Step one: Copy your certificate to file

You will receive an email from Networking4all with the certificate in the email (yourdomainname.crt). When viewed in a text editor, your certificate will look something like:

-----BEGIN CERTIFICATE-----
MIAGCSqGSIb3DQEHAqCAMIACAQExADALBgkqhkiG9w0BBwGggDCCAmowggHXAhAF
UbM77e50M63v1Z2A/5O5MA0GCSqGSIb3DQEOBAUAMF8xCzAJBgNVBAYTAlVTMSAw
(.......)
E+cFEpf0WForA+eRP6XraWw8rTN8102zGrcJgg4P6XVS4l39+l5aCEGGbauLP5W6
K99c42ku3QrlX2+KeDi+xBG2cEIsdSiXeQS/16S36ITclu4AADEAAAAAAAAA
-----END CERTIFICATE----- 

Copy your Certificate into the directory that you will be using to hold your certificates. In this example we will use /etc/ssl/crt/. Both the public and private key files will already be in this directory. The private key used in the example will be labeled private.key and the public key will be yourdomainname.crt.
It is recommended that you make the directory that contains the private key file only readable by root.

Step two: Install the Intermediate Certificate

This is the certificate that starts Networking4all. You will need to install the Networking4all intermediate certificate in order for browsers to trust your certificate. The Networking4all intermediate certificate is attached to your email. In the Virtual Host settings for your site, in the httpd.conf file, you will need to complete the following:

1. Copy the Networking4all intermediate to the same directory as httpd.conf and name it ca.txt
2. Add the following line to the SSL section of the httpd.conf (assuming /etc/httpd/conf is the directory to where you have copied the Networking4all intermediate file)

If the line already exists amend it to read the following:
SSLCACertificateFile /etc/httpd/conf/ca.txt

If you are using a different location and certificate file names you will need to change the path and filename to reflect the path and file name that you are using. The SSL section of the updated httpd config file should now read similar to this example (depending on the file name and directories used):

SSLCertificateFile /etc/ssl/crt/yourdomainname.crt

SSLCertificateKeyFile /etc/ssl/crt/private.key

SSLCACertificateFile /etc/httpd/conf/ca.txt

Save your httpd.conf file and restart Apache.