Foundation of SSL

In this section, we will learn the basics of SSL from the point of view of the end user, focusing on what users should know about SSL for the purpose of safe browsing. Having an SSL certificate stamp on your website is very important for security. In order to protect data from attackers, SSL technology is used to create an encrypted connection between an end user (typically a web browser) and the web server. SSL allows sensitive information such as credit card numbers, social security numbers, and login credentials to be transmitted securely in an encrypted format. Even if an attacker is able to intercept all of the data sent between a client and a web server, they still cannot read and use the information in encrypted data. 

To understand where SSL fits into a TCP/IP or OSI model, let's take a look at the following diagram. For secure applications such as HTTPs, SSL/TLS comes in between the application and the Layer 4 transport layer:

How do I know that SSL is working?

Before...