them on your certificate most of the time. A self-signed certificate will cause
the browser to display a rather scary-looking (to a nontechnical person)
warning and require the user to acknowledge it before viewing your site. In
addition, when the CA issues the signed certificate, it is guaranteeing the
identity of the organization providing the web pages.
To learn more about certificates and keys, including installation of keys and
certificates you pay for, see http://tldp.org/HOWTO/SSL-Certificates-
HOWTO/index.html.
References
http://news.netcraft.com/archives/web_server_survey.html—A
statistical graph of web server usage by millions of servers, showing that
Apache is by far the most widely used server for Internet sites
https://httpd.apache.org—The Apache HTTP Server Project website,
where you can find extensive documentation and information about
Apache