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Many web sites have both secured and unsecured areas. The secured areas might provide access to a financial bank account or a database of personal information This secured area of the web site usually requires authentication to proceed further. To increase security when switching from the unsecured public part of a web site to a secured area, SSL encryption is invoked. SSL must be supported by both the web server and the client browser to function. In an SSL communication a process known as a digital handshake occurs. The handshaking phase begins when the server sends a message to the client indicating a secure session must be set up. The client then sends its security information and encryption key to the server, which compares the credentials with its own to find the right match. Next, the server sends authentication information, so the client knows the web server they’re communicating with is the correct one. This is important because it Possible, through redirection or other methods, not to be on the web site where you originally thought you were. If you enter your user name and password, you might be entering the information into a bogus web site that collects this information to perform unauthorized activity with your accounts. This handshake confirms not only are you who you say you are, but the site you’re contacting is what you think it is. then this handshaking is complete, the client and server then establish encrypted communications throughout the duration of the session. When the client moves to another web site, the encrypted session is closed. Transport Layer Security (TLS) is the next generation of the SSL protocol. TLS builds on the strong security of SSL with more enhanced encryption and authentication techniques. Unfortunately TLS and SSL aren’t compatible because a TLS communication can’t interoperate with an SSL communication. Either way if you are going to be selling products on your website you must make sure your web hosting offers SSL.

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