How to install a SSL Certificate for Red Hat

Copy the Intermediate CA certificate from your Secure128 portal under “Order Details”.
Be sure there are 5 dashes to either side of the BEGIN CERTIFICATE and END CERTIFICATE and that no white spaces, extra line breaks or additional characters have been inadvertently added.
Save the Intermediate CA Certificate as: /etc/httpd/conf/ssl.crt/intermediate.crt.
Add the following directive to your /etc/httpd/conf/httpd.conf file, within the virtual host tags that define your secure Web server and with the other SSL directives:

SSLCACertificateFile /etc/httpd/conf/ssl.crt/intermediate.crt

The SSL certificate will be sent by email. The certificate is included as an attachment (Cert.cer) and it is also imbedded in the body of the email. Copy the certificate.
The text file should look like this:

-----BEGIN CERTIFICATE----- [encoded data] -----END CERTIFICATE-----

To follow the naming convention for Red Hat, rename the certificate filename with the .crt extension. For example: public.crt
Save the certificate into a file and give the name and path to that file to the SSLCertificateFile directive: SSLCertificateFile /etc/httpd/conf/ssl.crt/server.crt
You need to add also the key file in as well (SSLCertificateKeyFile directive): SSLCertificateKeyFile /etc/httpd/conf/ssl.key/server.key
Remember to add the Intermediate file in as well ( SSLCACertificateFile directive) from Step 1: SSLCACertificateFile /etc/httpd/conf/ssl.crt/intermediate.crt