Apache OpenSSL

Apache v1.X

Download the appropriate intermediate certificate(s). Save it in a text editor such as Notepad as “intermediate.pem”
Copy your SSL certificate from the order fulfillment email or log into your GlobalSign Certificate Center account and download it. Paste it into a text editor. Save as “mydomain.pem.”
Copy “mydomain.crt” and “intermediate.pem” to the directory in which you plan to store your certificates.
Open your “httpd.conf” file with a text editor. Please note that some installations keep the SSL section separately in the “ssl.conf file.” Locate the virtual host section for the site that the SSL certificate will secure.

?Your virtual host section will need to contain the following directives.
SSLCertificateChainFile – This will need to point to the appropriate intermediate root CA certificates.
?SSLCertificateFile – This will need to point to the end entity certificate. This is the certificate you have named “mydomain.crt.”
SSLCertificateKeyFile – This will need to point to the private key file associated with your certificate.
Save the changes to the file and quit the text editor.
Restart Apache.

Apache v2.X

Download the appropriate GlobalSign root certificate and save it in a text editor as “gs_root.pem.” Only the ExtendedSSL certificate uses the GlobalSign root CA R2 certificate.
Download the appropriate intermediate certificate(s) and save it in a text editor as “intermediate.pem”.
Copy your SSL certificate from the order fulfillment e-mail or log into your GlobalSign Certificate Center account and download it. Paste it into a text editor. Save the file as “mydomain.crt.”
Copy “mydomain.crt” and “intermediate.pem” to the directory in which you plan to store your certificates.
Open your “httpd.conf” file with a text editor. Please note that some installations keep the SSL section separately in the “ssl.conf” file. Locate the the virtual host section for the site that the SSL certificate will secure.

?Your virtual host section will need to contain the following directives:
SSLCACertificateFile – This will need to point to the appropriate GlobalSign root CA certificate.
SSLCertificateChainFile – This will need to point to the appropriate intermediate root CA certificates you previously created in Step 1 above.
SSLCertificateFile – This will need to point to the end entity certificate. This is the certificate you have called “mydomain.crt.”
SSLCertificateKeyFile – This will need to point to the private key file associated with your certificate.
Save the changes to the file. Quit the text editor.
Restart Apache.