Server certificates take
advantage of TLS to work seamlessly between your web site and your
visitors' web browsers. This is how the process works:
||A customer contacts your site, accessing a secured URL
(indicated by a URL that begins with "https:" instead of just
"http:" or by a message from the browser). When a web-connection
uses SSL, it connects to port 443 instead of port 80. This causes
the prefix of a web address to start with HTTPS (443) instead of
||Your web server responds, automatically sending the customer
your site's digital certificate, which authenticates your
||Your customer's web browser generates a unique "session key" to
encrypt all communications with the web site.
||The user's browser encrypts the session key itself with the
site's public key so only the site can read the session key.
||A secure session is now established. It all takes only seconds
and requires no action by the user. Depending on the browser, the
user may see a key icon becoming whole or a padlock closing,
indicating that the session is secure. If your site doesn't have a
digital certificate, visitors will see a warning message when they
attempt to offer credit card or personal information.
Certificate is Domain/Web Site specific
Help with Certificates