Secure Sockets Layer/Transport Layer Security

Secure Sockets Layer (SSL) is an application layer protocol. If you are using a modern browser in a secure mode, the connection between your browser and the web server is secured by SSL. The more secure version of SSL is Transport Layer Security (TLS). If a website is secured by an SSL certificate, then the HTTPS sign will appear in your URL bar:

The SLL/TLS operation is represented as follows:

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