Set up Apache2 for SSL

For site "foo"

/etc/apache2/sites-enabled/default-ssl

        SSLEngine on
        SSLCertificateFile    /etc/ssl/foo/foo.crt
        SSLCertificateKeyFile /etc/ssl/foo/foo.key
       SSLCertificateChainFile /etc/ssl/foo/intermediate.pem

get the intermediate certificate: https://search.thawte.com/support/ssl-digital-certificates/index?page=content&id=SO1498