How-To / Tutorials - Apache HTTP Server Version 2.4

Apache HTTP Server Version 2.4

Apache > HTTP Server > Documentation > Version 2.4

# How-To / Tutorials

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## How-To / Tutorials

Authentication and Authorization

  Authentication is any process by which you verify that someone is who they claim they are. Authorization is any process by which someone is allowed to be where they want to go, or to have information that they want to have.

  See: Authentication, Authorization

Access Control

  Access control refers to the process of restricting, or granting access to a resource based on arbitrary criteria. There are a variety of different ways that this can be accomplished.

  See: Access Control

Dynamic Content with CGI

  The CGI (Common Gateway Interface) defines a way for a web server to interact with external content-generating programs, which are often referred to as CGI programs or CGI scripts. It is a simple way to put dynamic content on your web site. This document will be an introduction to setting up CGI on your Apache web server, and getting started writing CGI programs.

  See: CGI: Dynamic Content

`.htaccess` files

  `.htaccess` files provide a way to make configuration changes on a per-directory basis. A file, containing one or more configuration directives, is placed in a particular document directory, and the directives apply to that directory, and all subdirectories thereof.

  See: `.htaccess` files

HTTP/2 with httpd

  HTTP/2 is the evolution of the world's most successful application layer protocol, HTTP. It focuses on making more efficient use of network resources without changing the semantics of HTTP. This guide explains how HTTP/2 is implemented in httpd, showing basic configurations tips and best practices.

  See: HTTP/2 guide

Introduction to Server Side Includes

  SSI (Server Side Includes) are directives that are placed in HTML pages, and evaluated on the server while the pages are being served. They let you add dynamically generated content to an existing HTML page, without having to serve the entire page via a CGI program, or other dynamic technology.

  See: Server Side Includes (SSI)

Per-user web directories

  On systems with multiple users, each user can be permitted to have a web site in their home directory using the `UserDir` directive. Visitors to a URL `http://example.com/~username/` will get content out of the home directory of the user "`username`", out of the subdirectory specified by the `UserDir` directive.

  See: User web directories (`public_html`)

Reverse Proxy guide

  Apache httpd has extensive capabilities as a reverse proxy server using the `ProxyPass` directive as well as `BalancerMember` to create sophisticated reverse proxying implementations which provide for high-availability, load balancing and failover, cloud-based clustering and dynamic on-the-fly reconfiguration.

  See: Reverse proxy guide

Rewriting URLs with mod_rewrite

  Rewriting URLs with (and without) `mod_rewrite` tends to be one of the most frequently asked topics on our mailing lists and IRC channels. We have devoted and entire section of our documentation to howtos and recipes around this topic.

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