Security
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The SSL protocol provides communications privacy, authentication, and message integrity by using a combination of public-key and symmetric encryption. By using this protocol, clients and servers can communicate in a way that prevents eavesdropping, tampering, or message forgery.
In the case of an SSL connection between a Web browser and Web server, you must enter HTTPS rather than HTTP as the protocol type in the URL. This will instruct the Web browser to use a different port for the communication; the Web server will be listening on this port for SSL requests. By default, Web data (HTTP) uses Transmission Control Protocol (TCP) port 80, while SSL (HTTPS) uses TCP port 443.