Secure Sockets Layer, or SSL, is a protocol used to encrypt the information exchanged between a web server and its users. The practical application of using an SSL is to preserve the information which visitors submit on your Internet site - a login page, a payment page if you run an Internet store, and so on. Any information they type in in any box on the Internet site will be submitted securely to the server, so their login or payment details will be protected from being accessed by unauthorized people. Normally, an SSL certificate needs a dedicated IP address to be installed, meaning that the overall cost for your presence online shall be bigger. While this may not be an issue for a larger enterprise, it may matter for a non-profit organization or a small online shop which does not generate big earnings if additional money should be spent. That is the reason why we have taken advantage of an extension known as Server Name Indication (SNI) and we have made it possible to use a shared server IP address to set up an SSL certificate.