

Now, you have to reboot your controller. The new certificate takes effect after that.

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