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Table Of Contents  CertiGuide to Network+
 9  Chapter 0101:  TCP/IP
      9  VIII  Services and Applications

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HTTP

HTTP (Hyper Text Transfer Protocol) is used to send data (web pages and user page requests) back and forth for the graphical interface for the Internet using the World Wide Web (WWW). While the standard (non-secure) version of HTTP uses port 80, there are also two secure versions available, known as S-HTTP (Secure-HTTP) or SSL (Secure Sockets Layer).

You’re probably already familiar with one or more HTTP client programs, the most popular of which are Internet Explorer and Netscape. HTTP (or web) server programs include Internet Information Server (IIS) on Microsoft Windows based servers and Apache on other platforms.

HTTP

HTTP uses Port 80 for communications.



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