Certificate Installation: Cisco WLAN 4400
Procedure for Uploading Chained Certificates to the Cisco WLAN 4400:
When you receive the .zip file from Comodo it will contain the following files "The Entity (domain certificate), The Root, and The Intermediate Certificates". You will need to combine them into one .pem file.
To accomplish the task of changing the .crt file to a .pem file you will need to do the following:
1.Open each .crt file in a text editor (notepad, wordpad, etc.)
2.Open an additional blank text editor page
3.Copy the contents of each .crt file in this order and paste it into the blank text editor
*Intermediate CA cert *
*Root CA cert *
4.Once the files are in order you can now save the file as "yourdomain.pem".
In order to determine which chain of trust you have, please click on the article below:
To obtain a copy of OpenSSL for:
Next, combine this file (yourdomain.pem) with the private key that you generated along with the CSR, the private key of the device certificate, which is mykey.pem in this example. Combine the "yourdomain.pem" certificate with the private key, and then convert the file to a .pem file. This final
certificate is called as "final.pem".
Issue these commands in the OpenSSL application to achieve this:
openssl>pkcs12 −export −in yourdomain.pem −inkey mykey.pem −out yourdomain.p12 −clcertsopenssl>pkcs12 −in yourdomain.p12 −out final−cert.pem −passin pass:check123 −passout