To install the AlphaSSL Root Certificates, perform the following steps:
Copy the intermediate CA certificate into each BIG-IP Controller in a redundant system.
Cut and paste the entire text of the certificate, including the -----BEGIN CERTIFICATE----- and -----END CERTIFICATE----- lines, into a file named intermediate-ca.crt. Be careful not to include any leading or trailing whitespace before the beginning and ending hyphens.
Place the intermediate-ca.crt file in the directory /config/bigconfig/ssl.crt/
Note: The ssl.crt directory is used to store certificates and certificate authorities.